./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:48:41,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:48:41,927 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:48:41,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:48:41,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:48:41,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:48:41,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:48:41,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:48:41,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:48:41,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:48:41,956 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:48:41,957 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:48:41,957 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:48:41,957 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:48:41,957 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:48:41,957 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:48:41,957 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:48:41,957 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:48:41,957 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:48:41,958 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:48:41,958 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:48:41,958 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:48:41,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:48:41,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:48:41,959 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:48:41,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:48:41,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:48:41,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:48:41,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:48:41,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:48:41,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:48:41,960 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:48:41,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:48:41,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:48:41,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:48:41,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:48:41,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:48:41,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:48:41,961 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2024-11-14 04:48:42,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:48:42,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:48:42,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:48:42,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:48:42,345 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:48:42,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c Unable to find full path for "g++" [2024-11-14 04:48:44,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:48:44,932 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:48:44,934 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2024-11-14 04:48:44,962 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/data/b853d3d03/479161fffb114a44b65301f4b342a855/FLAG967f4f6c7 [2024-11-14 04:48:44,979 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/data/b853d3d03/479161fffb114a44b65301f4b342a855 [2024-11-14 04:48:44,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:48:44,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:48:44,987 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:48:44,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:48:44,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:48:44,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:48:44" (1/1) ... [2024-11-14 04:48:44,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585821ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:44, skipping insertion in model container [2024-11-14 04:48:44,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:48:44" (1/1) ... [2024-11-14 04:48:45,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:48:45,342 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2024-11-14 04:48:45,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:48:45,844 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:48:45,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-11-14 04:48:45,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [151] [2024-11-14 04:48:45,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [160] [2024-11-14 04:48:45,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [198] [2024-11-14 04:48:45,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [564] [2024-11-14 04:48:45,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [753] [2024-11-14 04:48:45,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [873] [2024-11-14 04:48:45,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1540] [2024-11-14 04:48:45,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1558] [2024-11-14 04:48:45,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1907] [2024-11-14 04:48:45,863 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2024-11-14 04:48:46,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:48:46,092 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:48:46,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46 WrapperNode [2024-11-14 04:48:46,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:48:46,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:48:46,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:48:46,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:48:46,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,228 INFO L138 Inliner]: procedures = 97, calls = 361, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 1008 [2024-11-14 04:48:46,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:48:46,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:48:46,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:48:46,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:48:46,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:48:46,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:48:46,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:48:46,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:48:46,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (1/1) ... [2024-11-14 04:48:46,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:48:46,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:46,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:48:46,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:48:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-14 04:48:46,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-14 04:48:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-14 04:48:46,436 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-14 04:48:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-14 04:48:46,436 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-14 04:48:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-14 04:48:46,436 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-14 04:48:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 04:48:46,436 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 04:48:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-14 04:48:46,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-14 04:48:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-14 04:48:46,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-14 04:48:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-14 04:48:46,438 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-14 04:48:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-14 04:48:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-14 04:48:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-14 04:48:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-14 04:48:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-14 04:48:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-14 04:48:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-14 04:48:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-14 04:48:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-14 04:48:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-14 04:48:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-14 04:48:46,441 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-14 04:48:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-14 04:48:46,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-14 04:48:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-14 04:48:46,441 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-14 04:48:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:48:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-14 04:48:46,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-14 04:48:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:48:46,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:48:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-14 04:48:46,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-14 04:48:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-14 04:48:46,446 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-14 04:48:46,651 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:48:46,655 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:48:48,794 INFO L? ?]: Removed 497 outVars from TransFormulas that were not future-live. [2024-11-14 04:48:48,795 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:48:50,156 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:48:50,157 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:48:50,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:48:50 BoogieIcfgContainer [2024-11-14 04:48:50,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:48:50,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:48:50,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:48:50,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:48:50,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:48:44" (1/3) ... [2024-11-14 04:48:50,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6bdf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:48:50, skipping insertion in model container [2024-11-14 04:48:50,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:46" (2/3) ... [2024-11-14 04:48:50,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6bdf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:48:50, skipping insertion in model container [2024-11-14 04:48:50,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:48:50" (3/3) ... [2024-11-14 04:48:50,173 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2024-11-14 04:48:50,196 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:48:50,203 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product32.cil.c that has 30 procedures, 434 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:48:50,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:48:50,309 INFO L333 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=FINITE_AUTOMATA, 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;@54e3aa00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:48:50,310 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:48:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2024-11-14 04:48:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 04:48:50,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:50,332 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:50,333 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:50,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 795519951, now seen corresponding path program 1 times [2024-11-14 04:48:50,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:50,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559353947] [2024-11-14 04:48:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:50,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:48:51,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:51,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559353947] [2024-11-14 04:48:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559353947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863445550] [2024-11-14 04:48:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:51,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:51,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:51,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:51,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:48:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:52,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:48:52,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:48:52,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863445550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:48:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738879707] [2024-11-14 04:48:52,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:52,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:52,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:52,333 INFO L87 Difference]: Start difference. First operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-14 04:48:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:52,839 INFO L93 Difference]: Finished difference Result 1225 states and 1938 transitions. [2024-11-14 04:48:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2024-11-14 04:48:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:52,882 INFO L225 Difference]: With dead ends: 1225 [2024-11-14 04:48:52,883 INFO L226 Difference]: Without dead ends: 793 [2024-11-14 04:48:52,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:52,902 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 576 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:52,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1297 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:48:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-14 04:48:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 781. [2024-11-14 04:48:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 523 states have (on average 1.5468451242829828) internal successors, (809), 558 states have internal predecessors, (809), 205 states have call successors, (205), 53 states have call predecessors, (205), 52 states have return successors, (207), 197 states have call predecessors, (207), 202 states have call successors, (207) [2024-11-14 04:48:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1221 transitions. [2024-11-14 04:48:53,110 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1221 transitions. Word has length 50 [2024-11-14 04:48:53,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:53,111 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1221 transitions. [2024-11-14 04:48:53,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-14 04:48:53,111 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1221 transitions. [2024-11-14 04:48:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 04:48:53,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:53,117 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:53,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:48:53,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-14 04:48:53,318 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:53,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash 588883069, now seen corresponding path program 1 times [2024-11-14 04:48:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381415634] [2024-11-14 04:48:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:48:53,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:53,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381415634] [2024-11-14 04:48:53,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381415634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:53,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871535547] [2024-11-14 04:48:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:53,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:53,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:53,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:48:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:54,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:48:54,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:48:54,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871535547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:48:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123996864] [2024-11-14 04:48:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:54,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:54,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:54,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:54,583 INFO L87 Difference]: Start difference. First operand 781 states and 1221 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-14 04:48:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:54,900 INFO L93 Difference]: Finished difference Result 1915 states and 3024 transitions. [2024-11-14 04:48:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:54,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2024-11-14 04:48:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:54,913 INFO L225 Difference]: With dead ends: 1915 [2024-11-14 04:48:54,913 INFO L226 Difference]: Without dead ends: 1146 [2024-11-14 04:48:54,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:54,919 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 630 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:54,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1165 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:48:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2024-11-14 04:48:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1122. [2024-11-14 04:48:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 755 states have (on average 1.5536423841059603) internal successors, (1173), 807 states have internal predecessors, (1173), 292 states have call successors, (292), 74 states have call predecessors, (292), 74 states have return successors, (299), 282 states have call predecessors, (299), 289 states have call successors, (299) [2024-11-14 04:48:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1764 transitions. [2024-11-14 04:48:55,064 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1764 transitions. Word has length 49 [2024-11-14 04:48:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:55,065 INFO L471 AbstractCegarLoop]: Abstraction has 1122 states and 1764 transitions. [2024-11-14 04:48:55,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-14 04:48:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1764 transitions. [2024-11-14 04:48:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 04:48:55,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:55,072 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:55,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:48:55,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:55,278 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:55,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1798496669, now seen corresponding path program 1 times [2024-11-14 04:48:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685164338] [2024-11-14 04:48:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:48:55,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:55,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685164338] [2024-11-14 04:48:55,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685164338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:55,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:48:55,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:48:55,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340807855] [2024-11-14 04:48:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:55,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:55,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:48:55,662 INFO L87 Difference]: Start difference. First operand 1122 states and 1764 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 04:48:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:56,257 INFO L93 Difference]: Finished difference Result 3336 states and 5296 transitions. [2024-11-14 04:48:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:56,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2024-11-14 04:48:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:56,282 INFO L225 Difference]: With dead ends: 3336 [2024-11-14 04:48:56,283 INFO L226 Difference]: Without dead ends: 2226 [2024-11-14 04:48:56,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:48:56,292 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 633 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:56,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1291 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:48:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2024-11-14 04:48:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2108. [2024-11-14 04:48:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1461 states have (on average 1.57015742642026) internal successors, (2294), 1542 states have internal predecessors, (2294), 515 states have call successors, (515), 130 states have call predecessors, (515), 131 states have return successors, (550), 480 states have call predecessors, (550), 511 states have call successors, (550) [2024-11-14 04:48:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3359 transitions. [2024-11-14 04:48:56,570 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3359 transitions. Word has length 50 [2024-11-14 04:48:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:56,572 INFO L471 AbstractCegarLoop]: Abstraction has 2108 states and 3359 transitions. [2024-11-14 04:48:56,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 04:48:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3359 transitions. [2024-11-14 04:48:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 04:48:56,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:56,591 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:56,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:48:56,592 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:56,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 249457083, now seen corresponding path program 1 times [2024-11-14 04:48:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:56,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520631582] [2024-11-14 04:48:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:48:57,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520631582] [2024-11-14 04:48:57,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520631582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:57,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:48:57,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:48:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834763761] [2024-11-14 04:48:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:57,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:48:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:48:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:48:57,245 INFO L87 Difference]: Start difference. First operand 2108 states and 3359 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 04:48:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:58,642 INFO L93 Difference]: Finished difference Result 5232 states and 8489 transitions. [2024-11-14 04:48:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:48:58,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 94 [2024-11-14 04:48:58,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:58,681 INFO L225 Difference]: With dead ends: 5232 [2024-11-14 04:48:58,682 INFO L226 Difference]: Without dead ends: 3136 [2024-11-14 04:48:58,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:48:58,700 INFO L432 NwaCegarLoop]: 696 mSDtfsCounter, 619 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:58,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 3164 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 04:48:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2024-11-14 04:48:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 3090. [2024-11-14 04:48:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 2148 states have (on average 1.564711359404097) internal successors, (3361), 2277 states have internal predecessors, (3361), 747 states have call successors, (747), 192 states have call predecessors, (747), 194 states have return successors, (861), 689 states have call predecessors, (861), 742 states have call successors, (861) [2024-11-14 04:48:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 4969 transitions. [2024-11-14 04:48:59,005 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 4969 transitions. Word has length 94 [2024-11-14 04:48:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:59,006 INFO L471 AbstractCegarLoop]: Abstraction has 3090 states and 4969 transitions. [2024-11-14 04:48:59,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 04:48:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 4969 transitions. [2024-11-14 04:48:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 04:48:59,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:59,017 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:59,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:48:59,018 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:59,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash 786104344, now seen corresponding path program 1 times [2024-11-14 04:48:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:59,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701875446] [2024-11-14 04:48:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:59,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 04:48:59,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:59,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701875446] [2024-11-14 04:48:59,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701875446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:59,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979820948] [2024-11-14 04:48:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:59,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:59,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:59,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:49:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:00,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:49:00,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:49:00,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:00,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979820948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:00,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:00,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-14 04:49:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246127450] [2024-11-14 04:49:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:00,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:49:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:49:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:49:00,287 INFO L87 Difference]: Start difference. First operand 3090 states and 4969 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-14 04:49:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:02,078 INFO L93 Difference]: Finished difference Result 8380 states and 13794 transitions. [2024-11-14 04:49:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:49:02,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 94 [2024-11-14 04:49:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:02,129 INFO L225 Difference]: With dead ends: 8380 [2024-11-14 04:49:02,129 INFO L226 Difference]: Without dead ends: 5302 [2024-11-14 04:49:02,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:49:02,157 INFO L432 NwaCegarLoop]: 645 mSDtfsCounter, 556 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:02,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 2740 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 04:49:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2024-11-14 04:49:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 5259. [2024-11-14 04:49:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 3644 states have (on average 1.5030186608122942) internal successors, (5477), 3862 states have internal predecessors, (5477), 1267 states have call successors, (1267), 351 states have call predecessors, (1267), 347 states have return successors, (1581), 1154 states have call predecessors, (1581), 1259 states have call successors, (1581) [2024-11-14 04:49:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 8325 transitions. [2024-11-14 04:49:02,568 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 8325 transitions. Word has length 94 [2024-11-14 04:49:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:02,569 INFO L471 AbstractCegarLoop]: Abstraction has 5259 states and 8325 transitions. [2024-11-14 04:49:02,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-14 04:49:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 8325 transitions. [2024-11-14 04:49:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 04:49:02,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:02,578 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:02,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:49:02,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:02,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:02,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1992241786, now seen corresponding path program 1 times [2024-11-14 04:49:02,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:02,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518825617] [2024-11-14 04:49:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 04:49:03,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518825617] [2024-11-14 04:49:03,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518825617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:03,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959008816] [2024-11-14 04:49:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:03,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:03,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:03,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:03,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:49:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:03,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:49:03,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 04:49:03,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959008816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:03,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:03,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:49:03,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677786096] [2024-11-14 04:49:03,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:04,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:49:04,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:04,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:49:04,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:49:04,003 INFO L87 Difference]: Start difference. First operand 5259 states and 8325 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 04:49:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:04,651 INFO L93 Difference]: Finished difference Result 11698 states and 18620 transitions. [2024-11-14 04:49:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:49:04,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2024-11-14 04:49:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:04,735 INFO L225 Difference]: With dead ends: 11698 [2024-11-14 04:49:04,735 INFO L226 Difference]: Without dead ends: 6451 [2024-11-14 04:49:04,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:49:04,834 INFO L432 NwaCegarLoop]: 746 mSDtfsCounter, 591 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:04,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1281 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:49:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2024-11-14 04:49:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5173. [2024-11-14 04:49:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 3584 states have (on average 1.5027901785714286) internal successors, (5386), 3803 states have internal predecessors, (5386), 1250 states have call successors, (1250), 345 states have call predecessors, (1250), 338 states have return successors, (1520), 1133 states have call predecessors, (1520), 1242 states have call successors, (1520) [2024-11-14 04:49:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 8156 transitions. [2024-11-14 04:49:05,290 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 8156 transitions. Word has length 94 [2024-11-14 04:49:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:05,291 INFO L471 AbstractCegarLoop]: Abstraction has 5173 states and 8156 transitions. [2024-11-14 04:49:05,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 04:49:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 8156 transitions. [2024-11-14 04:49:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 04:49:05,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:05,297 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:05,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:49:05,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:05,497 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:05,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1896674551, now seen corresponding path program 1 times [2024-11-14 04:49:05,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:05,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057893395] [2024-11-14 04:49:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:05,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:49:06,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057893395] [2024-11-14 04:49:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057893395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990370357] [2024-11-14 04:49:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:06,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:06,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:06,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:06,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:49:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:06,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:49:06,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 04:49:07,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990370357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:07,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:07,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2024-11-14 04:49:07,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101165158] [2024-11-14 04:49:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:07,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:49:07,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:49:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:49:07,137 INFO L87 Difference]: Start difference. First operand 5173 states and 8156 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 04:49:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:07,811 INFO L93 Difference]: Finished difference Result 11234 states and 17736 transitions. [2024-11-14 04:49:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:49:07,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 99 [2024-11-14 04:49:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:07,875 INFO L225 Difference]: With dead ends: 11234 [2024-11-14 04:49:07,875 INFO L226 Difference]: Without dead ends: 6073 [2024-11-14 04:49:07,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:49:07,907 INFO L432 NwaCegarLoop]: 702 mSDtfsCounter, 416 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:07,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1801 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:49:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6073 states. [2024-11-14 04:49:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6073 to 6033. [2024-11-14 04:49:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6033 states, 4141 states have (on average 1.471625211301618) internal successors, (6094), 4364 states have internal predecessors, (6094), 1445 states have call successors, (1445), 450 states have call predecessors, (1445), 446 states have return successors, (1848), 1324 states have call predecessors, (1848), 1434 states have call successors, (1848) [2024-11-14 04:49:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 9387 transitions. [2024-11-14 04:49:08,459 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 9387 transitions. Word has length 99 [2024-11-14 04:49:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:08,459 INFO L471 AbstractCegarLoop]: Abstraction has 6033 states and 9387 transitions. [2024-11-14 04:49:08,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 04:49:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 9387 transitions. [2024-11-14 04:49:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-14 04:49:08,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:08,465 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:08,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:49:08,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:08,670 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:08,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash -296075551, now seen corresponding path program 1 times [2024-11-14 04:49:08,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:08,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785431314] [2024-11-14 04:49:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:08,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:49:09,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785431314] [2024-11-14 04:49:09,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785431314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067146117] [2024-11-14 04:49:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:09,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:09,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:09,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:09,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:49:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:10,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:49:10,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 04:49:10,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:49:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:49:11,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067146117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:49:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1389060288] [2024-11-14 04:49:11,513 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2024-11-14 04:49:11,513 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:49:11,518 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:49:11,524 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:49:11,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:49:28,925 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2024-11-14 04:49:45,765 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 450 for LOIs [2024-11-14 04:49:46,774 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 603 for LOIs [2024-11-14 04:49:54,069 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 577 for LOIs [2024-11-14 04:49:54,637 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 441 for LOIs [2024-11-14 04:49:54,875 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 441 for LOIs [2024-11-14 04:49:55,147 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 577 for LOIs [2024-11-14 04:50:05,318 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 581 for LOIs [2024-11-14 04:50:05,977 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 509 for LOIs [2024-11-14 04:50:06,302 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:50:11,719 WARN L286 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:50:23,503 WARN L286 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:50:31,600 WARN L286 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:50:38,906 WARN L286 SmtUtils]: Spent 7.06s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:51:00,014 WARN L286 SmtUtils]: Spent 7.09s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:51:06,869 WARN L286 SmtUtils]: Spent 6.56s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:51:14,838 WARN L286 SmtUtils]: Spent 7.69s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:51:22,939 WARN L286 SmtUtils]: Spent 7.78s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:51:38,527 WARN L286 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:51:48,866 WARN L286 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:51:55,249 WARN L286 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:05,212 WARN L286 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:12,017 WARN L286 SmtUtils]: Spent 6.46s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:25,326 WARN L286 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 480 DAG size of output: 449 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:30,915 WARN L286 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:36,511 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:42,265 WARN L286 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:47,905 WARN L286 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:52:47,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1389060288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:52:47,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:52:47,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [10, 8, 10] total 51 [2024-11-14 04:52:47,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515840905] [2024-11-14 04:52:47,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:52:47,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 04:52:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:52:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 04:52:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=2178, Unknown=0, NotChecked=0, Total=2550 [2024-11-14 04:52:47,913 INFO L87 Difference]: Start difference. First operand 6033 states and 9387 transitions. Second operand has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-14 04:52:56,453 WARN L286 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:53:04,212 WARN L286 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:53:11,994 WARN L286 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:53:18,803 WARN L286 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:53:26,403 WARN L286 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 584 DAG size of output: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:53:33,417 WARN L286 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 586 DAG size of output: 584 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:54:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:25,100 INFO L93 Difference]: Finished difference Result 12205 states and 18993 transitions. [2024-11-14 04:54:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 04:54:25,101 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) Word has length 100 [2024-11-14 04:54:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:25,172 INFO L225 Difference]: With dead ends: 12205 [2024-11-14 04:54:25,172 INFO L226 Difference]: Without dead ends: 6184 [2024-11-14 04:54:25,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 204.6s TimeCoverageRelationStatistics Valid=456, Invalid=2736, Unknown=0, NotChecked=0, Total=3192 [2024-11-14 04:54:25,202 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 149 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 8833 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4831 SdHoareTripleChecker+Invalid, 8870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 8833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:25,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 4831 Invalid, 8870 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [37 Valid, 8833 Invalid, 0 Unknown, 0 Unchecked, 53.7s Time] [2024-11-14 04:54:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6184 states. [2024-11-14 04:54:25,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6184 to 6105. [2024-11-14 04:54:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 4191 states have (on average 1.467668814125507) internal successors, (6151), 4413 states have internal predecessors, (6151), 1460 states have call successors, (1460), 459 states have call predecessors, (1460), 453 states have return successors, (1864), 1338 states have call predecessors, (1864), 1449 states have call successors, (1864) [2024-11-14 04:54:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 9475 transitions. [2024-11-14 04:54:26,055 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 9475 transitions. Word has length 100 [2024-11-14 04:54:26,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:26,055 INFO L471 AbstractCegarLoop]: Abstraction has 6105 states and 9475 transitions. [2024-11-14 04:54:26,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-14 04:54:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 9475 transitions. [2024-11-14 04:54:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-14 04:54:26,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:26,060 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:26,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 04:54:26,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:54:26,262 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:54:26,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash -471869827, now seen corresponding path program 1 times [2024-11-14 04:54:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422201324] [2024-11-14 04:54:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:54:26,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422201324] [2024-11-14 04:54:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422201324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:54:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179143864] [2024-11-14 04:54:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:26,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:54:26,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:54:26,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:54:26,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:54:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:27,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:54:27,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:54:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 04:54:28,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:54:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:54:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179143864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:54:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [777376039] [2024-11-14 04:54:28,745 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2024-11-14 04:54:28,746 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:54:28,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:54:28,747 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:54:28,748 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:54:46,089 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2024-11-14 04:55:11,074 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 60 for LOIs [2024-11-14 04:55:11,104 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 603 for LOIs [2024-11-14 04:55:19,355 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 577 for LOIs [2024-11-14 04:55:20,155 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 441 for LOIs [2024-11-14 04:55:20,403 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 441 for LOIs [2024-11-14 04:55:20,697 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 577 for LOIs [2024-11-14 04:55:31,849 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 581 for LOIs [2024-11-14 04:55:32,719 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 509 for LOIs [2024-11-14 04:55:33,132 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:55:38,784 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:55:44,504 WARN L286 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:55:52,819 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:01,025 WARN L286 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:07,369 WARN L286 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:13,141 WARN L286 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:18,986 WARN L286 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:24,888 WARN L286 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:32,638 WARN L286 SmtUtils]: Spent 7.50s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:40,301 WARN L286 SmtUtils]: Spent 7.39s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:47,722 WARN L286 SmtUtils]: Spent 7.16s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:56:55,180 WARN L286 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:01,204 WARN L286 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 513 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:11,939 WARN L286 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:22,658 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:28,498 WARN L286 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:38,282 WARN L286 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:44,777 WARN L286 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:52,132 WARN L286 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:57:58,902 WARN L286 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:05,731 WARN L286 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:12,358 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:18,419 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:24,078 WARN L286 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:24,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [777376039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:58:24,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:58:24,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [10, 8, 10] total 50 [2024-11-14 04:58:24,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019929487] [2024-11-14 04:58:24,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:58:24,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 04:58:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:58:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 04:58:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2075, Unknown=0, NotChecked=0, Total=2450 [2024-11-14 04:58:24,087 INFO L87 Difference]: Start difference. First operand 6105 states and 9475 transitions. Second operand has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) [2024-11-14 04:58:31,878 WARN L286 SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:38,991 WARN L286 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:46,429 WARN L286 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:58:53,132 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:59:00,063 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:59:06,567 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:59:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:59:52,942 INFO L93 Difference]: Finished difference Result 12183 states and 18954 transitions. [2024-11-14 04:59:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 04:59:52,942 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) Word has length 106 [2024-11-14 04:59:52,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:59:52,994 INFO L225 Difference]: With dead ends: 12183 [2024-11-14 04:59:52,994 INFO L226 Difference]: Without dead ends: 6174 [2024-11-14 04:59:53,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 210.8s TimeCoverageRelationStatistics Valid=456, Invalid=2624, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 04:59:53,027 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 274 mSDsluCounter, 4792 mSDsCounter, 0 mSdLazyCounter, 9596 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 5399 SdHoareTripleChecker+Invalid, 9669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 9596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:59:53,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 5399 Invalid, 9669 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [73 Valid, 9596 Invalid, 0 Unknown, 0 Unchecked, 48.5s Time] [2024-11-14 04:59:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2024-11-14 04:59:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 6107. [2024-11-14 04:59:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6107 states, 4192 states have (on average 1.4673187022900764) internal successors, (6151), 4414 states have internal predecessors, (6151), 1460 states have call successors, (1460), 460 states have call predecessors, (1460), 454 states have return successors, (1864), 1338 states have call predecessors, (1864), 1449 states have call successors, (1864) [2024-11-14 04:59:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6107 states to 6107 states and 9475 transitions. [2024-11-14 04:59:53,861 INFO L78 Accepts]: Start accepts. Automaton has 6107 states and 9475 transitions. Word has length 106 [2024-11-14 04:59:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:59:53,861 INFO L471 AbstractCegarLoop]: Abstraction has 6107 states and 9475 transitions. [2024-11-14 04:59:53,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) [2024-11-14 04:59:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand 6107 states and 9475 transitions. [2024-11-14 04:59:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-14 04:59:53,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:59:53,867 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:59:53,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 04:59:54,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:59:54,071 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:59:54,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:59:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1605697551, now seen corresponding path program 1 times [2024-11-14 04:59:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:59:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941092077] [2024-11-14 04:59:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:59:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:59:54,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:59:54,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941092077] [2024-11-14 04:59:54,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941092077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:59:54,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698736789] [2024-11-14 04:59:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:59:54,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:59:54,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:59:54,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:59:54,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ff3a3-aa77-4682-99d4-244492c6321d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:59:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:55,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:59:55,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:59:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 04:59:55,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:59:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:59:55,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698736789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:59:55,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147477614] [2024-11-14 04:59:55,853 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2024-11-14 04:59:55,854 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:59:55,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:59:55,854 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:59:55,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:00:11,188 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2024-11-14 05:00:36,342 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 450 for LOIs [2024-11-14 05:00:36,875 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 603 for LOIs [2024-11-14 05:00:44,117 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 577 for LOIs [2024-11-14 05:00:44,663 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 441 for LOIs [2024-11-14 05:00:44,932 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 441 for LOIs [2024-11-14 05:00:45,201 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 577 for LOIs [2024-11-14 05:00:54,997 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 581 for LOIs [2024-11-14 05:00:55,734 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 509 for LOIs [2024-11-14 05:00:56,102 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:01:01,639 WARN L286 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:07,181 WARN L286 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:15,018 WARN L286 SmtUtils]: Spent 7.63s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:22,918 WARN L286 SmtUtils]: Spent 7.71s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:29,613 WARN L286 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:44,411 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:50,510 WARN L286 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:01:56,482 WARN L286 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:02:03,946 WARN L286 SmtUtils]: Spent 7.23s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:02:11,381 WARN L286 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:02:17,162 WARN L286 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 513 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:02:27,916 WARN L286 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:02:37,845 WARN L286 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 05:02:43,953 WARN L286 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)