/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 ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:08:10,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:08:10,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 17:08:10,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:08:10,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:08:10,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:08:10,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:08:10,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:08:10,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:08:10,423 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:08:10,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:08:10,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:08:10,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:08:10,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:08:10,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:08:10,425 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:08:10,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:08:10,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:08:10,425 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:08:10,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:08:10,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:08:10,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:08:10,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:08:10,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:08:10,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:08:10,426 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 17:08:10,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:08:10,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:08:10,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:08:10,650 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:08:10,651 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:08:10,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i [2025-04-13 17:08:11,940 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153bdaa14/c46fa5dcd6344dd59414a2fd40446cd0/FLAGbe79e909e [2025-04-13 17:08:12,223 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:08:12,224 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i [2025-04-13 17:08:12,239 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153bdaa14/c46fa5dcd6344dd59414a2fd40446cd0/FLAGbe79e909e [2025-04-13 17:08:12,942 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153bdaa14/c46fa5dcd6344dd59414a2fd40446cd0 [2025-04-13 17:08:12,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:08:12,946 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:08:12,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:08:12,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:08:12,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:08:12,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:08:12" (1/1) ... [2025-04-13 17:08:12,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22df58b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:12, skipping insertion in model container [2025-04-13 17:08:12,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:08:12" (1/1) ... [2025-04-13 17:08:12,975 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:08:13,285 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i[31350,31363] [2025-04-13 17:08:13,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:08:13,350 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:08:13,407 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i[31350,31363] [2025-04-13 17:08:13,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:08:13,459 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:08:13,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13 WrapperNode [2025-04-13 17:08:13,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:08:13,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:08:13,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:08:13,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:08:13,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,510 INFO L138 Inliner]: procedures = 171, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 767 [2025-04-13 17:08:13,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:08:13,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:08:13,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:08:13,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:08:13,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,556 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-04-13 17:08:13,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,570 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:08:13,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:08:13,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:08:13,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:08:13,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (1/1) ... [2025-04-13 17:08:13,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:08:13,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:08:13,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 17:08:13,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 17:08:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 17:08:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:08:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:08:13,640 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 17:08:13,742 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:08:13,744 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:08:14,391 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:08:14,393 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:08:14,393 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:08:44,862 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:08:44,865 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:08:45,128 INFO L313 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-13 17:08:45,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:08:45 BoogieIcfgContainer [2025-04-13 17:08:45,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:08:45,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:08:45,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:08:45,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:08:45,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:08:12" (1/3) ... [2025-04-13 17:08:45,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db0e802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:08:45, skipping insertion in model container [2025-04-13 17:08:45,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:08:13" (2/3) ... [2025-04-13 17:08:45,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db0e802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:08:45, skipping insertion in model container [2025-04-13 17:08:45,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:08:45" (3/3) ... [2025-04-13 17:08:45,140 INFO L128 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1.i [2025-04-13 17:08:45,154 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:08:45,156 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 25_stack_longer-1.i that has 2 procedures, 24 locations, 29 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 17:08:45,156 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:08:45,260 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 17:08:45,292 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 30 transitions, 64 flow [2025-04-13 17:08:45,308 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81 states, 78 states have (on average 1.9871794871794872) internal successors, (155), 80 states have internal predecessors, (155), 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) [2025-04-13 17:08:45,326 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:08:45,337 INFO L340 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=FINITE_AUTOMATA, 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;@721e522a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:08:45,337 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 17:08:45,340 INFO L278 IsEmpty]: Start isEmpty. Operand has 81 states, 78 states have (on average 1.9871794871794872) internal successors, (155), 80 states have internal predecessors, (155), 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) [2025-04-13 17:08:45,343 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 17:08:45,343 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:08:45,344 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 17:08:45,345 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 17:08:45,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:08:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash 50856006, now seen corresponding path program 1 times [2025-04-13 17:08:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:08:45,355 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658920233] [2025-04-13 17:08:45,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:08:45,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2025-04-13 17:22:57,436 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 17:22:58,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown