./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 01849734 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-complex/bounded_buffer.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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-0184973-m [2025-04-24 16:30:36,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 16:30:36,989 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 16:30:36,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 16:30:36,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 16:30:37,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 16:30:37,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 16:30:37,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 16:30:37,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 16:30:37,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 16:30:37,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 16:30:37,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 16:30:37,014 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 16:30:37,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 16:30:37,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 16:30:37,015 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 16:30:37,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 16:30:37,015 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 16:30:37,016 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 16:30:37,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:30:37,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:30:37,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 16:30:37,017 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 16:30:37,017 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 -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2025-04-24 16:30:37,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 16:30:37,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 16:30:37,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 16:30:37,287 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 16:30:37,287 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 16:30:37,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-04-24 16:30:38,566 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/d50ff2e5b/7d6f654b6fe44ba290bc90d142f22b2d/FLAG35175f489 [2025-04-24 16:30:38,811 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 16:30:38,815 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-04-24 16:30:38,838 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/d50ff2e5b/7d6f654b6fe44ba290bc90d142f22b2d/FLAG35175f489 [2025-04-24 16:30:39,616 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/d50ff2e5b/7d6f654b6fe44ba290bc90d142f22b2d [2025-04-24 16:30:39,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 16:30:39,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 16:30:39,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 16:30:39,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 16:30:39,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 16:30:39,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:30:39" (1/1) ... [2025-04-24 16:30:39,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693522bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:39, skipping insertion in model container [2025-04-24 16:30:39,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:30:39" (1/1) ... [2025-04-24 16:30:39,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 16:30:40,106 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2025-04-24 16:30:40,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:30:40,143 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 16:30:40,223 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2025-04-24 16:30:40,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:30:40,311 INFO L204 MainTranslator]: Completed translation [2025-04-24 16:30:40,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40 WrapperNode [2025-04-24 16:30:40,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 16:30:40,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 16:30:40,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 16:30:40,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 16:30:40,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,374 INFO L138 Inliner]: procedures = 429, calls = 134, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 450 [2025-04-24 16:30:40,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 16:30:40,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 16:30:40,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 16:30:40,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 16:30:40,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,431 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 16:30:40,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 16:30:40,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 16:30:40,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 16:30:40,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (1/1) ... [2025-04-24 16:30:40,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:30:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:30:40,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 16:30:40,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 16:30:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-04-24 16:30:40,496 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 16:30:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-04-24 16:30:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 16:30:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 16:30:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 16:30:40,499 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 16:30:40,644 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 16:30:40,645 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 16:30:41,251 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 16:30:41,252 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 16:30:41,667 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 16:30:41,668 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2025-04-24 16:30:41,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:30:41 BoogieIcfgContainer [2025-04-24 16:30:41,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 16:30:41,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 16:30:41,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 16:30:41,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 16:30:41,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 04:30:39" (1/3) ... [2025-04-24 16:30:41,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b46460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:30:41, skipping insertion in model container [2025-04-24 16:30:41,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:30:40" (2/3) ... [2025-04-24 16:30:41,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b46460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:30:41, skipping insertion in model container [2025-04-24 16:30:41,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:30:41" (3/3) ... [2025-04-24 16:30:41,677 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-04-24 16:30:41,688 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 16:30:41,690 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 81 locations, 110 edges, 1 initial locations, 13 loop locations, and 3 error locations. [2025-04-24 16:30:41,691 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 16:30:41,777 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-24 16:30:41,811 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:30:41,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 16:30:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:30:41,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 16:30:41,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 16:30:41,909 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 16:30:41,923 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == producer_routineThread1of1ForFork0 ======== [2025-04-24 16:30:41,931 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;@704f1c2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:30:41,931 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 16:30:44,257 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2025-04-24 16:30:44,259 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:30:44,259 INFO L139 ounterexampleChecker]: Examining path program with hash 1058383306, occurence #1 [2025-04-24 16:30:44,259 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:30:44,259 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:30:44,263 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:30:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1481900307, now seen corresponding path program 1 times [2025-04-24 16:30:44,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:30:44,269 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53152042] [2025-04-24 16:30:44,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:30:44,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:30:44,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-24 16:30:44,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-24 16:30:44,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:30:44,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:30:44,629 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 16:30:44,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:30:44,629 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53152042] [2025-04-24 16:30:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53152042] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:30:44,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:30:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 16:30:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018852502] [2025-04-24 16:30:44,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:30:44,634 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 16:30:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:30:44,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 16:30:44,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 16:30:44,649 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:30:44,650 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:30:44,651 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16:30:44,651 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:30:51,875 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:30:51,876 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 16:30:51,876 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2025-04-24 16:30:51,876 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:30:51,877 INFO L139 ounterexampleChecker]: Examining path program with hash -655336210, occurence #1 [2025-04-24 16:30:51,878 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:30:51,878 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:30:51,878 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:30:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1225798490, now seen corresponding path program 1 times [2025-04-24 16:30:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:30:51,878 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318970703] [2025-04-24 16:30:51,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:30:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:30:51,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-24 16:30:51,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-24 16:30:51,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:30:51,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:30:52,098 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 16:30:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:30:52,099 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318970703] [2025-04-24 16:30:52,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318970703] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:30:52,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:30:52,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 16:30:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054202736] [2025-04-24 16:30:52,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:30:52,100 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 16:30:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:30:52,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 16:30:52,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-24 16:30:52,101 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:30:52,101 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:30:52,102 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 16:30:52,102 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:30:52,102 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:30:56,423 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:30:56,423 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:30:56,423 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 16:30:56,423 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2025-04-24 16:30:56,423 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:30:56,423 INFO L139 ounterexampleChecker]: Examining path program with hash 1772211047, occurence #1 [2025-04-24 16:30:56,424 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:30:56,424 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:30:56,424 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:30:56,424 INFO L85 PathProgramCache]: Analyzing trace with hash 654955265, now seen corresponding path program 1 times [2025-04-24 16:30:56,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:30:56,424 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637106647] [2025-04-24 16:30:56,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:30:56,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:30:56,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-24 16:30:56,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-24 16:30:56,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:30:56,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-04-24 16:30:56,652 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910792816] [2025-04-24 16:30:56,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:30:56,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:30:56,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:30:56,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:30:56,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-24 16:30:56,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-24 16:30:59,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-24 16:30:59,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:30:59,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 16:30:59,421 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 16:30:59,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-24 16:31:04,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-24 16:31:04,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:31:04,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 16:31:04,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 16:31:04,631 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 16:31:04,632 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 1 remaining) [2025-04-24 16:31:04,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-24 16:31:04,834 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-04-24 16:31:04,838 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-24 16:31:04,839 INFO L320 ceAbstractionStarter]: Result for error location producer_routineThread1of1ForFork0 was UNSAFE (1/3) [2025-04-24 16:31:04,892 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 16:31:04,893 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 16:31:05,095 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forcibly destroying the process [2025-04-24 16:31:05,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-24 16:31:05,096 WARN L445 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Process already dead, possible race condition [2025-04-24 16:31:05,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 04:31:05 BasicIcfg [2025-04-24 16:31:05,097 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 16:31:05,097 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 16:31:05,097 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 16:31:05,097 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 16:31:05,098 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:30:41" (3/4) ... [2025-04-24 16:31:05,100 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-24 16:31:05,100 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 16:31:05,101 INFO L158 Benchmark]: Toolchain (without parser) took 25481.50ms. Allocated memory was 83.9MB in the beginning and 159.4MB in the end (delta: 75.5MB). Free memory was 56.2MB in the beginning and 42.6MB in the end (delta: 13.6MB). Peak memory consumption was 95.3MB. Max. memory is 16.1GB. [2025-04-24 16:31:05,101 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:31:05,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.69ms. Allocated memory is still 83.9MB. Free memory was 55.9MB in the beginning and 36.3MB in the end (delta: 19.6MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2025-04-24 16:31:05,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.13ms. Allocated memory is still 83.9MB. Free memory was 36.3MB in the beginning and 31.3MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:31:05,101 INFO L158 Benchmark]: Boogie Preprocessor took 76.78ms. Allocated memory is still 83.9MB. Free memory was 31.3MB in the beginning and 50.6MB in the end (delta: -19.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2025-04-24 16:31:05,102 INFO L158 Benchmark]: RCFGBuilder took 1216.58ms. Allocated memory was 83.9MB in the beginning and 159.4MB in the end (delta: 75.5MB). Free memory was 50.6MB in the beginning and 100.1MB in the end (delta: -49.5MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2025-04-24 16:31:05,102 INFO L158 Benchmark]: TraceAbstraction took 23426.57ms. Allocated memory is still 159.4MB. Free memory was 99.6MB in the beginning and 42.6MB in the end (delta: 57.0MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2025-04-24 16:31:05,102 INFO L158 Benchmark]: Witness Printer took 2.94ms. Allocated memory is still 159.4MB. Free memory was 42.6MB in the beginning and 42.6MB in the end (delta: 5.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:31:05,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.69ms. Allocated memory is still 83.9MB. Free memory was 55.9MB in the beginning and 36.3MB in the end (delta: 19.6MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.13ms. Allocated memory is still 83.9MB. Free memory was 36.3MB in the beginning and 31.3MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 76.78ms. Allocated memory is still 83.9MB. Free memory was 31.3MB in the beginning and 50.6MB in the end (delta: -19.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * RCFGBuilder took 1216.58ms. Allocated memory was 83.9MB in the beginning and 159.4MB in the end (delta: 75.5MB). Free memory was 50.6MB in the beginning and 100.1MB in the end (delta: -49.5MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * TraceAbstraction took 23426.57ms. Allocated memory is still 159.4MB. Free memory was 99.6MB in the beginning and 42.6MB in the end (delta: 57.0MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * Witness Printer took 2.94ms. Allocated memory is still 159.4MB. Free memory was 42.6MB in the beginning and 42.6MB in the end (delta: 5.9kB). There was no memory consumed. 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: 1257, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 65, dependent conditional: 51, dependent unconditional: 14, unknown: 19, unknown conditional: 10, unknown unconditional: 9] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1206, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 19, unknown conditional: 10, unknown unconditional: 9] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1206, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 19, unknown conditional: 10, unknown unconditional: 9] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1217, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 30, unknown conditional: 21, unknown unconditional: 9] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1217, independent: 1173, independent conditional: 0, independent unconditional: 1173, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 30, unknown conditional: 8, unknown unconditional: 22] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1217, independent: 1173, independent conditional: 0, independent unconditional: 1173, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 30, unknown conditional: 8, unknown unconditional: 22] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1080, independent: 1051, independent conditional: 0, independent unconditional: 1051, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 15, unknown conditional: 6, unknown unconditional: 9] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1080, independent: 1047, independent conditional: 0, independent unconditional: 1047, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 33, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 15, unknown conditional: 6, unknown unconditional: 9] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 33, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 15, unknown conditional: 6, unknown unconditional: 9] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13092, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 245, dependent conditional: 0, dependent unconditional: 245, unknown: 12836, unknown conditional: 5948, unknown unconditional: 6889] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 1217, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1095, unknown conditional: 8, unknown unconditional: 1087] , Statistics on independence cache: Total cache size (in pairs): 1080, Positive cache size: 1051, Positive conditional cache size: 0, Positive unconditional cache size: 1051, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 15, Unknown conditional cache size: 6, Unknown unconditional cache size: 9, Eliminated conditions: 95, Maximal queried relation: 2, Independence queries for same thread: 51, Persistent sets #1 benchmarks: Persistent set computation time: 7.2s, Number of persistent set computation: 21, Number of trivial persistent sets: 17, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1114, independent: 1091, independent conditional: 0, independent unconditional: 1091, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1257, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 65, dependent conditional: 51, dependent unconditional: 14, unknown: 19, unknown conditional: 10, unknown unconditional: 9] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1206, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 19, unknown conditional: 10, unknown unconditional: 9] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1206, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 19, unknown conditional: 10, unknown unconditional: 9] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1217, independent: 1173, independent conditional: 82, independent unconditional: 1091, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 30, unknown conditional: 21, unknown unconditional: 9] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1217, independent: 1173, independent conditional: 0, independent unconditional: 1173, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 30, unknown conditional: 8, unknown unconditional: 22] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1217, independent: 1173, independent conditional: 0, independent unconditional: 1173, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 30, unknown conditional: 8, unknown unconditional: 22] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1080, independent: 1051, independent conditional: 0, independent unconditional: 1051, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 15, unknown conditional: 6, unknown unconditional: 9] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1080, independent: 1047, independent conditional: 0, independent unconditional: 1047, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 33, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 15, unknown conditional: 6, unknown unconditional: 9] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 33, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 15, unknown conditional: 6, unknown unconditional: 9] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13092, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 245, dependent conditional: 0, dependent unconditional: 245, unknown: 12836, unknown conditional: 5948, unknown unconditional: 6889] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 1217, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1095, unknown conditional: 8, unknown unconditional: 1087] , Statistics on independence cache: Total cache size (in pairs): 1080, Positive cache size: 1051, Positive conditional cache size: 0, Positive unconditional cache size: 1051, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 15, Unknown conditional cache size: 6, Unknown unconditional cache size: 9, Eliminated conditions: 95, Maximal queried relation: 2, Independence queries for same thread: 51 - UnprovableResult [Line: 1636]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: overapproximation of fflush at line 1636. Possible FailurePath: [L1663] 0 thread_t producers[2]; [L1664] 0 thread_t consumers[2]; [L1665] 0 int i; [L1666] 0 bounded_buf_t buffer; [L1667] CALL 0 bounded_buf_init(&buffer, 3) [L1452] 0 int status = 0; [L1453] COND FALSE 0 !(bbuf == ((void *)0)) [L1454] 0 bbuf->valid = 0xACDEFA [L1455] 0 status = pthread_mutex_init(&bbuf->mutex, ((void *)0)) [L1456] COND FALSE 0 !(status != 0) [L1457] 0 status = pthread_cond_init(&bbuf->not_full, ((void *)0)) [L1458] COND FALSE 0 !(status != 0) [L1463] 0 status = pthread_cond_init(&bbuf->not_empty, ((void *)0)) [L1464] COND FALSE 0 !(status != 0) [L1470] 0 bbuf->item_num = 0 [L1471] 0 bbuf->max_size = sz [L1472] 0 bbuf->head = 0 [L1473] 0 bbuf->rear = 0 [L1474] EXPR, FCALL 0 calloc( sz, sizeof(void*) ) [L1474] 0 bbuf->buf = calloc( sz, sizeof(void*) ) [L1475] EXPR 0 bbuf->buf [L1475] COND FALSE 0 !(bbuf->buf == ((void *)0)) [L1482] 0 bbuf->head = 0 [L1483] 0 bbuf->rear = 0 [L1484] 0 bbuf->p_wait = 0 [L1485] 0 bbuf->c_wait = 0 [L1486] 0 return 0; [L1667] RET 0 bounded_buf_init(&buffer, 3) [L1668] 0 i = 0 VAL [buffer={5:0}, consumers={7:0}, i=0, producers={6:0}] [L1668] COND TRUE 0 i < 2 [L1670] 0 producers[i].id = i [L1671] 0 producers[i].bbuf = &buffer [L1672] FCALL, FORK 0 pthread_create(&producers[i].pid, ((void *)0), producer_routine, (void*)&producers[i]) VAL [buffer={5:0}, consumers={7:0}, i=0, producers={6:0}] [L1623] 1 thread_t * thread = (thread_t*) arg; [L1624] 1 int i, temp; [L1625] 1 int ch; [L1626] 1 int status = 0; [L1627] 1 i = 0 VAL [\at(arg, Pre)={6:0}, arg={6:0}, i=0, status=0, thread={6:0}] [L1668] 0 i++ VAL [buffer={5:0}, consumers={7:0}, i=1, producers={6:0}] [L1627] COND TRUE 1 i < 4 [L1629] 1 ch = __VERIFIER_nondet_int() [L1630] 1 temp = ch [L1631] EXPR 1 thread->bbuf [L1631] CALL, EXPR 1 bounded_buf_put(thread->bbuf, (void*)((int)temp)) [L1526] 1 int status = 0, status1 = 0, status2 = 0; [L1527] 1 bbuf == ((void *)0) || bbuf->valid != 0xACDEFA [L1527] EXPR 1 bbuf->valid [L1527] 1 bbuf == ((void *)0) || bbuf->valid != 0xACDEFA VAL [\at(bbuf, Pre)={5:0}, \at(item, Pre)={0:-2147483648}, bbuf={5:0}, item={0:-2147483648}, status1=0, status2=0, status=0] [L1527] COND FALSE 1 !(bbuf == ((void *)0) || bbuf->valid != 0xACDEFA) [L1529] 1 status = pthread_mutex_lock(&bbuf->mutex) [L1531] COND FALSE 1 !(status != 0) [L1532] EXPR 1 bbuf->rear [L1532] EXPR 1 bbuf->max_size [L1532] EXPR 1 bbuf->head VAL [\at(bbuf, Pre)={5:0}, \at(item, Pre)={0:-2147483648}, bbuf={5:0}, item={0:-2147483648}, status1=0, status2=0, status=0] [L1532] COND FALSE 1 !((bbuf->rear + 1)% bbuf->max_size == bbuf->head) [L1542] COND TRUE 1 status == 0 [L1543] EXPR 1 bbuf->buf [L1543] EXPR 1 bbuf->rear [L1543] 1 bbuf->buf[bbuf->rear]= item [L1544] EXPR 1 bbuf->rear [L1544] EXPR 1 bbuf->max_size [L1544] 1 bbuf->rear = (bbuf->rear+1)% (bbuf->max_size) [L1545] EXPR 1 bbuf->c_wait [L1545] COND FALSE 1 !(bbuf->c_wait > 0) [L1551] 1 status2 = pthread_mutex_unlock(&bbuf->mutex) [L1552] 1 return (status == 0)? status2 : status; VAL [\at(bbuf, Pre)={5:0}, \at(item, Pre)={0:-2147483648}, \result=0, bbuf={5:0}, item={0:-2147483648}, status1=0, status2=0, status=0] [L1631] RET, EXPR 1 bounded_buf_put(thread->bbuf, (void*)((int)temp)) [L1631] 1 status = bounded_buf_put(thread->bbuf, (void*)((int)temp)) [L1632] COND FALSE 1 !(status != 0) VAL [\at(arg, Pre)={6:0}, arg={6:0}, ch=-2147483648, i=0, status=0, temp=-2147483648, thread={6:0}] [L1668] COND TRUE 0 i < 2 [L1670] 0 producers[i].id = i [L1671] 0 producers[i].bbuf = &buffer [L1672] FCALL, FORK 0 pthread_create(&producers[i].pid, ((void *)0), producer_routine, (void*)&producers[i]) VAL [buffer={5:0}, consumers={7:0}, i=1, producers={6:0}] [L1636] 1 fflush(stdout) VAL [\at(arg, Pre)={6:0}, arg={6:0}, ch=-2147483648, i=0, status=0, temp=-2147483648, thread={6:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: producer_routineThread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 133 locations, 184 edges, 8 error locations. Started 1 CEGAR loops. OverallTime: 22.9s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 13.9s, 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: 8, 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, 2.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces [2025-04-24 16:31:05,118 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-0184973-m [2025-04-24 16:31:06,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 16:31:06,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-04-24 16:31:06,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 16:31:06,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 16:31:06,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 16:31:06,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 16:31:06,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 16:31:06,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 16:31:06,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 16:31:06,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 16:31:06,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 16:31:06,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 16:31:06,993 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:31:06,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:31:06,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:31:06,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 16:31:06,994 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 16:31:06,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 16:31:06,995 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-24 16:31:06,995 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 16:31:06,995 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-24 16:31:06,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 16:31:06,995 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 16:31:06,995 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 16:31:06,995 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 -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2025-04-24 16:31:07,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 16:31:07,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 16:31:07,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 16:31:07,234 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 16:31:07,234 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 16:31:07,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-04-24 16:31:08,460 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e8758b52d/86db4ab04e6f42adaa03fed1eec0b96a/FLAG8fd956254 [2025-04-24 16:31:08,688 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 16:31:08,689 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-04-24 16:31:08,707 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e8758b52d/86db4ab04e6f42adaa03fed1eec0b96a/FLAG8fd956254 [2025-04-24 16:31:09,460 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e8758b52d/86db4ab04e6f42adaa03fed1eec0b96a [2025-04-24 16:31:09,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 16:31:09,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 16:31:09,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 16:31:09,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 16:31:09,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 16:31:09,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:31:09" (1/1) ... [2025-04-24 16:31:09,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2683aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:09, skipping insertion in model container [2025-04-24 16:31:09,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:31:09" (1/1) ... [2025-04-24 16:31:09,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 16:31:09,895 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2025-04-24 16:31:09,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:31:09,952 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 16:31:10,013 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2025-04-24 16:31:10,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:31:10,118 INFO L204 MainTranslator]: Completed translation [2025-04-24 16:31:10,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10 WrapperNode [2025-04-24 16:31:10,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 16:31:10,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 16:31:10,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 16:31:10,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 16:31:10,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,186 INFO L138 Inliner]: procedures = 432, calls = 134, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 446 [2025-04-24 16:31:10,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 16:31:10,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 16:31:10,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 16:31:10,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 16:31:10,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,208 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 16:31:10,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 16:31:10,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 16:31:10,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 16:31:10,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (1/1) ... [2025-04-24 16:31:10,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:31:10,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:31:10,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 16:31:10,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 16:31:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-04-24 16:31:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-04-24 16:31:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 16:31:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-04-24 16:31:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 16:31:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 16:31:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-04-24 16:31:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-04-24 16:31:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 16:31:10,302 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 16:31:10,448 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 16:31:10,450 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 16:31:11,209 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 16:31:11,209 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 16:31:11,535 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 16:31:11,536 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2025-04-24 16:31:11,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:31:11 BoogieIcfgContainer [2025-04-24 16:31:11,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 16:31:11,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 16:31:11,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 16:31:11,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 16:31:11,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 04:31:09" (1/3) ... [2025-04-24 16:31:11,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65af207d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:31:11, skipping insertion in model container [2025-04-24 16:31:11,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:31:10" (2/3) ... [2025-04-24 16:31:11,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65af207d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:31:11, skipping insertion in model container [2025-04-24 16:31:11,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:31:11" (3/3) ... [2025-04-24 16:31:11,544 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-04-24 16:31:11,555 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 16:31:11,556 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 81 locations, 110 edges, 1 initial locations, 13 loop locations, and 3 error locations. [2025-04-24 16:31:11,557 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 16:31:11,667 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-24 16:31:11,701 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:31:11,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 16:31:11,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:31:11,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 16:31:11,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 16:31:11,800 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 16:31:11,811 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 16:31:11,816 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;@8b4ce45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:31:11,819 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-24 16:31:13,209 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:31:13,210 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:31:13,210 INFO L139 ounterexampleChecker]: Examining path program with hash -1636271715, occurence #1 [2025-04-24 16:31:13,210 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:31:13,210 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:31:13,213 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:31:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 549486852, now seen corresponding path program 1 times [2025-04-24 16:31:13,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 16:31:13,220 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050580468] [2025-04-24 16:31:13,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:31:13,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:31:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:31:13,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:31:13,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-24 16:31:13,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-24 16:31:13,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-24 16:31:13,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:31:13,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:31:13,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-24 16:31:13,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:31:13,444 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 16:31:13,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:31:13,445 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 16:31:13,445 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050580468] [2025-04-24 16:31:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050580468] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:31:13,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:31:13,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 16:31:13,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44388479] [2025-04-24 16:31:13,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:31:13,449 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 16:31:13,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 16:31:13,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 16:31:13,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 16:31:13,464 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:13,465 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:31:13,466 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 16:31:13,466 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:15,860 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:31:19,875 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:31:24,732 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:24,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-24 16:31:24,937 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:31:24,937 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:31:24,937 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:31:24,938 INFO L139 ounterexampleChecker]: Examining path program with hash 1207835333, occurence #1 [2025-04-24 16:31:24,938 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:31:24,938 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:31:24,938 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:31:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash 688855259, now seen corresponding path program 1 times [2025-04-24 16:31:24,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 16:31:24,938 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046396778] [2025-04-24 16:31:24,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:31:24,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:31:24,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:31:24,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:31:24,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-24 16:31:25,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 16:31:25,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 16:31:25,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:31:25,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:31:25,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-24 16:31:25,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:31:25,180 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 16:31:25,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:31:25,180 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 16:31:25,180 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046396778] [2025-04-24 16:31:25,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046396778] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:31:25,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:31:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 16:31:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485304907] [2025-04-24 16:31:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:31:25,181 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 16:31:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 16:31:25,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 16:31:25,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 16:31:25,182 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:25,182 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:31:25,182 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:31:25,182 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:25,182 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:29,197 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:31:33,202 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:31:37,048 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:31:42,836 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:42,837 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:31:42,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-24 16:31:43,037 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:31:43,037 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:31:43,038 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:31:43,038 INFO L139 ounterexampleChecker]: Examining path program with hash -864696508, occurence #1 [2025-04-24 16:31:43,038 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:31:43,038 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:31:43,038 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:31:43,038 INFO L85 PathProgramCache]: Analyzing trace with hash 688891777, now seen corresponding path program 1 times [2025-04-24 16:31:43,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 16:31:43,038 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88869594] [2025-04-24 16:31:43,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:31:43,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:31:43,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:31:43,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:31:43,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-24 16:31:43,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 16:31:43,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 16:31:43,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:31:43,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:31:43,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-24 16:31:43,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:31:43,241 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 16:31:43,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:31:43,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 16:31:43,241 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88869594] [2025-04-24 16:31:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88869594] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:31:43,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:31:43,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 16:31:43,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167658256] [2025-04-24 16:31:43,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:31:43,241 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 16:31:43,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 16:31:43,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 16:31:43,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 16:31:43,242 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:43,242 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:31:43,242 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 16:31:43,242 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:43,242 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:31:43,242 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:47,251 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:31:48,575 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:48,576 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:31:48,576 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:48,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-24 16:31:48,777 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:31:48,777 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:31:48,777 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:31:48,777 INFO L139 ounterexampleChecker]: Examining path program with hash -861525162, occurence #1 [2025-04-24 16:31:48,777 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:31:48,777 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:31:48,778 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:31:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash -472980834, now seen corresponding path program 1 times [2025-04-24 16:31:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 16:31:48,778 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723017658] [2025-04-24 16:31:48,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:31:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:31:48,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:31:48,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:31:48,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-24 16:31:48,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-24 16:31:48,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-24 16:31:48,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:31:48,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:31:48,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-24 16:31:48,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:31:48,959 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 16:31:48,960 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:31:48,960 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 16:31:48,960 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723017658] [2025-04-24 16:31:48,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723017658] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:31:48,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:31:48,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 16:31:48,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609786521] [2025-04-24 16:31:48,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:31:48,960 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 16:31:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 16:31:48,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 16:31:48,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 16:31:48,961 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:48,961 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:31:48,961 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 16:31:48,961 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:48,961 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:31:48,961 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:31:48,961 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:31:52,969 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:31:56,968 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:32:00,268 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:00,268 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:00,268 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:00,269 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:00,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-24 16:32:00,469 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:32:00,469 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:32:00,469 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:32:00,469 INFO L139 ounterexampleChecker]: Examining path program with hash -954574241, occurence #1 [2025-04-24 16:32:00,469 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:32:00,469 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:32:00,470 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:32:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash 32241929, now seen corresponding path program 1 times [2025-04-24 16:32:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 16:32:00,470 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789809678] [2025-04-24 16:32:00,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:32:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:32:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:32:00,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:32:00,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-24 16:32:00,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 16:32:00,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 16:32:00,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:32:00,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:32:00,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-24 16:32:00,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:32:00,693 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 16:32:00,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:32:00,696 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 16:32:00,696 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789809678] [2025-04-24 16:32:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789809678] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:32:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:32:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 16:32:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893013] [2025-04-24 16:32:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:32:00,697 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 16:32:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 16:32:00,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 16:32:00,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 16:32:00,697 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:32:00,697 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:32:00,697 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:32:00,697 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:00,697 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:00,697 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:00,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:00,698 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:32:04,224 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:32:08,240 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:32:12,250 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:32:20,673 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:20,673 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:20,673 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:20,673 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:20,674 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:20,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-24 16:32:20,874 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:32:20,875 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:32:20,875 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:32:20,875 INFO L139 ounterexampleChecker]: Examining path program with hash -60990090, occurence #1 [2025-04-24 16:32:20,875 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:32:20,875 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:32:20,875 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:32:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1049073086, now seen corresponding path program 1 times [2025-04-24 16:32:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 16:32:20,876 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815644834] [2025-04-24 16:32:20,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:32:20,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:32:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:32:20,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:32:20,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-24 16:32:21,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-24 16:32:21,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-24 16:32:21,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:32:21,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:32:21,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-24 16:32:21,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:32:21,185 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 16:32:21,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:32:21,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 16:32:21,186 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815644834] [2025-04-24 16:32:21,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815644834] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:32:21,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:32:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 16:32:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29725302] [2025-04-24 16:32:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:32:21,186 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 16:32:21,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 16:32:21,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 16:32:21,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 16:32:21,187 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:32:21,187 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:32:21,187 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 16:32:21,187 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:21,187 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:21,187 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:21,187 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:21,187 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:21,187 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:32:25,194 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:32:29,202 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-24 16:32:33,334 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:33,334 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:33,334 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:33,334 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:32:33,334 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:33,334 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:32:33,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-24 16:32:33,535 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:32:33,535 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:32:33,535 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:32:33,535 INFO L139 ounterexampleChecker]: Examining path program with hash 1968578963, occurence #1 [2025-04-24 16:32:33,535 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:32:33,535 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:32:33,536 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:32:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1768859989, now seen corresponding path program 1 times [2025-04-24 16:32:33,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 16:32:33,536 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333084474] [2025-04-24 16:32:33,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:32:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:32:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:32:33,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:32:33,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-24 16:32:33,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-24 16:36:24,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-24 16:36:24,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:36:24,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 16:36:24,751 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 16:36:24,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes.