/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.positions.where.we.compute.the.hoare.annotation All --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false -i ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.empire2-owicki-f61efc6-m [2025-03-15 00:20:00,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-15 00:20:00,716 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-NoLbe.epf [2025-03-15 00:20:00,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-15 00:20:00,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-15 00:20:00,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-15 00:20:00,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-15 00:20:00,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-15 00:20:00,746 INFO L153 SettingsManager]: * Use SBE=true [2025-03-15 00:20:00,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-15 00:20:00,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-15 00:20:00,747 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-15 00:20:00,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * To the following directory=./dump/ [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-15 00:20:00,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-15 00:20:00,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2025-03-15 00:20:01,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-15 00:20:01,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-15 00:20:01,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-15 00:20:01,019 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-15 00:20:01,019 INFO L274 PluginConnector]: CDTParser initialized [2025-03-15 00:20:01,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2025-03-15 00:20:02,215 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/741b58901/83a932d13af544269148a8c1346f26c5/FLAG56d2c4aa6 [2025-03-15 00:20:02,465 INFO L384 CDTParser]: Found 1 translation units. [2025-03-15 00:20:02,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2025-03-15 00:20:02,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/741b58901/83a932d13af544269148a8c1346f26c5/FLAG56d2c4aa6 [2025-03-15 00:20:02,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/741b58901/83a932d13af544269148a8c1346f26c5 [2025-03-15 00:20:02,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-15 00:20:02,796 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-03-15 00:20:02,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-15 00:20:02,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-15 00:20:02,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-15 00:20:02,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 12:20:02" (1/1) ... [2025-03-15 00:20:02,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d65b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:02, skipping insertion in model container [2025-03-15 00:20:02,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 12:20:02" (1/1) ... [2025-03-15 00:20:02,835 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-15 00:20:03,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-15 00:20:03,267 INFO L200 MainTranslator]: Completed pre-run [2025-03-15 00:20:03,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-15 00:20:03,474 INFO L204 MainTranslator]: Completed translation [2025-03-15 00:20:03,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03 WrapperNode [2025-03-15 00:20:03,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-15 00:20:03,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-15 00:20:03,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-15 00:20:03,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-15 00:20:03,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:03,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:03,794 INFO L138 Inliner]: procedures = 396, calls = 207, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 7615 [2025-03-15 00:20:03,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-15 00:20:03,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-15 00:20:03,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-15 00:20:03,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-15 00:20:03,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:03,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:03,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:03,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:04,177 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:04,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:04,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:04,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:04,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:04,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-15 00:20:04,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-15 00:20:04,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-15 00:20:04,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-15 00:20:04,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (1/1) ... [2025-03-15 00:20:04,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-15 00:20:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-15 00:20:04,352 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) [2025-03-15 00:20:04,355 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 [2025-03-15 00:20:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2025-03-15 00:20:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2025-03-15 00:20:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2025-03-15 00:20:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-15 00:20:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2025-03-15 00:20:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2025-03-15 00:20:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2025-03-15 00:20:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2025-03-15 00:20:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2025-03-15 00:20:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2025-03-15 00:20:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-15 00:20:04,382 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-15 00:20:04,731 INFO L234 CfgBuilder]: Building ICFG [2025-03-15 00:20:04,733 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-15 00:20:10,824 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-15 00:20:10,824 INFO L283 CfgBuilder]: Performing block encoding [2025-03-15 00:20:17,668 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-15 00:20:17,668 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-15 00:20:17,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 12:20:17 BoogieIcfgContainer [2025-03-15 00:20:17,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-15 00:20:17,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-15 00:20:17,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-15 00:20:17,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-15 00:20:17,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 12:20:02" (1/3) ... [2025-03-15 00:20:17,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769a3c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 12:20:17, skipping insertion in model container [2025-03-15 00:20:17,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 12:20:03" (2/3) ... [2025-03-15 00:20:17,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769a3c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 12:20:17, skipping insertion in model container [2025-03-15 00:20:17,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 12:20:17" (3/3) ... [2025-03-15 00:20:17,677 INFO L128 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2025-03-15 00:20:17,690 INFO L303 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-15 00:20:17,692 INFO L169 ceAbstractionStarter]: Applying trace abstraction to ICFG elimination_backoff_stack.i that has 8 procedures, 4482 locations, 1 initial locations, 0 loop locations, and 621 error locations. [2025-03-15 00:20:17,692 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-15 00:20:19,606 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-15 00:20:19,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-15 00:20:19,716 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@4c1d48b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-15 00:20:19,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1248 error locations. [2025-03-15 00:20:19,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-15 00:20:19,755 INFO L124 PetriNetUnfolderBase]: 0/70 cut-off events. [2025-03-15 00:20:19,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-15 00:20:19,757 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 00:20:19,758 INFO L221 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 00:20:19,758 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [instrPop3Err0ASSERT_VIOLATIONDATA_RACE, instrPop3Err1ASSERT_VIOLATIONDATA_RACE, instrPop3Err2ASSERT_VIOLATIONDATA_RACE, instrPop3Err3ASSERT_VIOLATIONDATA_RACE (and 1244 more)] === [2025-03-15 00:20:19,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 00:20:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1514740097, now seen corresponding path program 1 times [2025-03-15 00:20:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 00:20:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985077872] [2025-03-15 00:20:19,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 00:20:19,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 00:20:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 00:20:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 00:20:20,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 00:20:20,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985077872] [2025-03-15 00:20:20,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985077872] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-15 00:20:20,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-15 00:20:20,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-15 00:20:20,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551292592] [2025-03-15 00:20:20,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-15 00:20:20,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-15 00:20:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 00:20:20,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-15 00:20:20,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-15 00:20:20,801 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 2535 out of 4628 [2025-03-15 00:20:20,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4503 places, 4628 transitions, 9284 flow. Second operand has 6 states, 6 states have (on average 2536.6666666666665) internal successors, (15220), 6 states have internal predecessors, (15220), 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) [2025-03-15 00:20:20,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 00:20:20,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2535 of 4628 [2025-03-15 00:20:20,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 00:20:40,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-15 00:20:42,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-15 00:21:03,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-15 00:21:05,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []