./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-2.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/parallel-misc-2.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 c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-0184973-m [2025-04-24 17:09:33,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 17:09:33,973 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 17:09:33,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 17:09:33,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 17:09:34,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 17:09:34,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 17:09:34,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 17:09:34,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 17:09:34,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 17:09:34,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 17:09:34,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 17:09:34,008 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 17:09:34,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 17:09:34,009 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 17:09:34,010 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 17:09:34,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 17:09:34,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 17:09:34,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 17:09:34,011 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 17:09:34,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 17:09:34,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 17:09:34,012 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 17:09:34,012 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 17:09:34,012 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 -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2025-04-24 17:09:34,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 17:09:34,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 17:09:34,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 17:09:34,285 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 17:09:34,285 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 17:09:34,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2025-04-24 17:09:35,608 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/99fe23783/00788a6177644fb1b164baec3f701153/FLAG0a255695e [2025-04-24 17:09:35,783 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 17:09:35,783 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2025-04-24 17:09:35,791 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/99fe23783/00788a6177644fb1b164baec3f701153/FLAG0a255695e [2025-04-24 17:09:36,658 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/99fe23783/00788a6177644fb1b164baec3f701153 [2025-04-24 17:09:36,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 17:09:36,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 17:09:36,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 17:09:36,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 17:09:36,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 17:09:36,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7417ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36, skipping insertion in model container [2025-04-24 17:09:36,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 17:09:36,835 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/parallel-misc-2.wvr.c[2249,2262] [2025-04-24 17:09:36,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 17:09:36,849 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 17:09:36,885 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/parallel-misc-2.wvr.c[2249,2262] [2025-04-24 17:09:36,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 17:09:36,904 INFO L204 MainTranslator]: Completed translation [2025-04-24 17:09:36,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36 WrapperNode [2025-04-24 17:09:36,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 17:09:36,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 17:09:36,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 17:09:36,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 17:09:36,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,938 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-04-24 17:09:36,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 17:09:36,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 17:09:36,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 17:09:36,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 17:09:36,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,955 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 17:09:36,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 17:09:36,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 17:09:36,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 17:09:36,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (1/1) ... [2025-04-24 17:09:36,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 17:09:36,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:09:36,996 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 17:09:37,004 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 17:09:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 17:09:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-24 17:09:37,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-24 17:09:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-24 17:09:37,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-24 17:09:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 17:09:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 17:09:37,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 17:09:37,022 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 17:09:37,087 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 17:09:37,089 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 17:09:37,227 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 17:09:37,227 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 17:09:37,331 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 17:09:37,331 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 17:09:37,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 05:09:37 BoogieIcfgContainer [2025-04-24 17:09:37,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 17:09:37,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 17:09:37,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 17:09:37,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 17:09:37,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 05:09:36" (1/3) ... [2025-04-24 17:09:37,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622c07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 05:09:37, skipping insertion in model container [2025-04-24 17:09:37,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 05:09:36" (2/3) ... [2025-04-24 17:09:37,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622c07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 05:09:37, skipping insertion in model container [2025-04-24 17:09:37,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 05:09:37" (3/3) ... [2025-04-24 17:09:37,354 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2025-04-24 17:09:37,364 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 17:09:37,366 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-2.wvr.c that has 3 procedures, 29 locations, 30 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-24 17:09:37,366 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 17:09:37,408 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-24 17:09:37,437 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 17:09:37,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 17:09:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:09:37,440 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 17:09:37,442 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 17:09:37,499 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 17:09:37,513 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 17:09:37,520 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;@320bc154, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 17:09:37,520 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-24 17:09:37,622 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 17:09:37,622 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:09:37,623 INFO L139 ounterexampleChecker]: Examining path program with hash -1112909302, occurence #1 [2025-04-24 17:09:37,623 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:09:37,623 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:09:37,627 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:09:37,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1464225346, now seen corresponding path program 1 times [2025-04-24 17:09:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:09:37,635 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815674747] [2025-04-24 17:09:37,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:09:37,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:09:37,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-24 17:09:37,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-24 17:09:37,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:09:37,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:37,979 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 17:09:37,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:09:37,980 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815674747] [2025-04-24 17:09:37,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815674747] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:09:37,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 17:09:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 17:09:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046291784] [2025-04-24 17:09:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:09:37,986 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 17:09:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:09:37,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 17:09:37,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 17:09:38,000 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:38,001 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:09:38,002 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 17:09:38,002 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:38,104 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:38,104 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 17:09:38,104 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 17:09:38,106 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:09:38,106 INFO L139 ounterexampleChecker]: Examining path program with hash -687417324, occurence #1 [2025-04-24 17:09:38,107 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:09:38,107 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:09:38,107 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:09:38,107 INFO L85 PathProgramCache]: Analyzing trace with hash -910422195, now seen corresponding path program 1 times [2025-04-24 17:09:38,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:09:38,107 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778706730] [2025-04-24 17:09:38,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:09:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:09:38,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-24 17:09:38,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-24 17:09:38,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:09:38,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 17:09:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:09:38,326 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778706730] [2025-04-24 17:09:38,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778706730] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:09:38,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 17:09:38,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 17:09:38,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22502182] [2025-04-24 17:09:38,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:09:38,328 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 17:09:38,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:09:38,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 17:09:38,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 17:09:38,328 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:38,328 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:09:38,329 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 17:09:38,329 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:38,329 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:38,416 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:38,416 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:38,417 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 17:09:38,417 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 17:09:38,417 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:09:38,418 INFO L139 ounterexampleChecker]: Examining path program with hash -1719521395, occurence #1 [2025-04-24 17:09:38,418 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:09:38,418 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:09:38,418 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:09:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 817022079, now seen corresponding path program 1 times [2025-04-24 17:09:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:09:38,419 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15530929] [2025-04-24 17:09:38,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:09:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:09:38,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-24 17:09:38,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-24 17:09:38,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:09:38,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 17:09:38,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:09:38,952 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15530929] [2025-04-24 17:09:38,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15530929] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 17:09:38,952 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015947176] [2025-04-24 17:09:38,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:09:38,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:09:38,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:09:38,976 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 17:09:38,978 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 17:09:39,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-24 17:09:39,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-24 17:09:39,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:09:39,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:39,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-24 17:09:39,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 17:09:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 17:09:39,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 17:09:39,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015947176] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 17:09:39,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-24 17:09:39,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-04-24 17:09:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581485965] [2025-04-24 17:09:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 17:09:39,119 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 17:09:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:09:39,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 17:09:39,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-04-24 17:09:39,121 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:39,121 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:09:39,121 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 17:09:39,122 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:39,122 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:39,122 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:39,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:39,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:39,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:39,198 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 17:09:39,391 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-04-24 17:09:39,392 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 17:09:39,393 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:09:39,393 INFO L139 ounterexampleChecker]: Examining path program with hash 1282604392, occurence #1 [2025-04-24 17:09:39,393 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:09:39,393 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:09:39,394 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:09:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1024522145, now seen corresponding path program 1 times [2025-04-24 17:09:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:09:39,394 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912388737] [2025-04-24 17:09:39,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:09:39,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:09:39,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-24 17:09:39,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-24 17:09:39,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:09:39,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 17:09:39,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:09:39,763 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912388737] [2025-04-24 17:09:39,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912388737] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 17:09:39,763 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868175507] [2025-04-24 17:09:39,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 17:09:39,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:09:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:09:39,765 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 17:09:39,767 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 17:09:39,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-24 17:09:39,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-24 17:09:39,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 17:09:39,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:39,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-24 17:09:39,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 17:09:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 17:09:39,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 17:09:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 17:09:40,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868175507] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 17:09:40,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 17:09:40,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2025-04-24 17:09:40,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877982228] [2025-04-24 17:09:40,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 17:09:40,035 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-24 17:09:40,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:09:40,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-24 17:09:40,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-04-24 17:09:40,036 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:40,037 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:09:40,037 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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 17:09:40,037 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:40,037 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:40,037 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:40,037 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:40,941 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:40,941 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:40,941 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:40,942 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-24 17:09:40,949 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 17:09:41,147 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:09:41,147 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 17:09:41,147 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:09:41,147 INFO L139 ounterexampleChecker]: Examining path program with hash 327941973, occurence #1 [2025-04-24 17:09:41,147 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:09:41,147 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:09:41,148 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:09:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2126736295, now seen corresponding path program 2 times [2025-04-24 17:09:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:09:41,148 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560972373] [2025-04-24 17:09:41,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 17:09:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:09:41,156 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-04-24 17:09:41,218 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-04-24 17:09:41,219 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 17:09:41,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 4 proven. 67 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-04-24 17:09:41,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:09:41,697 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560972373] [2025-04-24 17:09:41,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560972373] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 17:09:41,697 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595178517] [2025-04-24 17:09:41,697 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 17:09:41,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:09:41,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:09:41,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 17:09:41,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-24 17:09:41,738 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-04-24 17:09:42,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-04-24 17:09:42,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 17:09:42,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:09:42,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-24 17:09:42,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 17:09:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 17:09:42,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 17:09:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 17:09:43,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595178517] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 17:09:43,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 17:09:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 29 [2025-04-24 17:09:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298962082] [2025-04-24 17:09:43,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 17:09:43,230 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-24 17:09:43,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:09:43,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-24 17:09:43,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2025-04-24 17:09:43,231 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:43,231 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:09:43,231 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.379310344827586) internal successors, (214), 29 states have internal predecessors, (214), 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 17:09:43,231 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:09:43,231 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:43,231 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:09:43,231 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2025-04-24 17:09:43,232 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:09:52,038 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 45 DAG size of output: 22 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:10:03,800 WARN L286 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 60 DAG size of output: 35 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:10:06,604 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:10:29,258 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:10:31,977 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:10:33,298 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:10:37,841 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:10:38,987 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:10:53,484 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:11:05,758 WARN L286 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 57 DAG size of output: 26 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:11:12,779 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:11:12,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:11:12,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:11:12,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-24 17:11:12,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-04-24 17:11:12,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-24 17:11:12,981 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:11:12,981 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 17:11:12,981 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 17:11:12,981 INFO L139 ounterexampleChecker]: Examining path program with hash 1853161006, occurence #1 [2025-04-24 17:11:12,981 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 17:11:12,981 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 17:11:12,982 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 17:11:12,982 INFO L85 PathProgramCache]: Analyzing trace with hash 270988792, now seen corresponding path program 3 times [2025-04-24 17:11:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 17:11:12,982 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721892469] [2025-04-24 17:11:12,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 17:11:12,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 17:11:12,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 216 statements into 15 equivalence classes. [2025-04-24 17:11:13,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 216 of 216 statements. [2025-04-24 17:11:13,358 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-04-24 17:11:13,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:11:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1116 backedges. 27 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 17:11:30,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 17:11:30,755 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721892469] [2025-04-24 17:11:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721892469] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 17:11:30,755 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570207475] [2025-04-24 17:11:30,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 17:11:30,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 17:11:30,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 17:11:30,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 17:11:30,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-24 17:11:30,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 216 statements into 15 equivalence classes. [2025-04-24 17:11:32,986 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 216 of 216 statements. [2025-04-24 17:11:32,986 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-04-24 17:11:32,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 17:11:32,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 91 conjuncts are in the unsatisfiable core [2025-04-24 17:11:32,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 17:13:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1116 backedges. 8 proven. 1108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 17:13:26,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 17:13:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1116 backedges. 8 proven. 1108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 17:13:57,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570207475] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 17:13:57,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 17:13:57,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 48] total 143 [2025-04-24 17:13:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102250119] [2025-04-24 17:13:57,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 17:13:57,083 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2025-04-24 17:13:57,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 17:13:57,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2025-04-24 17:13:57,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2392, Invalid=17888, Unknown=26, NotChecked=0, Total=20306 [2025-04-24 17:13:57,091 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:13:57,091 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 17:13:57,092 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 4.335664335664336) internal successors, (620), 143 states have internal predecessors, (620), 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 17:13:57,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 17:13:57,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:13:57,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 17:13:57,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2025-04-24 17:13:57,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2025-04-24 17:13:57,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 17:14:23,267 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:14:27,287 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:14:50,467 WARN L286 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 57 DAG size of output: 24 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:14:55,909 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 54 DAG size of output: 37 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:15:12,971 WARN L286 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 70 DAG size of output: 41 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:15:19,803 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 65 DAG size of output: 37 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:15:26,072 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:15:30,627 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:15:54,423 WARN L286 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 80 DAG size of output: 43 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:15:55,460 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:16:06,223 WARN L286 SmtUtils]: Spent 9.75s on a formula simplification. DAG size of input: 52 DAG size of output: 40 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:16:25,863 WARN L286 SmtUtils]: Spent 12.35s on a formula simplification. DAG size of input: 65 DAG size of output: 35 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:16:36,243 WARN L286 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 62 DAG size of output: 45 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:16:38,127 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:16:40,260 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:16:50,525 WARN L286 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 71 DAG size of output: 42 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:17:12,745 WARN L286 SmtUtils]: Spent 18.53s on a formula simplification. DAG size of input: 87 DAG size of output: 57 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:17:24,029 WARN L286 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 83 DAG size of output: 38 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:17:28,180 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:00,569 WARN L286 SmtUtils]: Spent 17.37s on a formula simplification. DAG size of input: 80 DAG size of output: 60 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:18:05,395 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:09,400 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:13,541 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:18,828 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:25,147 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:29,562 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:33,769 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-24 17:18:51,689 WARN L286 SmtUtils]: Spent 13.08s on a formula simplification. DAG size of input: 87 DAG size of output: 51 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 17:19:10,425 WARN L286 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 59 DAG size of output: 39 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)