./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/singleton.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 01849734 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/pthread/singleton.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 ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-0184973-m [2025-04-24 16:06:54,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 16:06:54,429 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 16:06:54,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 16:06:54,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 16:06:54,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 16:06:54,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 16:06:54,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 16:06:54,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 16:06:54,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 16:06:54,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 16:06:54,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 16:06:54,464 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 16:06:54,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 16:06:54,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 16:06:54,465 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 16:06:54,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 16:06:54,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 16:06:54,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 16:06:54,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 16:06:54,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 16:06:54,466 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:06:54,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:06:54,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:06:54,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 16:06:54,467 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 16:06:54,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 16:06:54,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 16:06:54,468 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 16:06:54,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 16:06:54,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 16:06:54,468 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 16:06:54,468 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 16:06:54,468 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 -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2025-04-24 16:06:54,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 16:06:54,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 16:06:54,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 16:06:54,733 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 16:06:54,733 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 16:06:54,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/singleton.i [2025-04-24 16:06:56,079 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/688e3d7b9/b51a39853f7043a682384a8ebfb51915/FLAGe05eb0425 [2025-04-24 16:06:56,337 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 16:06:56,339 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/singleton.i [2025-04-24 16:06:56,357 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/688e3d7b9/b51a39853f7043a682384a8ebfb51915/FLAGe05eb0425 [2025-04-24 16:06:57,130 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/688e3d7b9/b51a39853f7043a682384a8ebfb51915 [2025-04-24 16:06:57,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 16:06:57,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 16:06:57,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 16:06:57,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 16:06:57,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 16:06:57,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd3f75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57, skipping insertion in model container [2025-04-24 16:06:57,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 16:06:57,495 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/pthread/singleton.i[55547,55560] [2025-04-24 16:06:57,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:06:57,524 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 16:06:57,586 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/pthread/singleton.i[55547,55560] [2025-04-24 16:06:57,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:06:57,644 INFO L204 MainTranslator]: Completed translation [2025-04-24 16:06:57,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57 WrapperNode [2025-04-24 16:06:57,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 16:06:57,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 16:06:57,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 16:06:57,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 16:06:57,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,676 INFO L138 Inliner]: procedures = 323, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2025-04-24 16:06:57,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 16:06:57,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 16:06:57,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 16:06:57,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 16:06:57,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,688 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 16:06:57,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 16:06:57,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 16:06:57,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 16:06:57,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (1/1) ... [2025-04-24 16:06:57,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:06:57,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:06:57,720 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 16:06:57,722 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 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-04-24 16:06:57,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-04-24 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-24 16:06:57,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-24 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-24 16:06:57,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-24 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-24 16:06:57,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-24 16:06:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 16:06:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-24 16:06:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 16:06:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 16:06:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 16:06:57,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 16:06:57,740 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 16:06:57,831 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 16:06:57,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 16:06:57,960 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 16:06:57,960 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 16:06:58,062 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 16:06:58,062 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 16:06:58,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:06:58 BoogieIcfgContainer [2025-04-24 16:06:58,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 16:06:58,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 16:06:58,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 16:06:58,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 16:06:58,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 04:06:57" (1/3) ... [2025-04-24 16:06:58,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76667091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:06:58, skipping insertion in model container [2025-04-24 16:06:58,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:06:57" (2/3) ... [2025-04-24 16:06:58,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76667091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:06:58, skipping insertion in model container [2025-04-24 16:06:58,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:06:58" (3/3) ... [2025-04-24 16:06:58,070 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.i [2025-04-24 16:06:58,079 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 16:06:58,081 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.i that has 5 procedures, 39 locations, 35 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-24 16:06:58,081 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 16:06:58,158 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-04-24 16:06:58,193 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:06:58,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 16:06:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:06:58,197 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 16:06:58,200 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 16:06:58,269 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 16:06:58,281 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 16:06:58,288 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;@6295303d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:06:58,288 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-24 16:06:58,489 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:06:58,490 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:06:58,490 INFO L139 ounterexampleChecker]: Examining path program with hash 658782279, occurence #1 [2025-04-24 16:06:58,490 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:06:58,490 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:06:58,495 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:06:58,495 INFO L85 PathProgramCache]: Analyzing trace with hash 209583686, now seen corresponding path program 1 times [2025-04-24 16:06:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:06:58,501 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033935778] [2025-04-24 16:06:58,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:06:58,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:06:58,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-24 16:06:58,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-24 16:06:58,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:06:58,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 16:06:58,593 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 16:06:58,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-04-24 16:06:58,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-04-24 16:06:58,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:06:58,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 16:06:58,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 16:06:58,658 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 16:06:58,659 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-04-24 16:06:58,661 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-04-24 16:06:58,661 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 16:06:58,665 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-24 16:06:58,667 INFO L320 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/2) [2025-04-24 16:06:58,747 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 16:06:58,748 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 16:06:58,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-24 16:06:58,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 04:06:58 BasicIcfg [2025-04-24 16:06:58,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 16:06:58,757 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 16:06:58,757 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 16:06:58,757 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 16:06:58,758 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:06:58" (3/4) ... [2025-04-24 16:06:58,758 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-24 16:06:58,816 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 3. [2025-04-24 16:06:58,864 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-24 16:06:58,865 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-24 16:06:58,865 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 16:06:58,866 INFO L158 Benchmark]: Toolchain (without parser) took 1732.03ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 84.2MB in the end (delta: 6.2MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2025-04-24 16:06:58,867 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:06:58,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.76ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 55.6MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-24 16:06:58,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.45ms. Allocated memory is still 117.4MB. Free memory was 55.4MB in the beginning and 53.2MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 16:06:58,868 INFO L158 Benchmark]: Boogie Preprocessor took 19.64ms. Allocated memory is still 117.4MB. Free memory was 53.2MB in the beginning and 52.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:06:58,868 INFO L158 Benchmark]: RCFGBuilder took 366.05ms. Allocated memory is still 117.4MB. Free memory was 51.8MB in the beginning and 85.4MB in the end (delta: -33.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2025-04-24 16:06:58,868 INFO L158 Benchmark]: TraceAbstraction took 692.82ms. Allocated memory is still 117.4MB. Free memory was 84.6MB in the beginning and 53.5MB in the end (delta: 31.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2025-04-24 16:06:58,869 INFO L158 Benchmark]: Witness Printer took 107.71ms. Allocated memory is still 117.4MB. Free memory was 53.5MB in the beginning and 84.2MB in the end (delta: -30.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2025-04-24 16:06:58,870 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 510.76ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 55.6MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.45ms. Allocated memory is still 117.4MB. Free memory was 55.4MB in the beginning and 53.2MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.64ms. Allocated memory is still 117.4MB. Free memory was 53.2MB in the beginning and 52.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.05ms. Allocated memory is still 117.4MB. Free memory was 51.8MB in the beginning and 85.4MB in the end (delta: -33.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * TraceAbstraction took 692.82ms. Allocated memory is still 117.4MB. Free memory was 84.6MB in the beginning and 53.5MB in the end (delta: 31.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * Witness Printer took 107.71ms. Allocated memory is still 117.4MB. Free memory was 53.5MB in the beginning and 84.2MB in the end (delta: -30.7MB). Peak memory consumption was 27.3MB. 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: 2297, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 36, dependent conditional: 5, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 0, independent unconditional: 2261, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 0, independent unconditional: 2261, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2148, independent: 2117, independent conditional: 0, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2148, independent: 2107, independent conditional: 0, independent unconditional: 2107, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 41, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 2292, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2148, unknown conditional: 0, unknown unconditional: 2148] , Statistics on independence cache: Total cache size (in pairs): 2148, Positive cache size: 2117, Positive conditional cache size: 0, Positive unconditional cache size: 2117, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 144, Maximal queried relation: 0, Independence queries for same thread: 5, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 38, Number of trivial persistent sets: 33, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2148, independent: 2117, independent conditional: 0, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2297, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 36, dependent conditional: 5, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 144, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 0, independent unconditional: 2261, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2292, independent: 2261, independent conditional: 0, independent unconditional: 2261, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2148, independent: 2117, independent conditional: 0, independent unconditional: 2117, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2148, independent: 2107, independent conditional: 0, independent unconditional: 2107, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 41, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 2292, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2148, unknown conditional: 0, unknown unconditional: 2148] , Statistics on independence cache: Total cache size (in pairs): 2148, Positive cache size: 2117, Positive conditional cache size: 0, Positive unconditional cache size: 2117, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 144, Maximal queried relation: 0, Independence queries for same thread: 5 - CounterExampleResult [Line: 1123]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\at(arg, Pre)={0:0}, t=-5, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, arg={0:0}, t1=-4, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, v={-2:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={-2:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={-2:0}] [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={-2:0}] [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1133] 3 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1135] 3 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1133] 6 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1135] 6 return 0; [L1133] 5 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1135] 5 return 0; [L1140] 4 v[0] = 'Y' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1142] 4 return 0; [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={-2:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND TRUE 0 !expression VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(expression, Pre)=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1123] 0 reach_error() VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(expression, Pre)=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] - UnprovableResult [Line: 1162]: 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 11 procedures, 87 locations, 109 edges, 12 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, 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: 0, 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, 0.0s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 16:06:58,884 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