/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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:30:08,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:30:08,476 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 11:30:08,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:30:08,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:30:08,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:30:08,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:30:08,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:30:08,510 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:30:08,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:30:08,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:30:08,514 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:30:08,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:30:08,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:30:08,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:30:08,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:30:08,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:30:08,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:30:08,516 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:30:08,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:30:08,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:30:08,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:30:08,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:30:08,517 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:30:08,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:30:08,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:08,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:30:08,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:30:08,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:30:08,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:30:08,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:30:08,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:30:08,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:30:08,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:30:08,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:30:08,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:30:08,766 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:30:08,767 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:30:08,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-17 11:30:09,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:30:10,088 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:30:10,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-17 11:30:10,101 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815d47cfd/91b64c18271547aaade5b750250708db/FLAG95c6b8d4a [2023-11-17 11:30:10,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815d47cfd/91b64c18271547aaade5b750250708db [2023-11-17 11:30:10,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:30:10,147 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:30:10,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:10,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:30:10,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:30:10,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b83accc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10, skipping insertion in model container [2023-11-17 11:30:10,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:30:10,320 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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-17 11:30:10,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:10,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:30:10,499 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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-17 11:30:10,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:10,555 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:30:10,555 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:30:10,560 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:30:10,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10 WrapperNode [2023-11-17 11:30:10,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:10,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:10,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:30:10,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:30:10,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,611 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 11:30:10,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:10,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:30:10,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:30:10,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:30:10,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:30:10,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:30:10,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:30:10,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:30:10,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (1/1) ... [2023-11-17 11:30:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:10,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:30:10,679 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 11:30:10,685 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 11:30:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:30:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:30:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:30:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:30:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:30:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:30:10,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:30:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:30:10,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:30:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:30:10,706 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:30:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:30:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:30:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:30:10,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:30:10,707 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 11:30:10,803 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:30:10,805 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:30:10,981 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:30:11,057 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:30:11,058 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:30:11,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:11 BoogieIcfgContainer [2023-11-17 11:30:11,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:30:11,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:30:11,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:30:11,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:30:11,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:30:10" (1/3) ... [2023-11-17 11:30:11,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1639dabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:11, skipping insertion in model container [2023-11-17 11:30:11,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:10" (2/3) ... [2023-11-17 11:30:11,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1639dabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:11, skipping insertion in model container [2023-11-17 11:30:11,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:11" (3/3) ... [2023-11-17 11:30:11,069 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-17 11:30:11,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:30:11,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:30:11,086 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:30:11,143 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:30:11,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 41 transitions, 94 flow [2023-11-17 11:30:11,193 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-11-17 11:30:11,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:11,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-17 11:30:11,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 41 transitions, 94 flow [2023-11-17 11:30:11,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2023-11-17 11:30:11,201 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:30:11,210 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 35 transitions, 79 flow [2023-11-17 11:30:11,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 35 transitions, 79 flow [2023-11-17 11:30:11,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 35 transitions, 79 flow [2023-11-17 11:30:11,223 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-11-17 11:30:11,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:11,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 0/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:30:11,224 INFO L119 LiptonReduction]: Number of co-enabled transitions 714 [2023-11-17 11:30:11,651 INFO L134 LiptonReduction]: Checked pairs total: 981 [2023-11-17 11:30:11,651 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-11-17 11:30:11,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:30:11,674 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;@19094246, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:30:11,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:30:11,680 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:30:11,680 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:30:11,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:11,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:11,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:11,681 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 11:30:11,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:11,685 INFO L85 PathProgramCache]: Analyzing trace with hash -433816450, now seen corresponding path program 1 times [2023-11-17 11:30:11,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:11,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354265143] [2023-11-17 11:30:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:11,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:12,073 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 11:30:12,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:12,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354265143] [2023-11-17 11:30:12,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354265143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:12,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:12,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:30:12,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690441177] [2023-11-17 11:30:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:12,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:12,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2023-11-17 11:30:12,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 11:30:12,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:12,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2023-11-17 11:30:12,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:12,303 INFO L124 PetriNetUnfolderBase]: 577/932 cut-off events. [2023-11-17 11:30:12,304 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-17 11:30:12,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 932 events. 577/932 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4274 event pairs, 206 based on Foata normal form. 58/990 useless extension candidates. Maximal degree in co-relation 1912. Up to 482 conditions per place. [2023-11-17 11:30:12,312 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-11-17 11:30:12,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 135 flow [2023-11-17 11:30:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-17 11:30:12,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310734463276836 [2023-11-17 11:30:12,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-17 11:30:12,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-17 11:30:12,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:12,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-17 11:30:12,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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 11:30:12,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:30:12,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:30:12,332 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 94 transitions. [2023-11-17 11:30:12,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 135 flow [2023-11-17 11:30:12,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:30:12,337 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 82 flow [2023-11-17 11:30:12,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, 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=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-11-17 11:30:12,340 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 11:30:12,341 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 82 flow [2023-11-17 11:30:12,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 11:30:12,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:12,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:12,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:30:12,341 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 11:30:12,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash -563408070, now seen corresponding path program 1 times [2023-11-17 11:30:12,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:12,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442044354] [2023-11-17 11:30:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:12,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442044354] [2023-11-17 11:30:12,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442044354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:12,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:12,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394874118] [2023-11-17 11:30:12,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:12,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:12,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2023-11-17 11:30:12,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:12,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:12,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2023-11-17 11:30:12,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:12,605 INFO L124 PetriNetUnfolderBase]: 481/782 cut-off events. [2023-11-17 11:30:12,606 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2023-11-17 11:30:12,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2102 conditions, 782 events. 481/782 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3168 event pairs, 189 based on Foata normal form. 24/806 useless extension candidates. Maximal degree in co-relation 2090. Up to 360 conditions per place. [2023-11-17 11:30:12,609 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 26 selfloop transitions, 6 changer transitions 3/35 dead transitions. [2023-11-17 11:30:12,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 196 flow [2023-11-17 11:30:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-17 11:30:12,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4915254237288136 [2023-11-17 11:30:12,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-17 11:30:12,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-17 11:30:12,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:12,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-17 11:30:12,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 11:30:12,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:12,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:12,612 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 82 flow. Second operand 4 states and 116 transitions. [2023-11-17 11:30:12,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 196 flow [2023-11-17 11:30:12,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:12,615 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 108 flow [2023-11-17 11:30:12,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-17 11:30:12,615 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 11:30:12,615 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 108 flow [2023-11-17 11:30:12,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:12,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:12,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:12,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:30:12,616 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 11:30:12,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash -268262375, now seen corresponding path program 1 times [2023-11-17 11:30:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:12,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782998571] [2023-11-17 11:30:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:12,687 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 11:30:12,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782998571] [2023-11-17 11:30:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782998571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:12,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:12,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:12,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312157020] [2023-11-17 11:30:12,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:12,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:12,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:12,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:12,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:12,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2023-11-17 11:30:12,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 11:30:12,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:12,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2023-11-17 11:30:12,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:12,745 INFO L124 PetriNetUnfolderBase]: 322/572 cut-off events. [2023-11-17 11:30:12,745 INFO L125 PetriNetUnfolderBase]: For 538/538 co-relation queries the response was YES. [2023-11-17 11:30:12,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1652 conditions, 572 events. 322/572 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2392 event pairs, 79 based on Foata normal form. 41/613 useless extension candidates. Maximal degree in co-relation 1637. Up to 442 conditions per place. [2023-11-17 11:30:12,748 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 35 selfloop transitions, 4 changer transitions 3/42 dead transitions. [2023-11-17 11:30:12,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 280 flow [2023-11-17 11:30:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-17 11:30:12,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649717514124294 [2023-11-17 11:30:12,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-17 11:30:12,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-17 11:30:12,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:12,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-17 11:30:12,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 11:30:12,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:30:12,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:30:12,751 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 108 flow. Second operand 3 states and 100 transitions. [2023-11-17 11:30:12,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 280 flow [2023-11-17 11:30:12,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:12,753 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 131 flow [2023-11-17 11:30:12,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-11-17 11:30:12,754 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 11:30:12,754 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 131 flow [2023-11-17 11:30:12,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 11:30:12,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:12,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:12,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:30:12,755 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 11:30:12,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 271921336, now seen corresponding path program 1 times [2023-11-17 11:30:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985645630] [2023-11-17 11:30:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:12,806 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 11:30:12,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985645630] [2023-11-17 11:30:12,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985645630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:12,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:12,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:12,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610227095] [2023-11-17 11:30:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:12,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2023-11-17 11:30:12,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 11:30:12,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:12,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2023-11-17 11:30:12,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:12,867 INFO L124 PetriNetUnfolderBase]: 207/394 cut-off events. [2023-11-17 11:30:12,867 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2023-11-17 11:30:12,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 394 events. 207/394 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1585 event pairs, 49 based on Foata normal form. 46/440 useless extension candidates. Maximal degree in co-relation 1355. Up to 150 conditions per place. [2023-11-17 11:30:12,869 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 40 selfloop transitions, 7 changer transitions 10/57 dead transitions. [2023-11-17 11:30:12,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 399 flow [2023-11-17 11:30:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-17 11:30:12,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2023-11-17 11:30:12,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-17 11:30:12,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-17 11:30:12,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:12,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-17 11:30:12,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:12,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:12,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:12,872 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 131 flow. Second operand 4 states and 134 transitions. [2023-11-17 11:30:12,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 399 flow [2023-11-17 11:30:12,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 57 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:12,874 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 167 flow [2023-11-17 11:30:12,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-17 11:30:12,874 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 11:30:12,875 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 167 flow [2023-11-17 11:30:12,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 11:30:12,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:12,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:12,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:30:12,875 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 11:30:12,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:12,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1530741967, now seen corresponding path program 1 times [2023-11-17 11:30:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957937120] [2023-11-17 11:30:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:12,940 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 11:30:12,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:12,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957937120] [2023-11-17 11:30:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957937120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:12,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:12,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:12,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334002727] [2023-11-17 11:30:12,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:12,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:12,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:12,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:12,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2023-11-17 11:30:12,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:12,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:12,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2023-11-17 11:30:12,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:13,063 INFO L124 PetriNetUnfolderBase]: 293/579 cut-off events. [2023-11-17 11:30:13,063 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES. [2023-11-17 11:30:13,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 579 events. 293/579 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2794 event pairs, 66 based on Foata normal form. 6/585 useless extension candidates. Maximal degree in co-relation 2246. Up to 273 conditions per place. [2023-11-17 11:30:13,066 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 41 selfloop transitions, 5 changer transitions 17/63 dead transitions. [2023-11-17 11:30:13,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 494 flow [2023-11-17 11:30:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2023-11-17 11:30:13,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538135593220339 [2023-11-17 11:30:13,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 127 transitions. [2023-11-17 11:30:13,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 127 transitions. [2023-11-17 11:30:13,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:13,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 127 transitions. [2023-11-17 11:30:13,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 11:30:13,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:13,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:13,069 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 167 flow. Second operand 4 states and 127 transitions. [2023-11-17 11:30:13,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 494 flow [2023-11-17 11:30:13,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 456 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:13,072 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 184 flow [2023-11-17 11:30:13,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-11-17 11:30:13,073 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-17 11:30:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 184 flow [2023-11-17 11:30:13,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:13,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:30:13,073 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 11:30:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash -671867437, now seen corresponding path program 2 times [2023-11-17 11:30:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330589833] [2023-11-17 11:30:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:13,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330589833] [2023-11-17 11:30:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330589833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:13,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:13,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:30:13,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891778683] [2023-11-17 11:30:13,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:13,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:30:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:13,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:30:13,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:30:13,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2023-11-17 11:30:13,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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 11:30:13,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:13,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2023-11-17 11:30:13,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:13,207 INFO L124 PetriNetUnfolderBase]: 193/391 cut-off events. [2023-11-17 11:30:13,207 INFO L125 PetriNetUnfolderBase]: For 723/723 co-relation queries the response was YES. [2023-11-17 11:30:13,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 391 events. 193/391 cut-off events. For 723/723 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1736 event pairs, 47 based on Foata normal form. 27/418 useless extension candidates. Maximal degree in co-relation 1466. Up to 166 conditions per place. [2023-11-17 11:30:13,209 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 36 selfloop transitions, 10 changer transitions 11/57 dead transitions. [2023-11-17 11:30:13,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 464 flow [2023-11-17 11:30:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:30:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:30:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2023-11-17 11:30:13,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322033898305085 [2023-11-17 11:30:13,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 157 transitions. [2023-11-17 11:30:13,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 157 transitions. [2023-11-17 11:30:13,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:13,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 157 transitions. [2023-11-17 11:30:13,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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 11:30:13,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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 11:30:13,212 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 184 flow. Second operand 5 states and 157 transitions. [2023-11-17 11:30:13,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 464 flow [2023-11-17 11:30:13,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 430 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 11:30:13,215 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 194 flow [2023-11-17 11:30:13,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-11-17 11:30:13,216 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-17 11:30:13,216 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 194 flow [2023-11-17 11:30:13,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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 11:30:13,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:13,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:13,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:30:13,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:13,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2052101630, now seen corresponding path program 1 times [2023-11-17 11:30:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130167989] [2023-11-17 11:30:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:13,283 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 11:30:13,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130167989] [2023-11-17 11:30:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130167989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:13,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127057187] [2023-11-17 11:30:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:13,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:13,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2023-11-17 11:30:13,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:13,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2023-11-17 11:30:13,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:13,353 INFO L124 PetriNetUnfolderBase]: 241/498 cut-off events. [2023-11-17 11:30:13,353 INFO L125 PetriNetUnfolderBase]: For 1228/1228 co-relation queries the response was YES. [2023-11-17 11:30:13,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 498 events. 241/498 cut-off events. For 1228/1228 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2459 event pairs, 37 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2035. Up to 241 conditions per place. [2023-11-17 11:30:13,354 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-11-17 11:30:13,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 510 flow [2023-11-17 11:30:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:13,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2023-11-17 11:30:13,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508474576271186 [2023-11-17 11:30:13,355 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 130 transitions. [2023-11-17 11:30:13,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 130 transitions. [2023-11-17 11:30:13,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:13,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 130 transitions. [2023-11-17 11:30:13,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:13,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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 11:30:13,357 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 194 flow. Second operand 4 states and 130 transitions. [2023-11-17 11:30:13,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 510 flow [2023-11-17 11:30:13,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 454 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 11:30:13,360 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-11-17 11:30:13,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-11-17 11:30:13,360 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-11-17 11:30:13,360 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-11-17 11:30:13,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:13,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:30:13,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:30:13,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:30:13,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:30:13,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:30:13,363 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-17 11:30:13,365 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:30:13,365 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:30:13,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:30:13 BasicIcfg [2023-11-17 11:30:13,368 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:30:13,368 INFO L158 Benchmark]: Toolchain (without parser) took 3221.20ms. Allocated memory was 253.8MB in the beginning and 317.7MB in the end (delta: 64.0MB). Free memory was 197.7MB in the beginning and 163.8MB in the end (delta: 33.9MB). Peak memory consumption was 98.9MB. Max. memory is 8.0GB. [2023-11-17 11:30:13,368 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:30:13,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.56ms. Allocated memory is still 253.8MB. Free memory was 197.7MB in the beginning and 177.2MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:30:13,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.02ms. Allocated memory is still 253.8MB. Free memory was 177.2MB in the beginning and 175.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:30:13,369 INFO L158 Benchmark]: Boogie Preprocessor took 26.53ms. Allocated memory is still 253.8MB. Free memory was 175.1MB in the beginning and 173.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:30:13,369 INFO L158 Benchmark]: RCFGBuilder took 419.60ms. Allocated memory is still 253.8MB. Free memory was 173.5MB in the beginning and 151.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-11-17 11:30:13,369 INFO L158 Benchmark]: TraceAbstraction took 2307.00ms. Allocated memory was 253.8MB in the beginning and 317.7MB in the end (delta: 64.0MB). Free memory was 151.0MB in the beginning and 163.8MB in the end (delta: -12.8MB). Peak memory consumption was 52.7MB. Max. memory is 8.0GB. [2023-11-17 11:30:13,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.56ms. Allocated memory is still 253.8MB. Free memory was 197.7MB in the beginning and 177.2MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.02ms. Allocated memory is still 253.8MB. Free memory was 177.2MB in the beginning and 175.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.53ms. Allocated memory is still 253.8MB. Free memory was 175.1MB in the beginning and 173.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 419.60ms. Allocated memory is still 253.8MB. Free memory was 173.5MB in the beginning and 151.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2307.00ms. Allocated memory was 253.8MB in the beginning and 317.7MB in the end (delta: 64.0MB). Free memory was 151.0MB in the beginning and 163.8MB in the end (delta: -12.8MB). Peak memory consumption was 52.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 45 PlacesBefore, 27 PlacesAfterwards, 35 TransitionsBefore, 17 TransitionsAfterwards, 714 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 981 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 645, independent: 601, independent conditional: 0, independent unconditional: 601, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 469, independent: 441, independent conditional: 0, independent unconditional: 441, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 469, independent: 433, independent conditional: 0, independent unconditional: 433, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 645, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 469, unknown conditional: 0, unknown unconditional: 469] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 68 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: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 337 IncrementalHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 337 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=6, InterpolantAutomatonStates: 27, 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, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 11:30:13,404 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...