./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 01849734 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-0184973-m [2025-04-24 17:15:33,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 17:15:33,872 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 17:15:33,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 17:15:33,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 17:15:33,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 17:15:33,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 17:15:33,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 17:15:33,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 17:15:33,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 17:15:33,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 17:15:33,890 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 17:15:33,890 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 17:15:33,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 17:15:33,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 17:15:33,891 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 17:15:33,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 17:15:33,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 17:15:33,892 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 17:15:33,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 17:15:33,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 17:15:33,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 17:15:33,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 17:15:33,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 17:15:33,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 17:15:33,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 17:15:33,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 17:15:33,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 17:15:33,894 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 17:15:33,895 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 17:15:33,895 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 -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2025-04-24 17:15:34,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 17:15:34,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 17:15:34,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 17:15:34,166 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 17:15:34,166 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 17:15:34,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2025-04-24 17:15:35,471 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2b6a88b54/985f74743f05425480e28586ee50facf/FLAG74555a749 [2025-04-24 17:15:35,628 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 17:15:35,628 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2025-04-24 17:15:35,635 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2b6a88b54/985f74743f05425480e28586ee50facf/FLAG74555a749 [2025-04-24 17:15:36,471 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2b6a88b54/985f74743f05425480e28586ee50facf [2025-04-24 17:15:36,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 17:15:36,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 17:15:36,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 17:15:36,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 17:15:36,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 17:15:36,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54edcbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36, skipping insertion in model container [2025-04-24 17:15:36,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 17:15:36,625 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2025-04-24 17:15:36,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 17:15:36,638 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 17:15:36,663 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2025-04-24 17:15:36,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 17:15:36,682 INFO L204 MainTranslator]: Completed translation [2025-04-24 17:15:36,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36 WrapperNode [2025-04-24 17:15:36,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 17:15:36,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 17:15:36,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 17:15:36,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 17:15:36,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,724 INFO L138 Inliner]: procedures = 24, calls = 48, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 297 [2025-04-24 17:15:36,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 17:15:36,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 17:15:36,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 17:15:36,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 17:15:36,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,745 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 17:15:36,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 17:15:36,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 17:15:36,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 17:15:36,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (1/1) ... [2025-04-24 17:15:36,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 17:15:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:15:36,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 17:15:36,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 17:15:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 17:15:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-24 17:15:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-24 17:15:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-24 17:15:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-24 17:15:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-24 17:15:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-24 17:15:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 17:15:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 17:15:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 17:15:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 17:15:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-24 17:15:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 17:15:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 17:15:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 17:15:36,807 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 17:15:36,899 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 17:15:36,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 17:15:37,213 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 17:15:37,213 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 17:15:37,450 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 17:15:37,450 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-24 17:15:37,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 05:15:37 BoogieIcfgContainer [2025-04-24 17:15:37,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 17:15:37,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 17:15:37,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 17:15:37,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 17:15:37,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 05:15:36" (1/3) ... [2025-04-24 17:15:37,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2192114f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 05:15:37, skipping insertion in model container [2025-04-24 17:15:37,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:15:36" (2/3) ... [2025-04-24 17:15:37,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2192114f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 05:15:37, skipping insertion in model container [2025-04-24 17:15:37,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 05:15:37" (3/3) ... [2025-04-24 17:15:37,458 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2025-04-24 17:15:37,468 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 17:15:37,470 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring-nondet.wvr.c that has 4 procedures, 43 locations, 49 edges, 1 initial locations, 6 loop locations, and 1 error locations. [2025-04-24 17:15:37,470 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 17:15:37,520 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-24 17:15:37,548 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 17:15:37,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 17:15:37,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:15:37,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 17:15:37,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 17:15:37,614 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 17:15:37,626 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 17:15:37,630 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;@b209449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 17:15:37,631 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-24 17:15:37,728 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-24 17:15:37,728 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:15:37,729 INFO L139 ounterexampleChecker]: Examining path program with hash -30885618, occurence #1 [2025-04-24 17:15:37,729 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:15:37,729 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:15:37,732 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:15:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash -524247465, now seen corresponding path program 1 times [2025-04-24 17:15:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:15:37,739 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767586337] [2025-04-24 17:15:37,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:15:37,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:15:37,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 17:15:37,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 17:15:37,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:15:37,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 17:15:37,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:15:37,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767586337] [2025-04-24 17:15:37,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767586337] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:15:37,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 17:15:37,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 17:15:37,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488163469] [2025-04-24 17:15:37,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:15:37,912 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-24 17:15:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:15:37,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-24 17:15:37,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-24 17:15:37,927 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:37,928 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:15:37,929 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 17:15:37,929 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,016 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 17:15:38,016 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-24 17:15:38,016 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:15:38,016 INFO L139 ounterexampleChecker]: Examining path program with hash 140882547, occurence #1 [2025-04-24 17:15:38,016 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:15:38,016 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:15:38,017 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:15:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash -203024035, now seen corresponding path program 1 times [2025-04-24 17:15:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:15:38,017 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729460562] [2025-04-24 17:15:38,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:15:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:15:38,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-24 17:15:38,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-24 17:15:38,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:15:38,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 17:15:38,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:15:38,171 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729460562] [2025-04-24 17:15:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729460562] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:15:38,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 17:15:38,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 17:15:38,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049101144] [2025-04-24 17:15:38,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:15:38,171 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 17:15:38,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:15:38,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 17:15:38,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 17:15:38,172 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,172 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:15:38,172 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 17:15:38,172 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,172 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,283 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,283 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,283 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 17:15:38,284 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-24 17:15:38,284 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:15:38,284 INFO L139 ounterexampleChecker]: Examining path program with hash -1884264161, occurence #1 [2025-04-24 17:15:38,284 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:15:38,284 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:15:38,284 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:15:38,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1702469562, now seen corresponding path program 1 times [2025-04-24 17:15:38,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:15:38,284 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978017499] [2025-04-24 17:15:38,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:15:38,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:15:38,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-24 17:15:38,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-24 17:15:38,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:15:38,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 17:15:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:15:38,382 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978017499] [2025-04-24 17:15:38,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978017499] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:15:38,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 17:15:38,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 17:15:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843872593] [2025-04-24 17:15:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:15:38,382 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 17:15:38,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:15:38,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 17:15:38,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 17:15:38,383 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,383 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:15:38,383 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 17:15:38,383 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,384 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,384 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,467 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,467 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,467 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,467 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 17:15:38,468 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-24 17:15:38,468 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:15:38,468 INFO L139 ounterexampleChecker]: Examining path program with hash -135394191, occurence #1 [2025-04-24 17:15:38,468 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:15:38,468 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:15:38,468 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:15:38,468 INFO L85 PathProgramCache]: Analyzing trace with hash 588453100, now seen corresponding path program 2 times [2025-04-24 17:15:38,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:15:38,468 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45014968] [2025-04-24 17:15:38,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 17:15:38,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:15:38,485 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-04-24 17:15:38,506 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 50 statements. [2025-04-24 17:15:38,506 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-24 17:15:38,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-24 17:15:38,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:15:38,692 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45014968] [2025-04-24 17:15:38,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45014968] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:15:38,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 17:15:38,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 17:15:38,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616181701] [2025-04-24 17:15:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:15:38,693 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 17:15:38,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:15:38,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 17:15:38,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 17:15:38,694 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,694 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:15:38,694 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 17:15:38,695 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,695 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,695 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,695 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,790 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:38,790 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,790 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:38,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:15:38,791 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-24 17:15:38,791 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-24 17:15:38,792 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:15:38,792 INFO L139 ounterexampleChecker]: Examining path program with hash -135394191, occurence #2 [2025-04-24 17:15:38,792 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 17:15:38,792 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-04-24 17:15:38,793 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:38,793 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-04-24 17:15:38,793 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:38,793 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 17:15:38,795 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 17:15:38,795 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-04-24 17:15:38,795 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-04-24 17:15:38,795 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-04-24 17:15:38,795 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 35 [2025-04-24 17:15:38,795 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 36 [2025-04-24 17:15:38,795 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 42 [2025-04-24 17:15:38,795 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:38,795 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 46 [2025-04-24 17:15:38,795 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:38,796 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 17:15:38,796 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:15:38,796 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:15:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1273943992, now seen corresponding path program 1 times [2025-04-24 17:15:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:15:38,796 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980114341] [2025-04-24 17:15:38,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:15:38,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:15:38,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-24 17:15:38,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-24 17:15:38,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:15:38,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 17:15:38,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:15:38,918 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980114341] [2025-04-24 17:15:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980114341] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 17:15:38,918 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042161918] [2025-04-24 17:15:38,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:15:38,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:15:38,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:15:38,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 17:15:38,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-24 17:15:38,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-24 17:15:39,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-24 17:15:39,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:15:39,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:39,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 17:15:39,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 17:15:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-24 17:15:39,097 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 17:15:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042161918] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:15:39,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-24 17:15:39,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-04-24 17:15:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755927664] [2025-04-24 17:15:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:15:39,105 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 17:15:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:15:39,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 17:15:39,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-24 17:15:39,105 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:39,105 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:15:39,106 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 17:15:39,106 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:39,106 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:39,106 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:39,106 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:15:39,106 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:39,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:39,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:39,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:39,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:15:39,191 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:15:39,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-24 17:15:39,395 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:15:39,395 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-24 17:15:39,395 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:15:39,395 INFO L139 ounterexampleChecker]: Examining path program with hash -135394191, occurence #3 [2025-04-24 17:15:39,395 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 17:15:39,395 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-04-24 17:15:39,395 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:39,395 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-24 17:15:39,395 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:39,395 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-04-24 17:15:39,396 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-04-24 17:15:39,398 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-04-24 17:15:39,398 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-04-24 17:15:39,398 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 29 [2025-04-24 17:15:39,398 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 36 [2025-04-24 17:15:39,398 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 37 [2025-04-24 17:15:39,398 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2025-04-24 17:15:39,398 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 17:15:39,398 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 47 [2025-04-24 17:15:39,398 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 17:15:39,398 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 17:15:39,398 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:15:39,399 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:15:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash 702282914, now seen corresponding path program 1 times [2025-04-24 17:15:39,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:15:39,399 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040146862] [2025-04-24 17:15:39,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:15:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:15:39,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-04-24 17:15:39,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-04-24 17:15:39,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:15:39,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-24 17:15:39,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:15:39,479 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040146862] [2025-04-24 17:15:39,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040146862] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 17:15:39,479 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233615043] [2025-04-24 17:15:39,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:15:39,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:15:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:15:39,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 17:15:39,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-24 17:15:39,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-04-24 17:15:39,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-04-24 17:15:39,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:15:39,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:15:39,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-24 17:15:39,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 17:15:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 17:15:39,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 17:15:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 17:15:39,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233615043] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 17:15:39,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 17:15:39,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2025-04-24 17:15:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793164715] [2025-04-24 17:15:39,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 17:15:39,839 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-24 17:15:39,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:15:39,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-24 17:15:39,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-04-24 17:15:39,839 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:39,839 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:15:39,840 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 17:15:39,840 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:39,840 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:39,840 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:39,840 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:15:39,840 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:15:39,840 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:40,903 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:15:40,903 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:40,903 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 17:15:40,903 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:15:40,903 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:15:40,904 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-24 17:15:40,905 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-24 17:15:40,906 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-24 17:15:40,906 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-24 17:15:40,906 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-24 17:15:40,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-24 17:15:41,106 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:15:41,111 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2025-04-24 17:15:41,115 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 17:15:41,115 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 17:15:41,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-24 17:15:41,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 05:15:41 BasicIcfg [2025-04-24 17:15:41,125 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 17:15:41,125 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 17:15:41,126 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 17:15:41,126 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 17:15:41,126 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 05:15:37" (3/4) ... [2025-04-24 17:15:41,128 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-24 17:15:41,130 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-04-24 17:15:41,130 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-04-24 17:15:41,130 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-04-24 17:15:41,134 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 183 nodes and edges [2025-04-24 17:15:41,134 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-04-24 17:15:41,134 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-04-24 17:15:41,134 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-24 17:15:41,193 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-24 17:15:41,194 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-24 17:15:41,194 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 17:15:41,194 INFO L158 Benchmark]: Toolchain (without parser) took 4719.12ms. Allocated memory was 83.9MB in the beginning and 142.6MB in the end (delta: 58.7MB). Free memory was 59.3MB in the beginning and 80.9MB in the end (delta: -21.6MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2025-04-24 17:15:41,195 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 17:15:41,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.70ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 44.2MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-24 17:15:41,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.52ms. Allocated memory is still 83.9MB. Free memory was 44.2MB in the beginning and 41.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 17:15:41,195 INFO L158 Benchmark]: Boogie Preprocessor took 27.01ms. Allocated memory is still 83.9MB. Free memory was 41.5MB in the beginning and 39.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 17:15:41,195 INFO L158 Benchmark]: RCFGBuilder took 696.06ms. Allocated memory is still 83.9MB. Free memory was 39.5MB in the beginning and 50.7MB in the end (delta: -11.1MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2025-04-24 17:15:41,196 INFO L158 Benchmark]: TraceAbstraction took 3673.05ms. Allocated memory was 83.9MB in the beginning and 142.6MB in the end (delta: 58.7MB). Free memory was 50.2MB in the beginning and 88.6MB in the end (delta: -38.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2025-04-24 17:15:41,196 INFO L158 Benchmark]: Witness Printer took 68.23ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 80.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 17:15:41,197 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.70ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 44.2MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.52ms. Allocated memory is still 83.9MB. Free memory was 44.2MB in the beginning and 41.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.01ms. Allocated memory is still 83.9MB. Free memory was 41.5MB in the beginning and 39.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 696.06ms. Allocated memory is still 83.9MB. Free memory was 39.5MB in the beginning and 50.7MB in the end (delta: -11.1MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3673.05ms. Allocated memory was 83.9MB in the beginning and 142.6MB in the end (delta: 58.7MB). Free memory was 50.2MB in the beginning and 88.6MB in the end (delta: -38.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Witness Printer took 68.23ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 80.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 29190, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 4208, dependent conditional: 4198, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25183, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 201, dependent conditional: 191, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 25183, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 201, dependent conditional: 191, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25579, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 597, dependent conditional: 587, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 25579, independent: 24982, independent conditional: 0, independent unconditional: 24982, dependent: 597, dependent conditional: 112, dependent unconditional: 485, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 25579, independent: 24982, independent conditional: 0, independent unconditional: 24982, dependent: 597, dependent conditional: 112, dependent unconditional: 485, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1275, independent: 1256, independent conditional: 0, independent unconditional: 1256, dependent: 19, dependent conditional: 9, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1275, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 25, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 19, dependent conditional: 9, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 19, dependent conditional: 9, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 62, dependent conditional: 26, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 25579, independent: 23726, independent conditional: 0, independent unconditional: 23726, dependent: 578, dependent conditional: 103, dependent unconditional: 475, unknown: 1275, unknown conditional: 9, unknown unconditional: 1266] , Statistics on independence cache: Total cache size (in pairs): 1275, Positive cache size: 1256, Positive conditional cache size: 0, Positive unconditional cache size: 1256, Negative cache size: 19, Negative conditional cache size: 9, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 23753, Maximal queried relation: 3, Independence queries for same thread: 4007, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 1631, Number of trivial persistent sets: 1173, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1714, independent: 1704, independent conditional: 0, independent unconditional: 1704, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 29190, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 4208, dependent conditional: 4198, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25183, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 201, dependent conditional: 191, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 25183, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 201, dependent conditional: 191, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25579, independent: 24982, independent conditional: 23278, independent unconditional: 1704, dependent: 597, dependent conditional: 587, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 25579, independent: 24982, independent conditional: 0, independent unconditional: 24982, dependent: 597, dependent conditional: 112, dependent unconditional: 485, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 25579, independent: 24982, independent conditional: 0, independent unconditional: 24982, dependent: 597, dependent conditional: 112, dependent unconditional: 485, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1275, independent: 1256, independent conditional: 0, independent unconditional: 1256, dependent: 19, dependent conditional: 9, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1275, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 25, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 19, dependent conditional: 9, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 19, dependent conditional: 9, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 62, dependent conditional: 26, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 25579, independent: 23726, independent conditional: 0, independent unconditional: 23726, dependent: 578, dependent conditional: 103, dependent unconditional: 475, unknown: 1275, unknown conditional: 9, unknown unconditional: 1266] , Statistics on independence cache: Total cache size (in pairs): 1275, Positive cache size: 1256, Positive conditional cache size: 0, Positive unconditional cache size: 1256, Negative cache size: 19, Negative conditional cache size: 9, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 23753, Maximal queried relation: 3, Independence queries for same thread: 4007 - PositiveResult [Line: 156]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 72 locations, 88 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 1.6s, 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: 34, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 356 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 399 ConstructedInterpolants, 0 QuantifiedInterpolants, 1021 SizeOfPredicates, 3 NumberOfNonLiveVariables, 663 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 47/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: SuccessfulCommutativityProofs: 0, ConComChecker Statistics: CheckTime [ms]: 2, ConditionCalculationTime [ms]: 0, ConditionCalculations: 14, QuantifiedConditions: 0, TraceChecks: 0, UnknownTraceChecks: 0, UnsatisfiedConditions: 0, ImperfectProofs: 0 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-24 17:15:41,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE