./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 44c38e66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 19:33:54,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 19:33:54,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 19:33:54,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 19:33:54,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 19:33:54,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 19:33:54,308 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 19:33:54,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 19:33:54,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 19:33:54,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 19:33:54,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 19:33:54,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 19:33:54,310 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 19:33:54,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 19:33:54,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 19:33:54,311 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 19:33:54,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 19:33:54,312 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 19:33:54,312 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 19:33:54,312 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 19:33:54,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 19:33:54,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 19:33:54,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 19:33:54,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 19:33:54,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 19:33:54,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 19:33:54,313 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 19:33:54,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 19:33:54,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 19:33:54,314 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 19:33:54,314 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 19:33:54,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 [2025-04-24 19:33:54,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 19:33:54,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 19:33:54,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 19:33:54,529 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 19:33:54,529 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 19:33:54,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2025-04-24 19:33:55,787 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e2509b2f6/87f434477a144dfc9056b0bf1c542d80/FLAG18e54b410 [2025-04-24 19:33:56,068 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 19:33:56,070 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2025-04-24 19:33:56,084 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e2509b2f6/87f434477a144dfc9056b0bf1c542d80/FLAG18e54b410 [2025-04-24 19:33:56,989 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e2509b2f6/87f434477a144dfc9056b0bf1c542d80 [2025-04-24 19:33:56,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 19:33:56,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 19:33:56,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 19:33:56,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 19:33:56,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 19:33:56,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 07:33:56" (1/1) ... [2025-04-24 19:33:56,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd94c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:56, skipping insertion in model container [2025-04-24 19:33:56,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 07:33:56" (1/1) ... [2025-04-24 19:33:57,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 19:33:57,138 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2025-04-24 19:33:57,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 19:33:57,241 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 19:33:57,258 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2025-04-24 19:33:57,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 19:33:57,327 INFO L204 MainTranslator]: Completed translation [2025-04-24 19:33:57,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57 WrapperNode [2025-04-24 19:33:57,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 19:33:57,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 19:33:57,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 19:33:57,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 19:33:57,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,359 INFO L138 Inliner]: procedures = 163, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2025-04-24 19:33:57,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 19:33:57,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 19:33:57,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 19:33:57,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 19:33:57,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,369 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 19:33:57,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 19:33:57,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 19:33:57,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 19:33:57,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (1/1) ... [2025-04-24 19:33:57,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 19:33:57,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 19:33:57,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 19:33:57,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 19:33:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 19:33:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 19:33:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-24 19:33:57,419 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-24 19:33:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 19:33:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 19:33:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 19:33:57,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 19:33:57,420 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 19:33:57,511 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 19:33:57,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 19:33:57,633 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 19:33:57,633 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 19:33:57,712 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 19:33:57,713 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 19:33:57,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 07:33:57 BoogieIcfgContainer [2025-04-24 19:33:57,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 19:33:57,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 19:33:57,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 19:33:57,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 19:33:57,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 07:33:56" (1/3) ... [2025-04-24 19:33:57,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779e3c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 07:33:57, skipping insertion in model container [2025-04-24 19:33:57,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:57" (2/3) ... [2025-04-24 19:33:57,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779e3c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 07:33:57, skipping insertion in model container [2025-04-24 19:33:57,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 07:33:57" (3/3) ... [2025-04-24 19:33:57,723 INFO L128 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2025-04-24 19:33:57,732 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 19:33:57,733 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i that has 2 procedures, 32 locations, 32 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-24 19:33:57,734 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 19:33:57,761 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-24 19:33:57,796 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 19:33:57,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 19:33:57,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 19:33:57,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 19:33:57,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 19:33:57,857 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 19:33:57,868 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 19:33:57,873 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;@7723b0d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 19:33:57,873 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-24 19:33:58,055 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 19:33:58,057 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 19:33:58,057 INFO L139 ounterexampleChecker]: Examining path program with hash 931400492, occurence #1 [2025-04-24 19:33:58,057 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 19:33:58,057 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 19:33:58,060 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 19:33:58,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1813828078, now seen corresponding path program 1 times [2025-04-24 19:33:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 19:33:58,071 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282937024] [2025-04-24 19:33:58,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 19:33:58,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 19:33:58,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-24 19:33:58,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-24 19:33:58,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 19:33:58,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 19:33:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 19:33:58,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 19:33:58,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282937024] [2025-04-24 19:33:58,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282937024] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 19:33:58,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 19:33:58,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 19:33:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348108101] [2025-04-24 19:33:58,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 19:33:58,400 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 19:33:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 19:33:58,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 19:33:58,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 19:33:58,412 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 19:33:58,413 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 19:33:58,414 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2025-04-24 19:33:58,414 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 19:33:58,468 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 19:33:58,468 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 19:33:58,469 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 19:33:58,469 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 19:33:58,469 INFO L139 ounterexampleChecker]: Examining path program with hash 2137964398, occurence #1 [2025-04-24 19:33:58,469 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 19:33:58,469 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 19:33:58,469 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 19:33:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1506691641, now seen corresponding path program 1 times [2025-04-24 19:33:58,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 19:33:58,469 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908669357] [2025-04-24 19:33:58,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 19:33:58,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 19:33:58,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 19:33:58,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 19:33:58,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 19:33:58,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 19:33:58,497 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 19:33:58,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 19:33:58,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 19:33:58,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 19:33:58,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 19:33:58,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 19:33:58,537 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 19:33:58,540 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-04-24 19:33:58,541 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-04-24 19:33:58,541 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 19:33:58,546 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-24 19:33:58,585 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 19:33:58,587 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 19:33:58,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-24 19:33:58,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 07:33:58 BasicIcfg [2025-04-24 19:33:58,597 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 19:33:58,598 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 19:33:58,598 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 19:33:58,598 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 19:33:58,598 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 07:33:57" (3/4) ... [2025-04-24 19:33:58,599 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-24 19:33:58,642 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 4. [2025-04-24 19:33:58,677 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-24 19:33:58,677 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-24 19:33:58,677 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 19:33:58,678 INFO L158 Benchmark]: Toolchain (without parser) took 1685.10ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 84.4MB in the end (delta: 38.5MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2025-04-24 19:33:58,678 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 201.3MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 19:33:58,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.68ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 100.7MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-24 19:33:58,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.12ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 98.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 19:33:58,678 INFO L158 Benchmark]: Boogie Preprocessor took 15.45ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 97.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 19:33:58,678 INFO L158 Benchmark]: RCFGBuilder took 339.72ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 72.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-24 19:33:58,679 INFO L158 Benchmark]: TraceAbstraction took 880.93ms. Allocated memory is still 167.8MB. Free memory was 72.3MB in the beginning and 91.1MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 19:33:58,680 INFO L158 Benchmark]: Witness Printer took 79.35ms. Allocated memory is still 167.8MB. Free memory was 91.1MB in the beginning and 84.4MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 19:33:58,682 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 201.3MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.68ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 100.7MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.12ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 98.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.45ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 97.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 339.72ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 72.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 880.93ms. Allocated memory is still 167.8MB. Free memory was 72.3MB in the beginning and 91.1MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 79.35ms. Allocated memory is still 167.8MB. Free memory was 91.1MB in the beginning and 84.4MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 140, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 138, independent: 133, independent conditional: 0, independent unconditional: 133, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 0, independent unconditional: 133, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 120, independent: 115, independent conditional: 0, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 120, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 9, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 146, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 138, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 120, unknown conditional: 0, unknown unconditional: 120] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 18, Maximal queried relation: 0, Independence queries for same thread: 2, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 24, Number of trivial persistent sets: 24, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 120, independent: 115, independent conditional: 0, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 140, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 18, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 138, independent: 133, independent conditional: 0, independent unconditional: 133, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 0, independent unconditional: 133, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 120, independent: 115, independent conditional: 0, independent unconditional: 115, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 120, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 9, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 146, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 138, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 120, unknown conditional: 0, unknown unconditional: 120] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 18, Maximal queried relation: 0, Independence queries for same thread: 2 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, \at(arg, Pre)={0:0}, g=42, id=-1, r=1] [L688] 1 g = 42 VAL [A={3:0}, B={4:0}, \at(arg, Pre)={0:0}, arg={0:0}, g=42] [L691] 1 return ((void *)0); [L700] COND TRUE 0 \read(r) [L701] 0 g = 17 VAL [A={3:0}, B={4:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, g=17, id=-1, r=1] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) VAL [A={3:0}, B={4:0}, \at(arg, Pre)={0:0}, \at(cond, Pre)=0, \result={0:0}, arg={0:0}, cond=0, g=17] [L19] 0 reach_error() VAL [A={3:0}, B={4:0}, \at(arg, Pre)={0:0}, \at(cond, Pre)=0, \result={0:0}, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: 697]: 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, 43 locations, 43 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, 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: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2025-04-24 19:33:58,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE