./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 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 42d87675 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 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --- Real Ultimate output --- This is Ultimate 0.3.0-dev-42d8767-m [2025-04-25 02:50:13,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-25 02:50:13,743 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-25 02:50:13,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-25 02:50:13,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-25 02:50:13,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-25 02:50:13,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-25 02:50:13,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-25 02:50:13,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-25 02:50:13,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-25 02:50:13,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * Use SBE=true [2025-04-25 02:50:13,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-25 02:50:13,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-25 02:50:13,768 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-25 02:50:13,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 02:50:13,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 02:50:13,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-25 02:50:13,769 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-25 02:50:13,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-25 02:50:13,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-25 02:50:13,770 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-25 02:50:13,770 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-25 02:50:13,770 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> PERSISTENT_SETS [2025-04-25 02:50:14,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-25 02:50:14,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-25 02:50:14,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-25 02:50:14,012 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-25 02:50:14,012 INFO L274 PluginConnector]: CDTParser initialized [2025-04-25 02:50:14,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2025-04-25 02:50:15,301 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ddb268d4c/58ecac617313493db821b0e47b4ddf85/FLAG82b636d6c [2025-04-25 02:50:15,565 INFO L389 CDTParser]: Found 1 translation units. [2025-04-25 02:50:15,566 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2025-04-25 02:50:15,579 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ddb268d4c/58ecac617313493db821b0e47b4ddf85/FLAG82b636d6c [2025-04-25 02:50:16,352 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ddb268d4c/58ecac617313493db821b0e47b4ddf85 [2025-04-25 02:50:16,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-25 02:50:16,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-25 02:50:16,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-25 02:50:16,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-25 02:50:16,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-25 02:50:16,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6160f596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16, skipping insertion in model container [2025-04-25 02:50:16,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-25 02:50:16,710 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] [2025-04-25 02:50:16,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-25 02:50:16,746 INFO L200 MainTranslator]: Completed pre-run [2025-04-25 02:50:16,800 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] [2025-04-25 02:50:16,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-25 02:50:16,878 INFO L204 MainTranslator]: Completed translation [2025-04-25 02:50:16,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16 WrapperNode [2025-04-25 02:50:16,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-25 02:50:16,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-25 02:50:16,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-25 02:50:16,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-25 02:50:16,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,928 INFO L138 Inliner]: procedures = 378, calls = 82, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 249 [2025-04-25 02:50:16,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-25 02:50:16,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-25 02:50:16,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-25 02:50:16,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-25 02:50:16,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,949 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-25 02:50:16,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-25 02:50:16,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-25 02:50:16,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-25 02:50:16,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (1/1) ... [2025-04-25 02:50:16,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 02:50:16,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 02:50:16,983 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) [2025-04-25 02:50:16,984 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 [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-25 02:50:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-25 02:50:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-25 02:50:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-25 02:50:17,000 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-25 02:50:17,130 INFO L234 CfgBuilder]: Building ICFG [2025-04-25 02:50:17,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-25 02:50:17,488 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-25 02:50:17,488 INFO L283 CfgBuilder]: Performing block encoding [2025-04-25 02:50:17,642 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-25 02:50:17,642 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2025-04-25 02:50:17,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 02:50:17 BoogieIcfgContainer [2025-04-25 02:50:17,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-25 02:50:17,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-25 02:50:17,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-25 02:50:17,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-25 02:50:17,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.04 02:50:16" (1/3) ... [2025-04-25 02:50:17,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4588d268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.04 02:50:17, skipping insertion in model container [2025-04-25 02:50:17,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:50:16" (2/3) ... [2025-04-25 02:50:17,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4588d268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.04 02:50:17, skipping insertion in model container [2025-04-25 02:50:17,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 02:50:17" (3/3) ... [2025-04-25 02:50:17,649 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2025-04-25 02:50:17,660 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-25 02:50:17,661 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. [2025-04-25 02:50:17,662 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-25 02:50:17,713 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-25 02:50:17,750 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-25 02:50:17,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-25 02:50:17,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 02:50:17,756 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) [2025-04-25 02:50:17,758 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 [2025-04-25 02:50:17,832 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-25 02:50:17,840 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2025-04-25 02:50:17,849 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;@1f44e01b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-25 02:50:17,849 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-25 02:50:21,367 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-25 02:50:21,370 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 02:50:21,371 INFO L85 PathProgramCache]: Analyzing trace with hash -277786947, now seen corresponding path program 1 times [2025-04-25 02:50:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 02:50:21,376 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891700327] [2025-04-25 02:50:21,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-25 02:50:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 02:50:21,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-25 02:50:21,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-25 02:50:21,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 02:50:21,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 02:50:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 02:50:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 02:50:21,596 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891700327] [2025-04-25 02:50:21,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891700327] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 02:50:21,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 02:50:21,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-25 02:50:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441003140] [2025-04-25 02:50:21,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 02:50:21,600 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-25 02:50:21,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 02:50:21,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-25 02:50:21,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-25 02:50:21,615 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:50:21,616 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 02:50:21,617 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2025-04-25 02:50:21,617 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:50:38,529 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:50:38,530 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-25 02:50:38,530 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-25 02:50:38,530 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 02:50:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1438045641, now seen corresponding path program 1 times [2025-04-25 02:50:38,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 02:50:38,530 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65408412] [2025-04-25 02:50:38,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-25 02:50:38,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 02:50:38,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-25 02:50:38,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-25 02:50:38,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 02:50:38,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-25 02:50:38,624 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-25 02:50:38,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-25 02:50:38,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-25 02:50:38,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 02:50:38,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-25 02:50:38,716 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-25 02:50:38,718 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-25 02:50:38,719 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-25 02:50:38,721 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-25 02:50:38,726 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-25 02:50:38,727 INFO L320 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was UNSAFE (1/2) [2025-04-25 02:50:38,764 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-25 02:50:38,765 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-25 02:50:38,847 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 [2025-04-25 02:50:38,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.04 02:50:38 BasicIcfg [2025-04-25 02:50:38,847 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-25 02:50:38,848 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-25 02:50:38,848 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-25 02:50:38,848 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-25 02:50:38,849 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 02:50:17" (3/4) ... [2025-04-25 02:50:38,850 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-25 02:50:38,897 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 12. [2025-04-25 02:50:38,947 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-25 02:50:38,947 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-25 02:50:38,947 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-25 02:50:38,948 INFO L158 Benchmark]: Toolchain (without parser) took 22593.35ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 80.7MB in the end (delta: 29.5MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2025-04-25 02:50:38,948 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 201.3MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-25 02:50:38,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.45ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 67.7MB in the end (delta: 42.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-04-25 02:50:38,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.27ms. Allocated memory is still 142.6MB. Free memory was 67.7MB in the beginning and 64.3MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-25 02:50:38,949 INFO L158 Benchmark]: Boogie Preprocessor took 30.14ms. Allocated memory is still 142.6MB. Free memory was 64.3MB in the beginning and 62.1MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-25 02:50:38,949 INFO L158 Benchmark]: RCFGBuilder took 682.74ms. Allocated memory is still 142.6MB. Free memory was 62.1MB in the beginning and 64.9MB in the end (delta: -2.8MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2025-04-25 02:50:38,949 INFO L158 Benchmark]: TraceAbstraction took 21203.60ms. Allocated memory is still 142.6MB. Free memory was 64.1MB in the beginning and 88.9MB in the end (delta: -24.8MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2025-04-25 02:50:38,949 INFO L158 Benchmark]: Witness Printer took 99.44ms. Allocated memory is still 142.6MB. Free memory was 88.9MB in the beginning and 80.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-25 02:50:38,950 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 201.3MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.45ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 67.7MB in the end (delta: 42.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.27ms. Allocated memory is still 142.6MB. Free memory was 67.7MB in the beginning and 64.3MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.14ms. Allocated memory is still 142.6MB. Free memory was 64.3MB in the beginning and 62.1MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 682.74ms. Allocated memory is still 142.6MB. Free memory was 62.1MB in the beginning and 64.9MB in the end (delta: -2.8MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * TraceAbstraction took 21203.60ms. Allocated memory is still 142.6MB. Free memory was 64.1MB in the beginning and 88.9MB in the end (delta: -24.8MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Witness Printer took 99.44ms. Allocated memory is still 142.6MB. Free memory was 88.9MB in the beginning and 80.7MB in the end (delta: 8.2MB). 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: 6410, independent: 6300, independent conditional: 0, independent unconditional: 6300, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6410, independent: 6300, independent conditional: 0, independent unconditional: 6300, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3470, independent: 3360, independent conditional: 0, independent unconditional: 3360, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3470, independent: 3302, independent conditional: 0, independent unconditional: 3302, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 168, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 168, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , SemanticIndependenceRelation.Query Time [ms]: [ total: 20027, independent: 171, independent conditional: 0, independent unconditional: 171, dependent: 467, dependent conditional: 0, dependent unconditional: 467, unknown: 19389, unknown conditional: 0, unknown unconditional: 19389] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 6410, independent: 2940, independent conditional: 0, independent unconditional: 2940, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3470, unknown conditional: 0, unknown unconditional: 3470] , Statistics on independence cache: Total cache size (in pairs): 3470, Positive cache size: 3360, Positive conditional cache size: 0, Positive unconditional cache size: 3360, Negative cache size: 92, Negative conditional cache size: 0, Negative unconditional cache size: 92, Unknown cache size: 18, Unknown conditional cache size: 0, Unknown unconditional cache size: 18, Independence queries for same thread: 0, Persistent sets #1 benchmarks: Persistent set computation time: 20.2s, Number of persistent set computation: 519, Number of trivial persistent sets: 280, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 6410, independent: 6300, independent conditional: 0, independent unconditional: 6300, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6410, independent: 6300, independent conditional: 0, independent unconditional: 6300, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3470, independent: 3360, independent conditional: 0, independent unconditional: 3360, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3470, independent: 3302, independent conditional: 0, independent unconditional: 3302, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 168, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 168, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , SemanticIndependenceRelation.Query Time [ms]: [ total: 20027, independent: 171, independent conditional: 0, independent unconditional: 171, dependent: 467, dependent conditional: 0, dependent unconditional: 467, unknown: 19389, unknown conditional: 0, unknown unconditional: 19389] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 6410, independent: 2940, independent conditional: 0, independent unconditional: 2940, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3470, unknown conditional: 0, unknown unconditional: 3470] , Statistics on independence cache: Total cache size (in pairs): 3470, Positive cache size: 3360, Positive conditional cache size: 0, Positive unconditional cache size: 3360, Negative cache size: 92, Negative conditional cache size: 0, Negative unconditional cache size: 92, Unknown cache size: 18, Unknown conditional cache size: 0, Unknown unconditional cache size: 18, Independence queries for same thread: 0 - 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: 20.9s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 20.4s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 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: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-25 02:50:38,967 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