./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.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/28-race_reach_94-alloc_region_racing.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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 19:33:37,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 19:33:37,861 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 19:33:37,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 19:33:37,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 19:33:37,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 19:33:37,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 19:33:37,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 19:33:37,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 19:33:37,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 19:33:37,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 19:33:37,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 19:33:37,891 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 19:33:37,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 19:33:37,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 19:33:37,891 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 19:33:37,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 19:33:37,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 19:33:37,892 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 19:33:37,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 19:33:37,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 19:33:37,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 19:33:37,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 19:33:37,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 19:33:37,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 19:33:37,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 19:33:37,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 19:33:37,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 19:33:37,893 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 19:33:37,894 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 19:33:37,894 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 -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2025-04-24 19:33:38,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 19:33:38,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 19:33:38,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 19:33:38,138 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 19:33:38,138 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 19:33:38,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2025-04-24 19:33:39,411 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/589c3761e/757321cc20224572b27d9a71bf971fc5/FLAG81573e9dd [2025-04-24 19:33:39,692 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 19:33:39,692 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2025-04-24 19:33:39,705 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/589c3761e/757321cc20224572b27d9a71bf971fc5/FLAG81573e9dd [2025-04-24 19:33:40,412 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/589c3761e/757321cc20224572b27d9a71bf971fc5 [2025-04-24 19:33:40,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 19:33:40,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 19:33:40,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 19:33:40,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 19:33:40,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 19:33:40,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 07:33:40" (1/1) ... [2025-04-24 19:33:40,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f99e794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:40, skipping insertion in model container [2025-04-24 19:33:40,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 07:33:40" (1/1) ... [2025-04-24 19:33:40,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 19:33:40,832 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/28-race_reach_94-alloc_region_racing.i[58135,58148] [2025-04-24 19:33:40,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 19:33:40,868 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 19:33:40,939 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/28-race_reach_94-alloc_region_racing.i[58135,58148] [2025-04-24 19:33:40,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 19:33:41,013 INFO L204 MainTranslator]: Completed translation [2025-04-24 19:33:41,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41 WrapperNode [2025-04-24 19:33:41,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 19:33:41,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 19:33:41,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 19:33:41,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 19:33:41,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,053 INFO L138 Inliner]: procedures = 378, calls = 82, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 249 [2025-04-24 19:33:41,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 19:33:41,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 19:33:41,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 19:33:41,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 19:33:41,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,079 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 19:33:41,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 19:33:41,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 19:33:41,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 19:33:41,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (1/1) ... [2025-04-24 19:33:41,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 19:33:41,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 19:33:41,115 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 19:33:41,119 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 19:33:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 19:33:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-04-24 19:33:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 19:33:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-04-24 19:33:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-24 19:33:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-24 19:33:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 19:33:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 19:33:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 19:33:41,137 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 19:33:41,259 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 19:33:41,261 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 19:33:41,615 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 19:33:41,616 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 19:33:41,828 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 19:33:41,828 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2025-04-24 19:33:41,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 07:33:41 BoogieIcfgContainer [2025-04-24 19:33:41,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 19:33:41,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 19:33:41,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 19:33:41,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 19:33:41,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 07:33:40" (1/3) ... [2025-04-24 19:33:41,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5600d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 07:33:41, skipping insertion in model container [2025-04-24 19:33:41,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 07:33:41" (2/3) ... [2025-04-24 19:33:41,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5600d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 07:33:41, skipping insertion in model container [2025-04-24 19:33:41,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 07:33:41" (3/3) ... [2025-04-24 19:33:41,838 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2025-04-24 19:33:41,849 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 19:33:41,850 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_94-alloc_region_racing.i that has 2 procedures, 77 locations, 103 edges, 1 initial locations, 13 loop locations, and 2 error locations. [2025-04-24 19:33:41,851 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 19:33:41,896 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-24 19:33:41,930 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 19:33:41,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 19:33:41,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 19:33:41,935 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 19:33:41,936 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 19:33:42,005 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 19:33:42,018 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2025-04-24 19:33:42,025 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;@25690d40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 19:33:42,025 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 19:33:42,863 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 19:33:42,863 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 19:33:42,863 INFO L139 ounterexampleChecker]: Examining path program with hash 119440647, occurence #1 [2025-04-24 19:33:42,864 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 19:33:42,864 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 19:33:42,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 19:33:42,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1414843393, now seen corresponding path program 1 times [2025-04-24 19:33:42,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 19:33:42,871 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276656628] [2025-04-24 19:33:42,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 19:33:42,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 19:33:42,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-24 19:33:42,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-24 19:33:42,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 19:33:42,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 19:33:43,080 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 19:33:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 19:33:43,081 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276656628] [2025-04-24 19:33:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276656628] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 19:33:43,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 19:33:43,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 19:33:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514286821] [2025-04-24 19:33:43,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 19:33:43,086 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-24 19:33:43,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 19:33:43,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-24 19:33:43,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-24 19:33:43,101 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 19:33:43,102 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 19:33:43,103 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 19:33:43,103 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 19:33:51,320 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 19:33:51,320 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 19:33:51,320 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 19:33:51,320 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 19:33:51,320 INFO L139 ounterexampleChecker]: Examining path program with hash 814747653, occurence #1 [2025-04-24 19:33:51,321 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 19:33:51,321 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 19:33:51,321 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 19:33:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1021021275, now seen corresponding path program 1 times [2025-04-24 19:33:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 19:33:51,321 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785020606] [2025-04-24 19:33:51,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 19:33:51,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 19:33:51,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-24 19:33:51,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-24 19:33:51,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 19:33:51,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 19:33:51,376 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 19:33:51,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-24 19:33:51,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-24 19:33:51,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 19:33:51,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 19:33:51,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 19:33:51,445 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 19:33:51,446 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-24 19:33:51,448 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 19:33:51,453 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-24 19:33:51,454 INFO L320 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was UNSAFE (1/2) [2025-04-24 19:33:51,495 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 19:33:51,496 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 19:33:51,556 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 19:33:51,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 07:33:51 BasicIcfg [2025-04-24 19:33:51,556 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 19:33:51,557 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 19:33:51,557 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 19:33:51,557 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 19:33:51,557 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 07:33:41" (3/4) ... [2025-04-24 19:33:51,558 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-24 19:33:51,594 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 12. [2025-04-24 19:33:51,630 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-24 19:33:51,630 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-24 19:33:51,630 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 19:33:51,631 INFO L158 Benchmark]: Toolchain (without parser) took 11215.61ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 107.0MB in the beginning and 74.0MB in the end (delta: 33.0MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-04-24 19:33:51,631 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 19:33:51,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.35ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 64.2MB in the end (delta: 42.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-04-24 19:33:51,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.32ms. Allocated memory is still 142.6MB. Free memory was 64.2MB in the beginning and 61.0MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 19:33:51,632 INFO L158 Benchmark]: Boogie Preprocessor took 38.67ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 58.6MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 19:33:51,632 INFO L158 Benchmark]: RCFGBuilder took 735.57ms. Allocated memory is still 142.6MB. Free memory was 58.6MB in the beginning and 61.5MB in the end (delta: -2.9MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2025-04-24 19:33:51,633 INFO L158 Benchmark]: TraceAbstraction took 9724.81ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 60.7MB in the beginning and 83.8MB in the end (delta: -23.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2025-04-24 19:33:51,633 INFO L158 Benchmark]: Witness Printer took 73.51ms. Allocated memory is still 176.2MB. Free memory was 83.8MB in the beginning and 74.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 19:33:51,634 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 167.8MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.35ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 64.2MB in the end (delta: 42.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.32ms. Allocated memory is still 142.6MB. Free memory was 64.2MB in the beginning and 61.0MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.67ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 58.6MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 735.57ms. Allocated memory is still 142.6MB. Free memory was 58.6MB in the beginning and 61.5MB in the end (delta: -2.9MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9724.81ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 60.7MB in the beginning and 83.8MB in the end (delta: -23.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Witness Printer took 73.51ms. Allocated memory is still 176.2MB. Free memory was 83.8MB in the beginning and 74.0MB in the end (delta: 9.9MB). 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: 7654, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 577, dependent conditional: 479, dependent unconditional: 98, unknown: 5, unknown conditional: 2, unknown unconditional: 3] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7231, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 154, dependent conditional: 56, dependent unconditional: 98, unknown: 5, unknown conditional: 2, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 7231, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 154, dependent conditional: 56, dependent unconditional: 98, unknown: 5, unknown conditional: 2, unknown unconditional: 3] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7289, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 210, dependent conditional: 112, dependent unconditional: 98, unknown: 7, unknown conditional: 4, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7289, independent: 7072, independent conditional: 0, independent unconditional: 7072, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7289, independent: 7072, independent conditional: 0, independent unconditional: 7072, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3451, independent: 3348, independent conditional: 0, independent unconditional: 3348, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3451, independent: 3284, independent conditional: 0, independent unconditional: 3284, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 167, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 167, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8666, independent: 1011, independent conditional: 0, independent unconditional: 1011, dependent: 3980, dependent conditional: 0, dependent unconditional: 3980, unknown: 3674, unknown conditional: 0, unknown unconditional: 3674] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 7289, independent: 3724, independent conditional: 0, independent unconditional: 3724, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 3455, unknown conditional: 0, unknown unconditional: 3455] , Statistics on independence cache: Total cache size (in pairs): 3451, Positive cache size: 3348, Positive conditional cache size: 0, Positive unconditional cache size: 3348, Negative cache size: 100, Negative conditional cache size: 0, Negative unconditional cache size: 100, Unknown cache size: 3, Unknown conditional cache size: 0, Unknown unconditional cache size: 3, Eliminated conditions: 1010, Maximal queried relation: 1, Independence queries for same thread: 423, Persistent sets #1 benchmarks: Persistent set computation time: 8.0s, Number of persistent set computation: 640, Number of trivial persistent sets: 540, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6279, independent: 6178, independent conditional: 0, independent unconditional: 6178, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7654, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 577, dependent conditional: 479, dependent unconditional: 98, unknown: 5, unknown conditional: 2, unknown unconditional: 3] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7231, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 154, dependent conditional: 56, dependent unconditional: 98, unknown: 5, unknown conditional: 2, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 7231, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 154, dependent conditional: 56, dependent unconditional: 98, unknown: 5, unknown conditional: 2, unknown unconditional: 3] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7289, independent: 7072, independent conditional: 894, independent unconditional: 6178, dependent: 210, dependent conditional: 112, dependent unconditional: 98, unknown: 7, unknown conditional: 4, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7289, independent: 7072, independent conditional: 0, independent unconditional: 7072, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7289, independent: 7072, independent conditional: 0, independent unconditional: 7072, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3451, independent: 3348, independent conditional: 0, independent unconditional: 3348, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3451, independent: 3284, independent conditional: 0, independent unconditional: 3284, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 167, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 167, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8666, independent: 1011, independent conditional: 0, independent unconditional: 1011, dependent: 3980, dependent conditional: 0, dependent unconditional: 3980, unknown: 3674, unknown conditional: 0, unknown unconditional: 3674] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 7289, independent: 3724, independent conditional: 0, independent unconditional: 3724, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 3455, unknown conditional: 0, unknown unconditional: 3455] , Statistics on independence cache: Total cache size (in pairs): 3451, Positive cache size: 3348, Positive conditional cache size: 0, Positive unconditional cache size: 3348, Negative cache size: 100, Negative conditional cache size: 0, Negative unconditional cache size: 100, Unknown cache size: 3, Unknown conditional cache size: 0, Unknown unconditional cache size: 3, Eliminated conditions: 1010, Maximal queried relation: 1, Independence queries for same thread: 423 - CounterExampleResult [Line: 1235]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1240] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1241-L1244] 0 struct s { int datum; struct s *next; } *A; [L1253] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1254] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1267] 0 struct s *p; [L1268] 0 A = malloc(sizeof(struct s)) [L1269] EXPR 0 \read(*A) [L1269] CALL 0 init(A,3) [L1246] 0 p -> datum = x [L1247] 0 p -> next = ((void *)0) [L1269] RET 0 init(A,3) [L1270] 0 pthread_t t_ids[10000]; [L1270] 0 int i=0; VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=0, t_ids={14:0}] [L1270] COND TRUE 0 i<10000 [L1270] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=0, t_ids={14:0}] [L1256] 1 struct s *p = malloc(sizeof(struct s)); [L1257] CALL 1 init(p,7) [L1246] 1 p -> datum = x [L1247] 1 p -> next = ((void *)0) [L1257] RET 1 init(p,7) [L1259] CALL 1 insert(p, &A) [L1250] EXPR 1 \read(**list) [L1250] 1 p->next = *list [L1251] 1 *list = p [L1259] RET 1 insert(p, &A) [L1270] 0 i++ VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=1, t_ids={14:0}] [L1262] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1270] COND TRUE 0 i<10000 [L1270] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=1, t_ids={14:0}] [L1262] EXPR 1 p->datum [L1262] CALL 1 __VERIFIER_assert((p->datum) == 0) [L1235] COND TRUE 1 !(cond) VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, \at(cond, Pre)=0, __global_lock={3:0}, cond=0] [L1235] 1 reach_error() VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, \at(cond, Pre)=0, __global_lock={3:0}, cond=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t_funThread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 112 locations, 151 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 9.1s, 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: 2, 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, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 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 19:33:51,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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