./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 44c38e66 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/queue_ok_longer.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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 18:27:26,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 18:27:26,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 18:27:26,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 18:27:26,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 18:27:26,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 18:27:26,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 18:27:26,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 18:27:26,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 18:27:26,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 18:27:26,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 18:27:26,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 18:27:26,986 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:26,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:26,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 18:27:26,986 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 18:27:26,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 18:27:26,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 18:27:26,987 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 18:27:26,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 18:27:26,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 18:27:26,987 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 18:27:26,987 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 18:27:26,987 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 -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2025-04-24 18:27:27,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 18:27:27,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 18:27:27,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 18:27:27,258 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 18:27:27,259 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 18:27:27,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/queue_ok_longer.i [2025-04-24 18:27:28,559 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fdb8ca8dd/e03f4e51f13043a9a6ced233463be45b/FLAG2f18047bb [2025-04-24 18:27:28,804 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 18:27:28,804 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2025-04-24 18:27:28,819 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fdb8ca8dd/e03f4e51f13043a9a6ced233463be45b/FLAG2f18047bb [2025-04-24 18:27:29,760 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fdb8ca8dd/e03f4e51f13043a9a6ced233463be45b [2025-04-24 18:27:29,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 18:27:29,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 18:27:29,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 18:27:29,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 18:27:29,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 18:27:29,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:27:29" (1/1) ... [2025-04-24 18:27:29,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6362dde5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:29, skipping insertion in model container [2025-04-24 18:27:29,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:27:29" (1/1) ... [2025-04-24 18:27:29,797 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 18:27:30,091 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/queue_ok_longer.i[43272,43285] [2025-04-24 18:27:30,100 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/queue_ok_longer.i[43545,43558] [2025-04-24 18:27:30,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:27:30,142 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 18:27:30,212 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/queue_ok_longer.i[43272,43285] [2025-04-24 18:27:30,216 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/queue_ok_longer.i[43545,43558] [2025-04-24 18:27:30,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:27:30,308 INFO L204 MainTranslator]: Completed translation [2025-04-24 18:27:30,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30 WrapperNode [2025-04-24 18:27:30,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 18:27:30,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 18:27:30,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 18:27:30,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 18:27:30,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,429 INFO L138 Inliner]: procedures = 274, calls = 852, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 991 [2025-04-24 18:27:30,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 18:27:30,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 18:27:30,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 18:27:30,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 18:27:30,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,482 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 18:27:30,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 18:27:30,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 18:27:30,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 18:27:30,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (1/1) ... [2025-04-24 18:27:30,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:30,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:30,538 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 18:27:30,541 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 18:27:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-24 18:27:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-24 18:27:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 18:27:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 18:27:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 18:27:30,560 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 18:27:30,678 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 18:27:30,680 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 18:27:31,599 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 18:27:31,600 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 18:27:35,875 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 18:27:35,876 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 18:27:35,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:35 BoogieIcfgContainer [2025-04-24 18:27:35,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 18:27:35,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 18:27:35,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 18:27:35,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 18:27:35,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 06:27:29" (1/3) ... [2025-04-24 18:27:35,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94a2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:27:35, skipping insertion in model container [2025-04-24 18:27:35,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:30" (2/3) ... [2025-04-24 18:27:35,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94a2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:27:35, skipping insertion in model container [2025-04-24 18:27:35,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:35" (3/3) ... [2025-04-24 18:27:35,885 INFO L128 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2025-04-24 18:27:35,897 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 18:27:35,899 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG queue_ok_longer.i that has 3 procedures, 34 locations, 38 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-24 18:27:35,899 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 18:27:35,963 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-24 18:27:35,997 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:35,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 18:27:35,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:36,002 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 18:27:36,004 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 18:27:36,076 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:27:36,088 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 18:27:36,095 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;@25c48b6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:36,096 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-24 18:27:36,106 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 18:27:36,107 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:36,107 INFO L139 ounterexampleChecker]: Examining path program with hash 1821233462, occurence #1 [2025-04-24 18:27:36,107 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:36,107 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:36,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2104929, now seen corresponding path program 1 times [2025-04-24 18:27:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:36,117 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930597532] [2025-04-24 18:27:36,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:36,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-24 18:27:36,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-24 18:27:36,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:36,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:36,489 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 18:27:36,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:36,496 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930597532] [2025-04-24 18:27:36,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930597532] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:36,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:36,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 18:27:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541723698] [2025-04-24 18:27:36,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:36,500 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-24 18:27:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:36,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-24 18:27:36,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-24 18:27:36,514 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:36,515 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:36,516 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 18:27:36,516 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:36,837 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:36,839 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-24 18:27:36,841 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-24 18:27:36,841 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-24 18:27:36,841 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 18:27:36,848 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-24 18:27:36,850 INFO L320 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE,SAFE (1/2) [2025-04-24 18:27:36,855 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:36,856 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:27:36,859 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Thread1of1ForFork0 ======== [2025-04-24 18:27:36,860 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;@25c48b6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:36,860 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:27:36,871 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:36,872 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:36,872 INFO L139 ounterexampleChecker]: Examining path program with hash 823111694, occurence #1 [2025-04-24 18:27:36,872 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:36,872 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:36,872 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 450445929, now seen corresponding path program 1 times [2025-04-24 18:27:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:36,872 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23967357] [2025-04-24 18:27:36,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:36,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:36,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-24 18:27:36,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-24 18:27:36,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:36,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:36,994 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 18:27:36,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:36,994 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23967357] [2025-04-24 18:27:36,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23967357] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:36,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:36,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 18:27:36,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281682516] [2025-04-24 18:27:36,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:36,995 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-24 18:27:36,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:36,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-24 18:27:36,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-24 18:27:36,996 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:36,996 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:36,996 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 18:27:36,996 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:37,174 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:37,174 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 18:27:37,175 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:37,175 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:37,175 INFO L139 ounterexampleChecker]: Examining path program with hash 977379421, occurence #1 [2025-04-24 18:27:37,175 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:37,175 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:37,175 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1031018878, now seen corresponding path program 1 times [2025-04-24 18:27:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:37,176 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087942197] [2025-04-24 18:27:37,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:37,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-24 18:27:37,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-24 18:27:37,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:37,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:37,447 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 18:27:37,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:37,448 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087942197] [2025-04-24 18:27:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087942197] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:37,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:37,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 18:27:37,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333401476] [2025-04-24 18:27:37,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:37,448 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 18:27:37,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:37,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 18:27:37,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 18:27:37,448 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:37,449 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:37,449 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 18:27:37,449 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:37,449 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,007 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,007 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:38,007 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 18:27:38,007 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:38,008 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:38,008 INFO L139 ounterexampleChecker]: Examining path program with hash 884934087, occurence #1 [2025-04-24 18:27:38,008 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:38,008 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:38,008 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1579228496, now seen corresponding path program 1 times [2025-04-24 18:27:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:38,008 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179459365] [2025-04-24 18:27:38,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:38,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-24 18:27:38,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-24 18:27:38,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:38,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:38,279 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 18:27:38,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:38,279 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179459365] [2025-04-24 18:27:38,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179459365] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:38,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:38,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 18:27:38,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838785256] [2025-04-24 18:27:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:38,280 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 18:27:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:38,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 18:27:38,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 18:27:38,280 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,280 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:38,281 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 18:27:38,281 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,281 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:38,281 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,645 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:38,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:38,646 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-24 18:27:38,646 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:38,646 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:38,646 INFO L139 ounterexampleChecker]: Examining path program with hash -798465141, occurence #1 [2025-04-24 18:27:38,646 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:38,646 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:38,647 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:38,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1011581384, now seen corresponding path program 2 times [2025-04-24 18:27:38,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:38,647 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984347612] [2025-04-24 18:27:38,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 18:27:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:38,671 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-04-24 18:27:38,686 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-24 18:27:38,687 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-24 18:27:38,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:38,892 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 18:27:38,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:38,892 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984347612] [2025-04-24 18:27:38,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984347612] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:38,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:38,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 18:27:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520804387] [2025-04-24 18:27:38,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:38,892 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 18:27:38,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:38,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 18:27:38,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 18:27:38,893 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,893 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:38,893 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 18:27:38,893 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:38,893 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:38,893 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:38,893 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:39,274 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:39,274 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,274 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,275 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,275 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-24 18:27:39,275 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:39,275 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:39,275 INFO L139 ounterexampleChecker]: Examining path program with hash -798465141, occurence #2 [2025-04-24 18:27:39,275 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:27:39,276 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-04-24 18:27:39,276 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:39,276 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:27:39,276 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:39,277 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-04-24 18:27:39,284 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:39,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-04-24 18:27:39,285 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:39,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-04-24 18:27:39,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:39,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-04-24 18:27:39,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:39,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-04-24 18:27:39,295 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:39,295 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:27:39,295 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:39,295 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:39,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1515960012, now seen corresponding path program 1 times [2025-04-24 18:27:39,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:39,296 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434557362] [2025-04-24 18:27:39,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:39,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:39,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 18:27:39,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 18:27:39,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:39,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:39,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:39,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434557362] [2025-04-24 18:27:39,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434557362] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:27:39,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664514652] [2025-04-24 18:27:39,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:39,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:39,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:39,443 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 18:27:39,445 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 18:27:39,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 18:27:39,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 18:27:39,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:39,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:39,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-24 18:27:39,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:27:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:39,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:27:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664514652] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:27:39,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:27:39,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-24 18:27:39,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483242487] [2025-04-24 18:27:39,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:27:39,735 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-24 18:27:39,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:39,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-24 18:27:39,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-24 18:27:39,735 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:39,735 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:39,735 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 18:27:39,736 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:39,736 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,736 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,736 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,736 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:39,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:39,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:39,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:39,937 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 18:27:40,130 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-04-24 18:27:40,130 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:40,130 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:40,130 INFO L139 ounterexampleChecker]: Examining path program with hash -798465141, occurence #3 [2025-04-24 18:27:40,130 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:27:40,130 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-04-24 18:27:40,130 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:40,130 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:27:40,130 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:40,130 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-04-24 18:27:40,131 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:40,131 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-04-24 18:27:40,131 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:40,131 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15 [2025-04-24 18:27:40,131 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:40,131 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16 [2025-04-24 18:27:40,131 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:40,131 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-04-24 18:27:40,144 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:40,144 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:27:40,144 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:40,144 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash 804781256, now seen corresponding path program 2 times [2025-04-24 18:27:40,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:40,144 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644162394] [2025-04-24 18:27:40,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 18:27:40,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:40,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-24 18:27:40,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-24 18:27:40,258 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 18:27:40,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:40,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:40,436 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644162394] [2025-04-24 18:27:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644162394] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:27:40,436 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461648709] [2025-04-24 18:27:40,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 18:27:40,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:40,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:40,438 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 18:27:40,440 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 18:27:40,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-24 18:27:40,787 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-24 18:27:40,787 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 18:27:40,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:40,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-24 18:27:40,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:27:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:40,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:27:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461648709] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:27:40,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:27:40,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-24 18:27:40,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829147690] [2025-04-24 18:27:40,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:27:40,855 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-24 18:27:40,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:40,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-24 18:27:40,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-24 18:27:40,856 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:40,856 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:40,856 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 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 18:27:40,856 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:40,856 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:40,856 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:40,857 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:40,857 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:40,857 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:41,400 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:41,400 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:41,400 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:41,400 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:41,400 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:41,400 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-24 18:27:41,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-24 18:27:41,601 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:41,601 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:41,601 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:41,601 INFO L139 ounterexampleChecker]: Examining path program with hash -798465141, occurence #4 [2025-04-24 18:27:41,601 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:27:41,602 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-04-24 18:27:41,602 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:41,602 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:27:41,602 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:41,602 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-04-24 18:27:41,602 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:41,602 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-04-24 18:27:41,602 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:41,602 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 21 [2025-04-24 18:27:41,602 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:41,602 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 22 [2025-04-24 18:27:41,602 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:41,602 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-04-24 18:27:41,612 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:41,612 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:27:41,612 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:41,612 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1124230472, now seen corresponding path program 3 times [2025-04-24 18:27:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:41,612 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297881176] [2025-04-24 18:27:41,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 18:27:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:41,643 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 6 equivalence classes. [2025-04-24 18:27:42,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 33 of 33 statements. [2025-04-24 18:27:42,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-24 18:27:42,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:42,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:42,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297881176] [2025-04-24 18:27:42,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297881176] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:27:42,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596944707] [2025-04-24 18:27:42,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 18:27:42,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:42,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:42,820 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 18:27:42,822 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 18:27:42,921 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 6 equivalence classes. [2025-04-24 18:27:53,204 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 33 of 33 statements. [2025-04-24 18:27:53,204 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-24 18:27:53,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:53,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-24 18:27:53,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:27:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:53,258 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:27:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596944707] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:27:53,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:27:53,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-04-24 18:27:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915014826] [2025-04-24 18:27:53,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:27:53,429 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-24 18:27:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:53,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-24 18:27:53,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-04-24 18:27:53,431 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:53,431 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:53,431 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 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 18:27:53,431 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:53,431 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:53,431 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:53,431 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:53,431 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:53,431 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-04-24 18:27:53,431 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:54,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:54,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:54,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:54,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:54,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:54,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-24 18:27:54,022 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-24 18:27:54,051 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 18:27:54,223 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:54,223 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:54,223 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:54,223 INFO L139 ounterexampleChecker]: Examining path program with hash -798465141, occurence #5 [2025-04-24 18:27:54,223 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:27:54,223 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-04-24 18:27:54,223 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:54,223 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:27:54,223 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:54,223 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-04-24 18:27:54,223 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:54,223 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-04-24 18:27:54,223 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:54,223 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 33 [2025-04-24 18:27:54,223 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:54,223 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 34 [2025-04-24 18:27:54,223 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:54,224 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 35 [2025-04-24 18:27:54,232 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:54,232 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:27:54,232 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:54,232 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:54,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1309796792, now seen corresponding path program 4 times [2025-04-24 18:27:54,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:54,233 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499498115] [2025-04-24 18:27:54,233 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 18:27:54,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:54,276 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-24 18:27:54,312 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-24 18:27:54,312 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 18:27:54,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:55,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:55,295 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499498115] [2025-04-24 18:27:55,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499498115] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:27:55,295 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352246038] [2025-04-24 18:27:55,295 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 18:27:55,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:55,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:55,297 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 18:27:55,298 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 18:27:55,456 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-04-24 18:27:55,676 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-04-24 18:27:55,676 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 18:27:55,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:55,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-24 18:27:55,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:27:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:55,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:27:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:56,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352246038] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:27:56,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:27:56,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-04-24 18:27:56,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953399949] [2025-04-24 18:27:56,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:27:56,328 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-04-24 18:27:56,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:56,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-04-24 18:27:56,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-04-24 18:27:56,330 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:56,330 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:56,330 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 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 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-04-24 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2025-04-24 18:27:56,330 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:56,946 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:56,947 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:56,947 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:56,947 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:27:56,947 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:56,947 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-24 18:27:56,947 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-24 18:27:56,947 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-04-24 18:27:56,959 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 18:27:57,147 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,SelfDestructingSolverStorable8 [2025-04-24 18:27:57,148 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:57,148 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:57,148 INFO L139 ounterexampleChecker]: Examining path program with hash -798465141, occurence #6 [2025-04-24 18:27:57,148 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:27:57,148 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-04-24 18:27:57,148 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:57,148 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:27:57,148 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:57,148 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-04-24 18:27:57,148 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:57,148 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-04-24 18:27:57,148 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:27:57,148 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 57 [2025-04-24 18:27:57,148 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:57,148 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 58 [2025-04-24 18:27:57,148 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:57,148 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 59 [2025-04-24 18:27:57,161 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:27:57,162 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:27:57,162 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:57,162 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 855701576, now seen corresponding path program 5 times [2025-04-24 18:27:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:57,162 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547535474] [2025-04-24 18:27:57,162 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 18:27:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:57,258 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 69 statements into 24 equivalence classes. [2025-04-24 18:28:01,980 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 69 of 69 statements. [2025-04-24 18:28:01,980 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-04-24 18:28:01,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:28:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:04,073 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547535474] [2025-04-24 18:28:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547535474] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:28:04,073 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455874726] [2025-04-24 18:28:04,073 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 18:28:04,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:04,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:04,075 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 18:28:04,076 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 18:28:04,280 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 69 statements into 24 equivalence classes.