./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis SLEEP_NEW_STATES --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6f232940 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 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis SLEEP_NEW_STATES --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-19 18:07:22,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-19 18:07:22,780 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-03-19 18:07:22,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-19 18:07:22,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-19 18:07:22,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-19 18:07:22,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-19 18:07:22,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-19 18:07:22,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-19 18:07:22,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-19 18:07:22,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-19 18:07:22,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * Use SBE=true [2025-03-19 18:07:22,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-19 18:07:22,807 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-19 18:07:22,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 18:07:22,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-19 18:07:22,808 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-19 18:07:22,809 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-19 18:07:22,809 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> SLEEP_NEW_STATES [2025-03-19 18:07:23,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-19 18:07:23,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-19 18:07:23,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-19 18:07:23,042 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-19 18:07:23,042 INFO L274 PluginConnector]: CDTParser initialized [2025-03-19 18:07:23,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-19 18:07:24,309 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b18cde5cb/f880dde61c6e4dc9b75ffb662336b1fd/FLAG07b1f3f76 [2025-03-19 18:07:24,587 INFO L389 CDTParser]: Found 1 translation units. [2025-03-19 18:07:24,588 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-19 18:07:24,611 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b18cde5cb/f880dde61c6e4dc9b75ffb662336b1fd/FLAG07b1f3f76 [2025-03-19 18:07:25,509 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b18cde5cb/f880dde61c6e4dc9b75ffb662336b1fd [2025-03-19 18:07:25,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-19 18:07:25,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-19 18:07:25,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-19 18:07:25,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-19 18:07:25,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-19 18:07:25,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:07:25" (1/1) ... [2025-03-19 18:07:25,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dcaa77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:25, skipping insertion in model container [2025-03-19 18:07:25,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:07:25" (1/1) ... [2025-03-19 18:07:25,545 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-19 18:07:25,991 WARN L250 ndardFunctionHandler]: 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] [2025-03-19 18:07:26,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 18:07:26,030 INFO L200 MainTranslator]: Completed pre-run [2025-03-19 18:07:26,101 WARN L250 ndardFunctionHandler]: 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] [2025-03-19 18:07:26,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 18:07:26,206 INFO L204 MainTranslator]: Completed translation [2025-03-19 18:07:26,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26 WrapperNode [2025-03-19 18:07:26,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-19 18:07:26,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-19 18:07:26,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-19 18:07:26,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-19 18:07:26,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,247 INFO L138 Inliner]: procedures = 429, calls = 134, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 450 [2025-03-19 18:07:26,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-19 18:07:26,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-19 18:07:26,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-19 18:07:26,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-19 18:07:26,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,266 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-19 18:07:26,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-19 18:07:26,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-19 18:07:26,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-19 18:07:26,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (1/1) ... [2025-03-19 18:07:26,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 18:07:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:07:26,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-19 18:07:26,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-19 18:07:26,332 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-03-19 18:07:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-03-19 18:07:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-19 18:07:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-19 18:07:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-19 18:07:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-19 18:07:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-19 18:07:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-03-19 18:07:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-19 18:07:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-19 18:07:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-19 18:07:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-03-19 18:07:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-03-19 18:07:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-03-19 18:07:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-19 18:07:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-19 18:07:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-19 18:07:26,336 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-19 18:07:26,459 INFO L234 CfgBuilder]: Building ICFG [2025-03-19 18:07:26,460 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-19 18:07:26,906 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-19 18:07:26,906 INFO L283 CfgBuilder]: Performing block encoding [2025-03-19 18:07:27,221 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-19 18:07:27,221 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2025-03-19 18:07:27,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:07:27 BoogieIcfgContainer [2025-03-19 18:07:27,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-19 18:07:27,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-19 18:07:27,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-19 18:07:27,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-19 18:07:27,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:07:25" (1/3) ... [2025-03-19 18:07:27,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16959ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:07:27, skipping insertion in model container [2025-03-19 18:07:27,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:07:26" (2/3) ... [2025-03-19 18:07:27,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16959ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:07:27, skipping insertion in model container [2025-03-19 18:07:27,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:07:27" (3/3) ... [2025-03-19 18:07:27,230 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-03-19 18:07:27,241 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-19 18:07:27,243 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. [2025-03-19 18:07:27,243 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-19 18:07:27,324 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-19 18:07:27,362 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:07:27,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-19 18:07:27,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:07:27,365 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) [2025-03-19 18:07:27,366 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 [2025-03-19 18:07:27,453 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-19 18:07:27,459 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == producer_routineThread1of1ForFork0 ======== [2025-03-19 18:07:27,466 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;@5d0f78d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:07:27,466 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-19 18:07:27,968 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2025-03-19 18:07:27,971 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:07:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1481900307, now seen corresponding path program 1 times [2025-03-19 18:07:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-19 18:07:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693465054] [2025-03-19 18:07:27,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:07:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-19 18:07:28,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-19 18:07:28,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-19 18:07:28,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:07:28,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:07:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:07:28,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-19 18:07:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693465054] [2025-03-19 18:07:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693465054] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:07:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:07:28,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-19 18:07:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659702805] [2025-03-19 18:07:28,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:07:28,347 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-19 18:07:28,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-19 18:07:28,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-19 18:07:28,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-19 18:07:28,361 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:07:28,362 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:07:28,363 INFO L481 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) [2025-03-19 18:07:28,363 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:10:52,029 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:10:52,029 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-19 18:10:52,029 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2025-03-19 18:10:52,030 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:10:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1225798490, now seen corresponding path program 1 times [2025-03-19 18:10:52,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-19 18:10:52,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254489430] [2025-03-19 18:10:52,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:10:52,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-19 18:10:52,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-19 18:10:52,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-19 18:10:52,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:10:52,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:10:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:10:52,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-19 18:10:52,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254489430] [2025-03-19 18:10:52,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254489430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:10:52,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:10:52,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-19 18:10:52,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255455136] [2025-03-19 18:10:52,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:10:52,222 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-19 18:10:52,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-19 18:10:52,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-19 18:10:52,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-19 18:10:52,223 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:10:52,223 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:10:52,223 INFO L481 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) [2025-03-19 18:10:52,223 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:10:52,223 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:10:52,581 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:10:52,581 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:10:52,582 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-19 18:10:52,582 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE] === [2025-03-19 18:10:52,582 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:10:52,582 INFO L85 PathProgramCache]: Analyzing trace with hash 654955265, now seen corresponding path program 1 times [2025-03-19 18:10:52,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-19 18:10:52,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776153227] [2025-03-19 18:10:52,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:10:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-19 18:10:52,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-19 18:10:52,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-19 18:10:52,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:10:52,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-19 18:10:52,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495351072] [2025-03-19 18:10:52,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:10:52,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:10:52,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:10:52,814 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) [2025-03-19 18:10:52,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-19 18:10:52,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-19 18:10:54,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-19 18:10:54,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:10:54,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-19 18:10:54,938 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-19 18:10:54,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-19 18:10:59,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-19 18:10:59,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:10:59,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-19 18:10:59,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-19 18:10:59,195 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-19 18:10:59,196 INFO L791 garLoopResultBuilder]: Registering result UNSAFE for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 1 remaining) [2025-03-19 18:10:59,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-19 18:10:59,397 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-19 18:10:59,400 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-19 18:10:59,401 INFO L320 ceAbstractionStarter]: Result for error location producer_routineThread1of1ForFork0 was UNSAFE (1/3) [2025-03-19 18:10:59,435 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-19 18:10:59,435 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-03-19 18:10:59,642 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forcibly destroying the process [2025-03-19 18:10:59,744 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 137 [2025-03-19 18:10:59,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 06:10:59 BasicIcfg [2025-03-19 18:10:59,745 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-19 18:10:59,747 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-19 18:10:59,747 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-19 18:10:59,747 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-19 18:10:59,748 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:07:27" (3/4) ... [2025-03-19 18:10:59,749 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-19 18:10:59,750 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-19 18:10:59,751 INFO L158 Benchmark]: Toolchain (without parser) took 214238.20ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 89.7MB in the beginning and 83.8MB in the end (delta: 5.9MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2025-03-19 18:10:59,751 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 61.4MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 18:10:59,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 694.00ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 86.3MB in the end (delta: 3.4MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2025-03-19 18:10:59,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.35ms. Allocated memory is still 117.4MB. Free memory was 86.3MB in the beginning and 81.6MB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 18:10:59,752 INFO L158 Benchmark]: Boogie Preprocessor took 36.23ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 78.1MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-19 18:10:59,752 INFO L158 Benchmark]: RCFGBuilder took 936.62ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 73.5MB in the end (delta: 4.6MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2025-03-19 18:10:59,752 INFO L158 Benchmark]: TraceAbstraction took 212520.78ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 72.8MB in the beginning and 83.8MB in the end (delta: -11.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2025-03-19 18:10:59,752 INFO L158 Benchmark]: Witness Printer took 3.52ms. Allocated memory is still 167.8MB. Free memory was 83.8MB in the beginning and 83.8MB in the end (delta: 6.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 18:10:59,753 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 61.4MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 694.00ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 86.3MB in the end (delta: 3.4MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.35ms. Allocated memory is still 117.4MB. Free memory was 86.3MB in the beginning and 81.6MB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.23ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 78.1MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 936.62ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 73.5MB in the end (delta: 4.6MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * TraceAbstraction took 212520.78ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 72.8MB in the beginning and 83.8MB in the end (delta: -11.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Witness Printer took 3.52ms. Allocated memory is still 167.8MB. Free memory was 83.8MB in the beginning and 83.8MB in the end (delta: 6.5kB). 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: 143, independent: 82, independent conditional: 82, independent unconditional: 0, dependent: 59, dependent conditional: 59, dependent unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 92, independent: 82, independent conditional: 0, independent unconditional: 82, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 44, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 44, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 203889, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 726, dependent conditional: 0, dependent unconditional: 726, unknown: 203163, unknown conditional: 0, unknown unconditional: 203163] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 92, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 45, unknown conditional: 0, unknown unconditional: 45] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1, 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: 212.0s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 204.5s, 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, 2.3s 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: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-19 18:10:59,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis SLEEP_NEW_STATES --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-19 18:11:01,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-19 18:11:01,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-03-19 18:11:01,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-19 18:11:01,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-19 18:11:01,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-19 18:11:01,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-19 18:11:01,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-19 18:11:01,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-19 18:11:01,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-19 18:11:01,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Use SBE=true [2025-03-19 18:11:01,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-19 18:11:01,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-19 18:11:01,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 18:11:01,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-19 18:11:01,422 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-19 18:11:01,422 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> SLEEP_NEW_STATES [2025-03-19 18:11:01,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-19 18:11:01,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-19 18:11:01,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-19 18:11:01,633 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-19 18:11:01,633 INFO L274 PluginConnector]: CDTParser initialized [2025-03-19 18:11:01,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-19 18:11:02,929 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/37063e72d/c7e1b9dc2b8443aeae4fcfb352212f5e/FLAGa372de0d3 [2025-03-19 18:11:03,157 INFO L389 CDTParser]: Found 1 translation units. [2025-03-19 18:11:03,160 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-19 18:11:03,180 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/37063e72d/c7e1b9dc2b8443aeae4fcfb352212f5e/FLAGa372de0d3 [2025-03-19 18:11:03,930 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/37063e72d/c7e1b9dc2b8443aeae4fcfb352212f5e [2025-03-19 18:11:03,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-19 18:11:03,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-19 18:11:03,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-19 18:11:03,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-19 18:11:03,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-19 18:11:03,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:11:03" (1/1) ... [2025-03-19 18:11:03,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24967cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:03, skipping insertion in model container [2025-03-19 18:11:03,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:11:03" (1/1) ... [2025-03-19 18:11:03,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-19 18:11:04,348 WARN L250 ndardFunctionHandler]: 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] [2025-03-19 18:11:04,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 18:11:04,397 INFO L200 MainTranslator]: Completed pre-run [2025-03-19 18:11:04,465 WARN L250 ndardFunctionHandler]: 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] [2025-03-19 18:11:04,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 18:11:04,568 INFO L204 MainTranslator]: Completed translation [2025-03-19 18:11:04,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04 WrapperNode [2025-03-19 18:11:04,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-19 18:11:04,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-19 18:11:04,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-19 18:11:04,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-19 18:11:04,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,610 INFO L138 Inliner]: procedures = 432, calls = 134, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 446 [2025-03-19 18:11:04,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-19 18:11:04,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-19 18:11:04,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-19 18:11:04,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-19 18:11:04,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,648 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,650 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-19 18:11:04,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-19 18:11:04,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-19 18:11:04,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-19 18:11:04,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (1/1) ... [2025-03-19 18:11:04,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 18:11:04,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:11:04,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-19 18:11:04,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-03-19 18:11:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-19 18:11:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-03-19 18:11:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-03-19 18:11:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-19 18:11:04,720 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-19 18:11:04,873 INFO L234 CfgBuilder]: Building ICFG [2025-03-19 18:11:04,874 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-19 18:11:05,517 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-19 18:11:05,517 INFO L283 CfgBuilder]: Performing block encoding [2025-03-19 18:11:05,948 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-19 18:11:05,948 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2025-03-19 18:11:05,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:11:05 BoogieIcfgContainer [2025-03-19 18:11:05,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-19 18:11:05,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-19 18:11:05,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-19 18:11:05,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-19 18:11:05,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:11:03" (1/3) ... [2025-03-19 18:11:05,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680c2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:11:05, skipping insertion in model container [2025-03-19 18:11:05,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:11:04" (2/3) ... [2025-03-19 18:11:05,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680c2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:11:05, skipping insertion in model container [2025-03-19 18:11:05,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:11:05" (3/3) ... [2025-03-19 18:11:05,957 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-03-19 18:11:05,969 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-19 18:11:05,972 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. [2025-03-19 18:11:05,972 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-19 18:11:06,075 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-19 18:11:06,111 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:11:06,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-19 18:11:06,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:11:06,114 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) [2025-03-19 18:11:06,117 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 [2025-03-19 18:11:06,198 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-19 18:11:06,203 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-03-19 18:11:06,212 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;@6c4f2283, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:11:06,212 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-19 18:11:07,489 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-19 18:11:07,492 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:11:07,493 INFO L85 PathProgramCache]: Analyzing trace with hash 549486852, now seen corresponding path program 1 times [2025-03-19 18:11:07,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 18:11:07,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721585563] [2025-03-19 18:11:07,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:11:07,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:07,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:11:07,519 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) [2025-03-19 18:11:07,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-19 18:11:07,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-19 18:11:07,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-19 18:11:07,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:11:07,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:11:07,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-19 18:11:07,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 18:11:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:11:07,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 18:11:07,728 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 18:11:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721585563] [2025-03-19 18:11:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721585563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:11:07,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:11:07,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-19 18:11:07,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060114385] [2025-03-19 18:11:07,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:11:07,732 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-19 18:11:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 18:11:07,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-19 18:11:07,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-19 18:11:07,748 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:07,749 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:11:07,750 INFO L481 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) [2025-03-19 18:11:07,750 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:09,761 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:11,767 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:12,369 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:12,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-19 18:11:12,570 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:12,570 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-19 18:11:12,571 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:11:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash 688855259, now seen corresponding path program 1 times [2025-03-19 18:11:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 18:11:12,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271423839] [2025-03-19 18:11:12,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:11:12,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:11:12,575 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) [2025-03-19 18:11:12,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-19 18:11:12,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-19 18:11:12,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-19 18:11:12,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:11:12,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:11:12,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-19 18:11:12,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 18:11:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:11:12,773 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 18:11:12,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 18:11:12,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271423839] [2025-03-19 18:11:12,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271423839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:11:12,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:11:12,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-19 18:11:12,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604509510] [2025-03-19 18:11:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:11:12,774 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-19 18:11:12,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 18:11:12,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-19 18:11:12,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-19 18:11:12,775 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:12,775 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:11:12,775 INFO L481 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) [2025-03-19 18:11:12,775 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:12,775 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:14,782 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:16,790 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:18,797 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:22,958 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:22,958 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:11:22,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-19 18:11:23,159 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:23,159 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-19 18:11:23,159 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:11:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash 688891777, now seen corresponding path program 1 times [2025-03-19 18:11:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 18:11:23,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071407721] [2025-03-19 18:11:23,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:11:23,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:23,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:11:23,162 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) [2025-03-19 18:11:23,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-19 18:11:23,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-19 18:11:23,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-19 18:11:23,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:11:23,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:11:23,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-19 18:11:23,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 18:11:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:11:23,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 18:11:23,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 18:11:23,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071407721] [2025-03-19 18:11:23,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071407721] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:11:23,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:11:23,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-19 18:11:23,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78960830] [2025-03-19 18:11:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:11:23,336 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-19 18:11:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 18:11:23,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-19 18:11:23,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-19 18:11:23,337 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:23,337 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:11:23,337 INFO L481 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) [2025-03-19 18:11:23,337 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:23,337 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:11:23,337 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:25,345 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:26,486 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:26,486 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:11:26,486 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:26,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-19 18:11:26,687 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:26,687 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-19 18:11:26,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:11:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash -472980834, now seen corresponding path program 1 times [2025-03-19 18:11:26,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 18:11:26,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972766965] [2025-03-19 18:11:26,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:11:26,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:26,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:11:26,689 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) [2025-03-19 18:11:26,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-19 18:11:26,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-19 18:11:26,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-19 18:11:26,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:11:26,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:11:26,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-19 18:11:26,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 18:11:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:11:26,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 18:11:26,883 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 18:11:26,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972766965] [2025-03-19 18:11:26,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972766965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:11:26,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:11:26,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-19 18:11:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188902956] [2025-03-19 18:11:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:11:26,883 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-19 18:11:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 18:11:26,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-19 18:11:26,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-19 18:11:26,884 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:26,884 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:11:26,884 INFO L481 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) [2025-03-19 18:11:26,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:26,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:11:26,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:26,884 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:28,891 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:30,896 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:31,521 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:31,521 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:11:31,521 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:31,523 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:31,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-19 18:11:31,723 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:31,723 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-19 18:11:31,724 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:11:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash 32241929, now seen corresponding path program 1 times [2025-03-19 18:11:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 18:11:31,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337332649] [2025-03-19 18:11:31,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:11:31,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:11:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:11:31,726 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) [2025-03-19 18:11:31,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-19 18:11:31,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-19 18:11:31,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-19 18:11:31,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:11:31,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:11:31,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-19 18:11:31,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 18:11:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:11:31,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 18:11:31,927 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 18:11:31,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337332649] [2025-03-19 18:11:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337332649] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:11:31,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:11:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-19 18:11:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750230678] [2025-03-19 18:11:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:11:31,928 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-19 18:11:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 18:11:31,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-19 18:11:31,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-19 18:11:31,928 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:31,928 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:11:31,928 INFO L481 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) [2025-03-19 18:11:31,928 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:31,928 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:11:31,928 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:31,928 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:11:31,928 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:11:33,938 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:35,945 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:11:37,952 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:18:21,779 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:21,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:18:21,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:21,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:21,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:18:21,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-19 18:18:21,980 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:18:21,981 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-19 18:18:21,981 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:18:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1049073086, now seen corresponding path program 1 times [2025-03-19 18:18:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 18:18:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523787345] [2025-03-19 18:18:21,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:18:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:18:21,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:18:21,983 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) [2025-03-19 18:18:21,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-19 18:18:22,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-19 18:18:22,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-19 18:18:22,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:18:22,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:18:22,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-19 18:18:22,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 18:18:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:18:22,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 18:18:22,294 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 18:18:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523787345] [2025-03-19 18:18:22,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523787345] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:18:22,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:18:22,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-19 18:18:22,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562522740] [2025-03-19 18:18:22,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:18:22,295 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-19 18:18:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 18:18:22,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-19 18:18:22,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-19 18:18:22,295 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:18:22,295 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:18:22,295 INFO L481 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) [2025-03-19 18:18:22,295 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:22,296 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:18:22,296 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:22,296 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:22,296 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:18:22,296 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:18:24,303 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:18:26,311 WARN L538 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-19 18:18:26,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:26,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:18:26,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:26,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:18:26,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:18:26,626 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-19 18:18:26,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-19 18:18:26,826 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:18:26,826 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-19 18:18:26,827 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:18:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1768859989, now seen corresponding path program 1 times [2025-03-19 18:18:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 18:18:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334995590] [2025-03-19 18:18:26,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:18:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 18:18:26,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:18:26,829 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) [2025-03-19 18:18:26,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-19 18:18:26,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-19 18:22:01,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-19 18:22:01,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:22:01,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-19 18:22:01,724 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-19 18:22:01,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. Killed by 15