./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 01849734 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread/stack_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-0184973-m [2025-04-24 16:07:06,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 16:07:06,319 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 16:07:06,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 16:07:06,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 16:07:06,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 16:07:06,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 16:07:06,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 16:07:06,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 16:07:06,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 16:07:06,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 16:07:06,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 16:07:06,342 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 16:07:06,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 16:07:06,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 16:07:06,342 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 16:07:06,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 16:07:06,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 16:07:06,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 16:07:06,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 16:07:06,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 16:07:06,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 16:07:06,344 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 16:07:06,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 16:07:06,344 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 16:07:06,344 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 16:07:06,344 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 16:07:06,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:07:06,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:07:06,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:07:06,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:07:06,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 16:07:06,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:07:06,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:07:06,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:07:06,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:07:06,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 16:07:06,346 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 16:07:06,346 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 -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2025-04-24 16:07:06,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 16:07:06,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 16:07:06,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 16:07:06,641 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 16:07:06,642 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 16:07:06,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2025-04-24 16:07:07,973 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/736c3b82c/60cb587dc06a40dd940ed381782a9464/FLAG6154756db [2025-04-24 16:07:08,207 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 16:07:08,209 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2025-04-24 16:07:08,222 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/736c3b82c/60cb587dc06a40dd940ed381782a9464/FLAG6154756db [2025-04-24 16:07:09,023 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/736c3b82c/60cb587dc06a40dd940ed381782a9464 [2025-04-24 16:07:09,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 16:07:09,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 16:07:09,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 16:07:09,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 16:07:09,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 16:07:09,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1936c7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09, skipping insertion in model container [2025-04-24 16:07:09,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 16:07:09,360 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2025-04-24 16:07:09,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:07:09,417 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 16:07:09,488 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2025-04-24 16:07:09,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:07:09,595 INFO L204 MainTranslator]: Completed translation [2025-04-24 16:07:09,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09 WrapperNode [2025-04-24 16:07:09,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 16:07:09,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 16:07:09,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 16:07:09,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 16:07:09,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,659 INFO L138 Inliner]: procedures = 277, calls = 430, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 539 [2025-04-24 16:07:09,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 16:07:09,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 16:07:09,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 16:07:09,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 16:07:09,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,688 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 16:07:09,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 16:07:09,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 16:07:09,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 16:07:09,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (1/1) ... [2025-04-24 16:07:09,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:07:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:07:09,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 16:07:09,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 16:07:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-24 16:07:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-24 16:07:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-24 16:07:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-24 16:07:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 16:07:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 16:07:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 16:07:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 16:07:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 16:07:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 16:07:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 16:07:09,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 16:07:09,760 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 16:07:09,860 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 16:07:09,861 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 16:07:10,490 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 16:07:10,491 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 16:07:13,547 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 16:07:13,547 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 16:07:13,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:07:13 BoogieIcfgContainer [2025-04-24 16:07:13,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 16:07:13,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 16:07:13,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 16:07:13,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 16:07:13,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 04:07:09" (1/3) ... [2025-04-24 16:07:13,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f422a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:07:13, skipping insertion in model container [2025-04-24 16:07:13,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:07:09" (2/3) ... [2025-04-24 16:07:13,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f422a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:07:13, skipping insertion in model container [2025-04-24 16:07:13,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:07:13" (3/3) ... [2025-04-24 16:07:13,554 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2025-04-24 16:07:13,564 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 16:07:13,566 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-2.i that has 3 procedures, 30 locations, 32 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-24 16:07:13,566 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 16:07:13,613 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-24 16:07:13,640 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:07:13,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 16:07:13,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:07:13,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 16:07:13,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 16:07:13,711 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 16:07:13,724 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2025-04-24 16:07:13,730 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;@3a506462, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:07:13,730 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 16:07:13,793 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:13,793 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:13,793 INFO L139 ounterexampleChecker]: Examining path program with hash 1039645209, occurence #1 [2025-04-24 16:07:13,793 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:07:13,793 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:13,796 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -858411651, now seen corresponding path program 1 times [2025-04-24 16:07:13,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:13,803 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757294061] [2025-04-24 16:07:13,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:07:13,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:13,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-24 16:07:13,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-24 16:07:13,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:07:13,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:07:14,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:14,339 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757294061] [2025-04-24 16:07:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757294061] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:07:14,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:07:14,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 16:07:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372355641] [2025-04-24 16:07:14,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:07:14,343 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 16:07:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:14,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 16:07:14,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 16:07:14,359 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:14,360 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:14,362 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:14,362 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:14,468 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:14,468 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 16:07:14,468 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:14,469 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:14,469 INFO L139 ounterexampleChecker]: Examining path program with hash 1898228608, occurence #1 [2025-04-24 16:07:14,469 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:07:14,469 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:14,469 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:14,469 INFO L85 PathProgramCache]: Analyzing trace with hash -852390286, now seen corresponding path program 1 times [2025-04-24 16:07:14,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:14,469 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026089151] [2025-04-24 16:07:14,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:07:14,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:14,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 16:07:14,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 16:07:14,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:07:14,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:07:14,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:14,664 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026089151] [2025-04-24 16:07:14,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026089151] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:07:14,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:07:14,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 16:07:14,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898303430] [2025-04-24 16:07:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:07:14,665 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 16:07:14,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:14,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 16:07:14,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 16:07:14,667 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:14,668 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:14,668 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:14,668 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:14,668 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:14,809 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:14,809 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:14,809 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 16:07:14,809 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:14,809 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:14,810 INFO L139 ounterexampleChecker]: Examining path program with hash 626696370, occurence #1 [2025-04-24 16:07:14,810 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:07:14,810 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:14,810 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1806552881, now seen corresponding path program 1 times [2025-04-24 16:07:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:14,810 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645854825] [2025-04-24 16:07:14,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:07:14,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:14,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 16:07:14,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 16:07:14,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:07:14,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:07:14,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:14,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645854825] [2025-04-24 16:07:14,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645854825] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:07:14,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:07:14,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 16:07:14,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343712042] [2025-04-24 16:07:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:07:14,993 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 16:07:14,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:14,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 16:07:14,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 16:07:14,994 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:14,994 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:14,994 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:14,994 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:14,994 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:14,994 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:15,045 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:15,046 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:15,046 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:15,046 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 16:07:15,046 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:15,046 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:15,046 INFO L139 ounterexampleChecker]: Examining path program with hash 808838771, occurence #1 [2025-04-24 16:07:15,046 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:07:15,046 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:15,047 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:15,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1067933597, now seen corresponding path program 1 times [2025-04-24 16:07:15,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:15,047 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906373266] [2025-04-24 16:07:15,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:07:15,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:15,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 16:07:15,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 16:07:15,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:07:15,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:07:15,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:15,361 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906373266] [2025-04-24 16:07:15,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906373266] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:07:15,361 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901729774] [2025-04-24 16:07:15,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:07:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:15,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:07:15,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:07:15,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-24 16:07:15,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 16:07:15,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 16:07:15,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:07:15,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:15,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-24 16:07:15,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:07:15,592 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:07:15,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:07:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:07:15,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901729774] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:07:15,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:07:15,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-04-24 16:07:15,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770431489] [2025-04-24 16:07:15,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:07:15,830 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-24 16:07:15,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:15,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-24 16:07:15,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-04-24 16:07:15,831 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:15,831 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:15,831 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:15,831 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:15,831 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:15,832 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:15,832 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:16,035 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:16,035 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:16,035 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:16,035 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:16,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-24 16:07:16,236 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:16,236 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:16,236 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:16,236 INFO L139 ounterexampleChecker]: Examining path program with hash -289913407, occurence #1 [2025-04-24 16:07:16,237 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:07:16,237 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:16,237 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash 953415162, now seen corresponding path program 1 times [2025-04-24 16:07:16,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:16,237 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530072449] [2025-04-24 16:07:16,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:07:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:16,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-04-24 16:07:16,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-04-24 16:07:16,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:07:16,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-24 16:07:16,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:16,772 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530072449] [2025-04-24 16:07:16,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530072449] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:07:16,772 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393252818] [2025-04-24 16:07:16,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:07:16,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:16,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:07:16,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:07:16,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-24 16:07:16,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-04-24 16:07:16,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-04-24 16:07:16,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:07:16,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:17,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-24 16:07:17,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:07:17,025 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:17,061 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:17,103 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-24 16:07:17,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:07:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-24 16:07:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393252818] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:07:17,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:07:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-04-24 16:07:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963867990] [2025-04-24 16:07:17,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:07:17,339 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-24 16:07:17,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:17,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-24 16:07:17,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-04-24 16:07:17,341 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:17,341 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:17,341 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:17,341 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:17,341 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:17,342 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:17,342 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:17,342 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:17,708 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:17,708 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:17,708 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:17,708 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:17,709 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-24 16:07:17,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-24 16:07:17,913 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:17,913 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:17,913 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:17,913 INFO L139 ounterexampleChecker]: Examining path program with hash -289913407, occurence #2 [2025-04-24 16:07:17,913 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:07:17,913 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 16:07:17,915 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:07:17,915 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-24 16:07:17,915 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:07:17,916 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-04-24 16:07:17,916 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,916 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 61 [2025-04-24 16:07:17,920 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,920 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 84 [2025-04-24 16:07:17,920 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,920 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 90 [2025-04-24 16:07:17,920 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,920 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 96 [2025-04-24 16:07:17,920 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,920 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 102 [2025-04-24 16:07:17,920 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,920 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 108 [2025-04-24 16:07:17,921 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,921 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 114 [2025-04-24 16:07:17,921 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,921 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 120 [2025-04-24 16:07:17,921 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,921 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 126 [2025-04-24 16:07:17,921 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:17,921 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:07:17,921 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:17,921 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1403899351, now seen corresponding path program 2 times [2025-04-24 16:07:17,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:17,922 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433292562] [2025-04-24 16:07:17,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 16:07:17,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:17,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-04-24 16:07:18,026 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-04-24 16:07:18,026 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 16:07:18,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 9 proven. 192 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-04-24 16:07:19,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:19,157 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433292562] [2025-04-24 16:07:19,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433292562] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:07:19,157 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819909417] [2025-04-24 16:07:19,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 16:07:19,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:19,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:07:19,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:07:19,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-24 16:07:19,283 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-04-24 16:07:19,439 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-04-24 16:07:19,439 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 16:07:19,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:19,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-24 16:07:19,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:07:19,478 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,518 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,590 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,641 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,683 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,724 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,778 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,826 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,873 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,916 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 66 proven. 195 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-04-24 16:07:19,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:07:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 9 proven. 192 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-04-24 16:07:20,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819909417] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:07:20,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:07:20,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 32 [2025-04-24 16:07:20,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525186445] [2025-04-24 16:07:20,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:07:20,705 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-24 16:07:20,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:20,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-24 16:07:20,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=614, Unknown=0, NotChecked=0, Total=992 [2025-04-24 16:07:20,706 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:20,707 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:20,707 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:20,707 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:20,707 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:20,707 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:20,707 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:20,707 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-04-24 16:07:20,707 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:22,014 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:22,014 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:22,014 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:22,015 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:22,015 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-24 16:07:22,015 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-04-24 16:07:22,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-24 16:07:22,215 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:22,215 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:22,215 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:22,216 INFO L139 ounterexampleChecker]: Examining path program with hash -289913407, occurence #3 [2025-04-24 16:07:22,216 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:07:22,216 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 16:07:22,216 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:07:22,216 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-24 16:07:22,216 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:07:22,216 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-04-24 16:07:22,216 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,216 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 145 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 168 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 174 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 180 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 186 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 192 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 198 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 204 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 210 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 216 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 222 [2025-04-24 16:07:22,219 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,219 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 228 [2025-04-24 16:07:22,220 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,220 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 234 [2025-04-24 16:07:22,220 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,220 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 240 [2025-04-24 16:07:22,220 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,220 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 246 [2025-04-24 16:07:22,220 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,220 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 252 [2025-04-24 16:07:22,222 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,222 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 258 [2025-04-24 16:07:22,222 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,222 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 264 [2025-04-24 16:07:22,222 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,222 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 270 [2025-04-24 16:07:22,222 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:22,222 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:07:22,222 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:22,223 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:22,223 INFO L85 PathProgramCache]: Analyzing trace with hash -780054126, now seen corresponding path program 3 times [2025-04-24 16:07:22,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:22,223 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216684169] [2025-04-24 16:07:22,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 16:07:22,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:22,272 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 276 statements into 19 equivalence classes. [2025-04-24 16:07:23,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 240 of 276 statements. [2025-04-24 16:07:23,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-04-24 16:07:23,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 269 proven. 539 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2025-04-24 16:07:25,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:25,425 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216684169] [2025-04-24 16:07:25,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216684169] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:07:25,425 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178285582] [2025-04-24 16:07:25,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 16:07:25,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:07:25,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:07:25,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-24 16:07:25,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 276 statements into 19 equivalence classes. [2025-04-24 16:07:38,023 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 240 of 276 statements. [2025-04-24 16:07:38,024 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-04-24 16:07:38,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:38,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-24 16:07:38,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:07:38,081 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:38,136 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:38,167 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:38,202 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 385 proven. 66 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2025-04-24 16:07:38,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:07:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 855 proven. 9 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2025-04-24 16:07:38,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178285582] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:07:38,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:07:38,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8, 17] total 43 [2025-04-24 16:07:38,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127383768] [2025-04-24 16:07:38,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:07:38,826 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-24 16:07:38,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:38,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-24 16:07:38,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1201, Unknown=0, NotChecked=0, Total=1806 [2025-04-24 16:07:38,828 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:38,828 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:38,828 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.488372093023257) internal successors, (365), 43 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:38,828 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:38,828 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:38,828 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:38,828 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:38,828 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-04-24 16:07:38,828 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2025-04-24 16:07:38,828 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:39,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:39,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:39,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:39,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:39,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-24 16:07:39,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-04-24 16:07:39,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:39,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-24 16:07:39,621 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-04-24 16:07:39,621 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:39,621 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:39,622 INFO L139 ounterexampleChecker]: Examining path program with hash -1055837106, occurence #1 [2025-04-24 16:07:39,622 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:07:39,622 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:39,622 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1303941790, now seen corresponding path program 4 times [2025-04-24 16:07:39,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:39,622 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016899344] [2025-04-24 16:07:39,622 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 16:07:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:39,683 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 359 statements into 2 equivalence classes. [2025-04-24 16:07:40,123 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 359 of 359 statements. [2025-04-24 16:07:40,127 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 16:07:40,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 479 proven. 1260 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-04-24 16:07:49,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:07:49,873 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016899344] [2025-04-24 16:07:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016899344] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:07:49,873 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192039579] [2025-04-24 16:07:49,873 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 16:07:49,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:49,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:07:49,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:07:49,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-24 16:07:50,123 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 359 statements into 2 equivalence classes. [2025-04-24 16:07:50,398 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 359 of 359 statements. [2025-04-24 16:07:50,398 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 16:07:50,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:07:50,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 87 conjuncts are in the unsatisfiable core [2025-04-24 16:07:50,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:07:50,451 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,512 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,547 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,634 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,684 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,705 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,744 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,775 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,864 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,940 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,960 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:50,981 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,011 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,118 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,198 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,266 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,285 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,327 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,351 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,501 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 19 [2025-04-24 16:07:51,529 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,558 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,584 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,610 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,644 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,673 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,710 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,742 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,770 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,814 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,848 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,890 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,933 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:51,965 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:52,002 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:52,050 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 16:07:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 21 proven. 1767 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-04-24 16:07:52,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:07:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 427 proven. 1106 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2025-04-24 16:07:52,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192039579] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:07:52,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:07:52,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39, 24] total 94 [2025-04-24 16:07:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154410857] [2025-04-24 16:07:52,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:07:52,925 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2025-04-24 16:07:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:07:52,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2025-04-24 16:07:52,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2608, Invalid=6134, Unknown=0, NotChecked=0, Total=8742 [2025-04-24 16:07:52,930 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:52,930 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:07:52,931 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 6.329787234042553) internal successors, (595), 94 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 83 states. [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:52,931 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:07:57,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2025-04-24 16:07:57,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-24 16:07:57,426 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:07:57,427 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 16:07:57,427 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:07:57,427 INFO L139 ounterexampleChecker]: Examining path program with hash -1055837106, occurence #2 [2025-04-24 16:07:57,427 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:07:57,427 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 16:07:57,427 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:07:57,427 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-24 16:07:57,427 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:07:57,427 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-04-24 16:07:57,427 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,427 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 31 [2025-04-24 16:07:57,429 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,429 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 35 [2025-04-24 16:07:57,429 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,429 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2025-04-24 16:07:57,429 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,429 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 56 [2025-04-24 16:07:57,429 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,429 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 64 [2025-04-24 16:07:57,431 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,431 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 81 [2025-04-24 16:07:57,431 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,431 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 95 [2025-04-24 16:07:57,433 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,433 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 99 [2025-04-24 16:07:57,433 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,433 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 107 [2025-04-24 16:07:57,433 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,433 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 120 [2025-04-24 16:07:57,433 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,433 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 128 [2025-04-24 16:07:57,433 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,433 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 129 [2025-04-24 16:07:57,437 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,437 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 148 [2025-04-24 16:07:57,437 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,437 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 153 [2025-04-24 16:07:57,440 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,440 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 157 [2025-04-24 16:07:57,440 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,440 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 165 [2025-04-24 16:07:57,440 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,440 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 178 [2025-04-24 16:07:57,440 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,440 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 186 [2025-04-24 16:07:57,440 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,440 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 187 [2025-04-24 16:07:57,442 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,442 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 206 [2025-04-24 16:07:57,442 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,442 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 211 [2025-04-24 16:07:57,443 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,443 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 215 [2025-04-24 16:07:57,443 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,443 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 223 [2025-04-24 16:07:57,443 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,443 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 236 [2025-04-24 16:07:57,443 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,443 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 244 [2025-04-24 16:07:57,443 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,443 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 245 [2025-04-24 16:07:57,445 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,445 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 257 [2025-04-24 16:07:57,445 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,445 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 259 [2025-04-24 16:07:57,445 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,445 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 264 [2025-04-24 16:07:57,446 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,446 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 283 [2025-04-24 16:07:57,446 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,446 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 289 [2025-04-24 16:07:57,446 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,446 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 295 [2025-04-24 16:07:57,446 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,446 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 300 [2025-04-24 16:07:57,448 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,448 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 304 [2025-04-24 16:07:57,448 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,448 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 312 [2025-04-24 16:07:57,448 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,448 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 325 [2025-04-24 16:07:57,448 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,448 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 333 [2025-04-24 16:07:57,448 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,448 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 334 [2025-04-24 16:07:57,449 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,449 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 339 [2025-04-24 16:07:57,449 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,449 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 345 [2025-04-24 16:07:57,449 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 351 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 357 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 363 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 369 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 375 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 381 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 387 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 393 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 399 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 405 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 411 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 417 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 423 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 429 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 435 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 441 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 447 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 453 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 459 [2025-04-24 16:07:57,450 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,450 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 465 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 471 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 477 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 483 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 489 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 495 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 501 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 507 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 513 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 519 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 525 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 531 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 537 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 543 [2025-04-24 16:07:57,451 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:07:57,451 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:07:57,451 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:07:57,452 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:07:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash 296226934, now seen corresponding path program 5 times [2025-04-24 16:07:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:07:57,452 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611150832] [2025-04-24 16:07:57,452 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 16:07:57,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:07:57,536 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 549 statements into 35 equivalence classes. [2025-04-24 16:07:59,830 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 487 of 549 statements. [2025-04-24 16:07:59,831 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-04-24 16:07:59,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:08:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 949 proven. 668 refuted. 0 times theorem prover too weak. 3640 trivial. 0 not checked. [2025-04-24 16:08:07,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:08:07,333 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611150832] [2025-04-24 16:08:07,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611150832] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:08:07,334 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073065262] [2025-04-24 16:08:07,334 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 16:08:07,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:08:07,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:08:07,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:08:07,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-24 16:08:07,665 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 549 statements into 35 equivalence classes.