/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/gemcutter/svcomp-Reach-32bit-GemCutter_Default.epf --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-dev-4cc0a57-m [2025-04-14 14:50:09,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 14:50:09,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/gemcutter/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-14 14:50:09,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 14:50:09,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 14:50:09,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 14:50:09,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 14:50:09,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 14:50:09,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 14:50:09,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 14:50:09,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 14:50:09,516 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 14:50:09,517 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 14:50:09,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 14:50:09,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 14:50:09,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 14:50:09,518 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-14 14:50:09,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 14:50:09,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-14 14:50:09,518 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-14 14:50:09,518 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-14 14:50:09,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 14:50:09,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 14:50:09,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 14:50:09,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 14:50:09,746 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 14:50:09,747 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 14:50:09,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2025-04-14 14:50:11,081 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eda21cdf/89af290a72a14a37a3e8af59f51c9bc5/FLAG3a353ad78 [2025-04-14 14:50:11,339 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 14:50:11,340 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2025-04-14 14:50:11,355 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eda21cdf/89af290a72a14a37a3e8af59f51c9bc5/FLAG3a353ad78 [2025-04-14 14:50:12,081 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eda21cdf/89af290a72a14a37a3e8af59f51c9bc5 [2025-04-14 14:50:12,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 14:50:12,085 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 14:50:12,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 14:50:12,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 14:50:12,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 14:50:12,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e03f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12, skipping insertion in model container [2025-04-14 14:50:12,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 14:50:12,402 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-lit/qw2004-2b.i[30003,30016] [2025-04-14 14:50:12,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 14:50:12,434 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 14:50:12,472 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-lit/qw2004-2b.i[30003,30016] [2025-04-14 14:50:12,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 14:50:12,502 INFO L204 MainTranslator]: Completed translation [2025-04-14 14:50:12,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12 WrapperNode [2025-04-14 14:50:12,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 14:50:12,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 14:50:12,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 14:50:12,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 14:50:12,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,545 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 114 [2025-04-14 14:50:12,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 14:50:12,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 14:50:12,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 14:50:12,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 14:50:12,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,562 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 14:50:12,569 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 14:50:12,569 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 14:50:12,569 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 14:50:12,569 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (1/1) ... [2025-04-14 14:50:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 14:50:12,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 14:50:12,595 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) [2025-04-14 14:50:12,600 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 [2025-04-14 14:50:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2025-04-14 14:50:12,614 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2025-04-14 14:50:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 14:50:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 14:50:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-14 14:50:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 14:50:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 14:50:12,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 14:50:12,615 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 14:50:12,693 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 14:50:12,694 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 14:50:12,829 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 14:50:12,829 INFO L307 CfgBuilder]: Performing block encoding [2025-04-14 14:50:12,910 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 14:50:12,910 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 14:50:12,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 02:50:12 BoogieIcfgContainer [2025-04-14 14:50:12,911 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 14:50:12,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 14:50:12,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 14:50:12,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 14:50:12,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 02:50:12" (1/3) ... [2025-04-14 14:50:12,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cdd681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 02:50:12, skipping insertion in model container [2025-04-14 14:50:12,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:50:12" (2/3) ... [2025-04-14 14:50:12,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cdd681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 02:50:12, skipping insertion in model container [2025-04-14 14:50:12,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 02:50:12" (3/3) ... [2025-04-14 14:50:12,919 INFO L128 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2025-04-14 14:50:12,929 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 14:50:12,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG qw2004-2b.i that has 2 procedures, 36 locations, 39 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 14:50:12,931 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 14:50:12,961 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 14:50:12,993 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 14:50:12,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-14 14:50:12,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 14:50:12,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-14 14:50:12,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-14 14:50:13,060 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-14 14:50:13,072 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-14 14:50:13,078 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=PARTIAL_ORDER_FA, 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;@25881ca1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 14:50:13,078 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-14 14:50:13,176 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 14:50:13,177 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 14:50:13,177 INFO L139 ounterexampleChecker]: Examining path program with hash -303644866, occurence #1 [2025-04-14 14:50:13,177 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 14:50:13,177 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 14:50:13,182 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 14:50:13,182 INFO L85 PathProgramCache]: Analyzing trace with hash 567031853, now seen corresponding path program 1 times [2025-04-14 14:50:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 14:50:13,187 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920148005] [2025-04-14 14:50:13,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 14:50:13,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 14:50:13,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 14:50:13,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 14:50:13,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 14:50:13,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 14:50:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 14:50:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 14:50:13,451 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920148005] [2025-04-14 14:50:13,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920148005] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 14:50:13,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 14:50:13,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 14:50:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483389536] [2025-04-14 14:50:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 14:50:13,460 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 14:50:13,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 14:50:13,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 14:50:13,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 14:50:13,475 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:50:13,477 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 14:50:13,478 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-04-14 14:50:13,478 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:50:13,622 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 14:50:13,622 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 14:50:13,622 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 14:50:13,622 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 14:50:13,622 INFO L139 ounterexampleChecker]: Examining path program with hash 1364163299, occurence #1 [2025-04-14 14:50:13,622 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 14:50:13,622 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 14:50:13,623 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 14:50:13,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1920380213, now seen corresponding path program 1 times [2025-04-14 14:50:13,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 14:50:13,623 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060954850] [2025-04-14 14:50:13,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 14:50:13,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 14:50:13,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 14:50:13,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 14:50:13,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 14:50:13,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 14:50:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 14:50:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 14:50:13,741 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060954850] [2025-04-14 14:50:13,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060954850] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 14:50:13,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 14:50:13,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 14:50:13,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962120538] [2025-04-14 14:50:13,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 14:50:13,742 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 14:50:13,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 14:50:13,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 14:50:13,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-14 14:50:13,743 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:50:13,743 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 14:50:13,743 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2025-04-14 14:50:13,743 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-14 14:50:13,743 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:50:13,840 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 14:50:13,841 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 14:50:13,841 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 14:50:13,841 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 14:50:13,841 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 14:50:13,841 INFO L139 ounterexampleChecker]: Examining path program with hash -1058832508, occurence #1 [2025-04-14 14:50:13,841 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 14:50:13,841 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 14:50:13,842 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 14:50:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1620285491, now seen corresponding path program 1 times [2025-04-14 14:50:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 14:50:13,842 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020301171] [2025-04-14 14:50:13,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 14:50:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 14:50:13,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-14 14:50:13,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-14 14:50:13,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 14:50:13,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 14:50:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 14:50:13,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 14:50:13,889 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020301171] [2025-04-14 14:50:13,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020301171] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 14:50:13,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 14:50:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 14:50:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597704247] [2025-04-14 14:50:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 14:50:13,889 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 14:50:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 14:50:13,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 14:50:13,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 14:50:13,890 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:50:13,890 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 14:50:13,890 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2025-04-14 14:50:13,890 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-14 14:50:13,890 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-04-14 14:50:13,890 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:50:13,993 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 14:50:13,993 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 14:50:13,994 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 14:50:13,994 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 14:50:13,994 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 14:50:13,994 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 14:50:13,994 INFO L139 ounterexampleChecker]: Examining path program with hash -1582031035, occurence #1 [2025-04-14 14:50:13,994 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 14:50:13,994 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 14:50:13,994 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 14:50:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash -139693493, now seen corresponding path program 2 times [2025-04-14 14:50:13,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 14:50:13,995 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512844655] [2025-04-14 14:50:13,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 14:50:13,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 14:50:14,001 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 1 equivalence classes. [2025-04-14 14:50:14,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 14:50:14,004 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 14:50:14,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 14:50:14,004 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 14:50:14,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 14:50:14,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 14:50:14,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 14:50:14,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 14:50:14,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 14:50:14,032 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 14:50:14,033 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-04-14 14:50:14,036 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-04-14 14:50:14,036 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 14:50:14,040 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2025-04-14 14:50:14,084 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 14:50:14,084 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 14:50:14,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-14 14:50:14,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 02:50:14 BasicIcfg [2025-04-14 14:50:14,093 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 14:50:14,094 INFO L158 Benchmark]: Toolchain (without parser) took 2009.29ms. Allocated memory is still 155.2MB. Free memory was 108.8MB in the beginning and 47.4MB in the end (delta: 61.4MB). Peak memory consumption was 62.1MB. Max. memory is 8.0GB. [2025-04-14 14:50:14,094 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 14:50:14,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.29ms. Allocated memory is still 155.2MB. Free memory was 108.8MB in the beginning and 84.3MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 14:50:14,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.51ms. Allocated memory is still 155.2MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 14:50:14,095 INFO L158 Benchmark]: Boogie Preprocessor took 21.71ms. Allocated memory is still 155.2MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 993.4kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 14:50:14,095 INFO L158 Benchmark]: IcfgBuilder took 342.35ms. Allocated memory is still 155.2MB. Free memory was 81.2MB in the beginning and 58.1MB in the end (delta: 23.1MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 14:50:14,095 INFO L158 Benchmark]: TraceAbstraction took 1181.51ms. Allocated memory is still 155.2MB. Free memory was 57.6MB in the beginning and 47.4MB in the end (delta: 10.2MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. [2025-04-14 14:50:14,096 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 155.2MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 417.29ms. Allocated memory is still 155.2MB. Free memory was 108.8MB in the beginning and 84.3MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.51ms. Allocated memory is still 155.2MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 21.71ms. Allocated memory is still 155.2MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 993.4kB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 342.35ms. Allocated memory is still 155.2MB. Free memory was 81.2MB in the beginning and 58.1MB in the end (delta: 23.1MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 1181.51ms. Allocated memory is still 155.2MB. Free memory was 57.6MB in the beginning and 47.4MB in the end (delta: 10.2MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 492, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 20, dependent conditional: 12, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 484, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 12, dependent conditional: 4, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 484, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 12, dependent conditional: 4, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 491, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 19, dependent conditional: 11, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 491, independent: 472, independent conditional: 0, independent unconditional: 472, dependent: 19, dependent conditional: 4, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 491, independent: 472, independent conditional: 0, independent unconditional: 472, dependent: 19, dependent conditional: 4, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 376, independent: 366, independent conditional: 0, independent unconditional: 366, dependent: 10, dependent conditional: 2, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 376, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 11, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 10, dependent conditional: 2, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 10, dependent conditional: 2, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 116, dependent conditional: 19, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 491, independent: 106, independent conditional: 0, independent unconditional: 106, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 376, unknown conditional: 2, unknown unconditional: 374] , Statistics on independence cache: Total cache size (in pairs): 376, Positive cache size: 366, Positive conditional cache size: 0, Positive unconditional cache size: 366, Negative cache size: 10, Negative conditional cache size: 2, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 113, Maximal queried relation: 3, Independence queries for same thread: 8, Persistent sets #1 benchmarks: Persistent set computation time: 0.1s, Number of persistent set computation: 37, Number of trivial persistent sets: 19, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 374, independent: 366, independent conditional: 0, independent unconditional: 366, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 492, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 20, dependent conditional: 12, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 484, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 12, dependent conditional: 4, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 484, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 12, dependent conditional: 4, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 491, independent: 472, independent conditional: 106, independent unconditional: 366, dependent: 19, dependent conditional: 11, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 491, independent: 472, independent conditional: 0, independent unconditional: 472, dependent: 19, dependent conditional: 4, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 491, independent: 472, independent conditional: 0, independent unconditional: 472, dependent: 19, dependent conditional: 4, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 376, independent: 366, independent conditional: 0, independent unconditional: 366, dependent: 10, dependent conditional: 2, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 376, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 11, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 10, dependent conditional: 2, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 10, dependent conditional: 2, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 116, dependent conditional: 19, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 491, independent: 106, independent conditional: 0, independent unconditional: 106, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 376, unknown conditional: 2, unknown unconditional: 374] , Statistics on independence cache: Total cache size (in pairs): 376, Positive cache size: 366, Positive conditional cache size: 0, Positive unconditional cache size: 366, Negative cache size: 10, Negative conditional cache size: 2, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 113, Maximal queried relation: 3, Independence queries for same thread: 8 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t=-1] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [\at(arg, Pre)={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L712] 0 pendingIo = lp + 1 VAL [lp=1, lsf=0, pendingIo=2, stopped=0, stoppingEvent=0, stoppingFlag=1] [L715] 0 return 0; VAL [\result=0, lsf=0, pendingIo=2, stopped=0, stoppingEvent=0, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 VAL [\at(arg, Pre)={0:0}, arg={0:0}, pendingIo=2, status=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=2, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [\at(arg, Pre)={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 VAL [\at(arg, Pre)={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [\at(arg, Pre)={0:0}, arg={0:0}, local_assertion=0, pendingIo=2, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) VAL [\at(cond, Pre)=0, cond=0, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L690] 0 reach_error() VAL [\at(cond, Pre)=0, cond=0, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 50 locations, 54 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.4s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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, ConComCheckerStatistics: SuccessfulCommutativityProofs: 0, ConComChecker Statistics: CheckTime [ms]: 0, ConditionCalculationTime [ms]: 0, ConditionCalculations: 0, QuantifiedConditions: 0, TraceChecks: 0, UnknownTraceChecks: 0, UnsatisfiedConditions: 0, ImperfectProofs: 0 RESULT: Ultimate proved your program to be incorrect! [2025-04-14 14:50:14,108 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 Received shutdown request...