./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje --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 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:35:03,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:35:03,567 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:35:03,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:35:03,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:35:03,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:35:03,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:35:03,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:35:03,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:35:03,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:35:03,623 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:35:03,625 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:35:03,625 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:35:03,626 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:35:03,626 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:35:03,626 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:35:03,627 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:35:03,627 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:35:03,627 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:35:03,628 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:35:03,628 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:35:03,632 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:35:03,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:35:03,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:35:03,647 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:35:03,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:35:03,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:35:03,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:35:03,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:35:03,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:35:03,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:35:03,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:35:03,649 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:35:03,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:35:03,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:35:03,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:35:03,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:35:03,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:35:03,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:35:03,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:35:03,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:35:03,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:35:03,654 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:35:03,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:35:03,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:35:03,655 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:35:03,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:35:03,655 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 752f24c6361e3daac9b48908e677c53c177497426b343006dfb6bc7474fe1fb2 [2024-11-09 05:35:03,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:35:03,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:35:03,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:35:03,972 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:35:03,973 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:35:03,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c Unable to find full path for "g++" [2024-11-09 05:35:06,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:35:06,339 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:35:06,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2024-11-09 05:35:06,368 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/data/c4ed14841/7919c25637674df3a98c745f88f51a36/FLAGb5af44e78 [2024-11-09 05:35:06,384 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/data/c4ed14841/7919c25637674df3a98c745f88f51a36 [2024-11-09 05:35:06,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:35:06,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:35:06,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:35:06,390 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:35:06,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:35:06,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:35:06" (1/1) ... [2024-11-09 05:35:06,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea2640e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:06, skipping insertion in model container [2024-11-09 05:35:06,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:35:06" (1/1) ... [2024-11-09 05:35:06,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:35:06,716 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_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2024-11-09 05:35:07,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:35:07,142 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:35:07,153 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-09 05:35:07,154 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [57] [2024-11-09 05:35:07,155 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [95] [2024-11-09 05:35:07,155 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [287] [2024-11-09 05:35:07,155 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [653] [2024-11-09 05:35:07,155 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [752] [2024-11-09 05:35:07,155 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [770] [2024-11-09 05:35:07,155 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1437] [2024-11-09 05:35:07,156 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1557] [2024-11-09 05:35:07,156 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3170] [2024-11-09 05:35:07,158 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_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c[1545,1558] [2024-11-09 05:35:07,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:35:07,331 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:35:07,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07 WrapperNode [2024-11-09 05:35:07,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:35:07,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:35:07,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:35:07,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:35:07,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,418 INFO L138 Inliner]: procedures = 95, calls = 355, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 987 [2024-11-09 05:35:07,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:35:07,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:35:07,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:35:07,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:35:07,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:35:07,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:35:07,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:35:07,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:35:07,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (1/1) ... [2024-11-09 05:35:07,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:35:07,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:07,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:35:07,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:35:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:35:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-09 05:35:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-09 05:35:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-09 05:35:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-09 05:35:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-09 05:35:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-09 05:35:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 05:35:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 05:35:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-09 05:35:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-09 05:35:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 05:35:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 05:35:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-09 05:35:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-09 05:35:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 05:35:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 05:35:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-09 05:35:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-09 05:35:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:35:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:35:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:35:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:35:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-09 05:35:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-09 05:35:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 05:35:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 05:35:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 05:35:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 05:35:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 05:35:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 05:35:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 05:35:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 05:35:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-09 05:35:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-09 05:35:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 05:35:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 05:35:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-09 05:35:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-09 05:35:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 05:35:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 05:35:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 05:35:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 05:35:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 05:35:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 05:35:07,633 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 05:35:07,633 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 05:35:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:35:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-09 05:35:07,634 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-09 05:35:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 05:35:07,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 05:35:07,634 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 05:35:07,634 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 05:35:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 05:35:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 05:35:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:35:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:35:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 05:35:07,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 05:35:07,853 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:35:07,857 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:35:09,358 INFO L? ?]: Removed 493 outVars from TransFormulas that were not future-live. [2024-11-09 05:35:09,358 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:35:10,453 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:35:10,453 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:35:10,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:35:10 BoogieIcfgContainer [2024-11-09 05:35:10,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:35:10,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:35:10,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:35:10,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:35:10,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:35:06" (1/3) ... [2024-11-09 05:35:10,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d8560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:35:10, skipping insertion in model container [2024-11-09 05:35:10,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:35:07" (2/3) ... [2024-11-09 05:35:10,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d8560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:35:10, skipping insertion in model container [2024-11-09 05:35:10,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:35:10" (3/3) ... [2024-11-09 05:35:10,463 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2024-11-09 05:35:10,483 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:35:10,483 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:35:10,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:35:10,591 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;@688fc89f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:35:10,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:35:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 427 states, 284 states have (on average 1.556338028169014) internal successors, (442), 302 states have internal predecessors, (442), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-09 05:35:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 05:35:10,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:10,634 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] [2024-11-09 05:35:10,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:10,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash -405944074, now seen corresponding path program 1 times [2024-11-09 05:35:10,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:10,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931588438] [2024-11-09 05:35:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:35:11,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:11,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931588438] [2024-11-09 05:35:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931588438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560239519] [2024-11-09 05:35:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:11,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:11,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:11,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:11,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:35:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:12,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:35:12,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:35:12,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:12,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560239519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:12,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:12,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:35:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648617316] [2024-11-09 05:35:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:12,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:35:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:35:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:35:12,545 INFO L87 Difference]: Start difference. First operand has 427 states, 284 states have (on average 1.556338028169014) internal successors, (442), 302 states have internal predecessors, (442), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 05:35:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:12,961 INFO L93 Difference]: Finished difference Result 1204 states and 1908 transitions. [2024-11-09 05:35:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:35:12,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 87 [2024-11-09 05:35:12,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:12,981 INFO L225 Difference]: With dead ends: 1204 [2024-11-09 05:35:12,981 INFO L226 Difference]: Without dead ends: 779 [2024-11-09 05:35:12,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:35:12,993 INFO L432 NwaCegarLoop]: 1066 mSDtfsCounter, 596 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:12,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1600 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:35:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-09 05:35:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 767. [2024-11-09 05:35:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 515 states have (on average 1.5475728155339805) internal successors, (797), 546 states have internal predecessors, (797), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2024-11-09 05:35:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1201 transitions. [2024-11-09 05:35:13,150 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1201 transitions. Word has length 87 [2024-11-09 05:35:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:13,155 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1201 transitions. [2024-11-09 05:35:13,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 05:35:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1201 transitions. [2024-11-09 05:35:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:35:13,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:13,170 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] [2024-11-09 05:35:13,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:35:13,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 05:35:13,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:13,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1954661185, now seen corresponding path program 1 times [2024-11-09 05:35:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:13,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043805692] [2024-11-09 05:35:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:35:14,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:14,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043805692] [2024-11-09 05:35:14,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043805692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:35:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:35:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141406547] [2024-11-09 05:35:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:14,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:35:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:35:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:35:14,015 INFO L87 Difference]: Start difference. First operand 767 states and 1201 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:35:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:15,051 INFO L93 Difference]: Finished difference Result 2230 states and 3552 transitions. [2024-11-09 05:35:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:35:15,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 88 [2024-11-09 05:35:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:15,069 INFO L225 Difference]: With dead ends: 2230 [2024-11-09 05:35:15,070 INFO L226 Difference]: Without dead ends: 1475 [2024-11-09 05:35:15,075 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 [2024-11-09 05:35:15,078 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 609 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:15,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 3024 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:35:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2024-11-09 05:35:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1431. [2024-11-09 05:35:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 980 states have (on average 1.5561224489795917) internal successors, (1525), 1039 states have internal predecessors, (1525), 359 states have call successors, (359), 92 states have call predecessors, (359), 91 states have return successors, (392), 339 states have call predecessors, (392), 355 states have call successors, (392) [2024-11-09 05:35:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2276 transitions. [2024-11-09 05:35:15,201 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2276 transitions. Word has length 88 [2024-11-09 05:35:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:15,202 INFO L471 AbstractCegarLoop]: Abstraction has 1431 states and 2276 transitions. [2024-11-09 05:35:15,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:35:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2276 transitions. [2024-11-09 05:35:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:35:15,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:15,210 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] [2024-11-09 05:35:15,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:35:15,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:15,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 287158852, now seen corresponding path program 1 times [2024-11-09 05:35:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549253423] [2024-11-09 05:35:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:35:15,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549253423] [2024-11-09 05:35:15,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549253423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125552553] [2024-11-09 05:35:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:15,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:15,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:15,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:35:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:16,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:35:16,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:35:16,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:16,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125552553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:16,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:16,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:35:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102575528] [2024-11-09 05:35:16,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:16,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:35:16,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:35:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:35:16,276 INFO L87 Difference]: Start difference. First operand 1431 states and 2276 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 05:35:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:16,633 INFO L93 Difference]: Finished difference Result 3526 states and 5679 transitions. [2024-11-09 05:35:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:35:16,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 88 [2024-11-09 05:35:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:16,652 INFO L225 Difference]: With dead ends: 3526 [2024-11-09 05:35:16,653 INFO L226 Difference]: Without dead ends: 2107 [2024-11-09 05:35:16,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:35:16,665 INFO L432 NwaCegarLoop]: 1103 mSDtfsCounter, 589 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:16,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1630 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:35:16,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2024-11-09 05:35:16,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 2062. [2024-11-09 05:35:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1418 states have (on average 1.5585331452750353) internal successors, (2210), 1506 states have internal predecessors, (2210), 512 states have call successors, (512), 130 states have call predecessors, (512), 131 states have return successors, (568), 485 states have call predecessors, (568), 508 states have call successors, (568) [2024-11-09 05:35:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3290 transitions. [2024-11-09 05:35:16,893 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3290 transitions. Word has length 88 [2024-11-09 05:35:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:16,894 INFO L471 AbstractCegarLoop]: Abstraction has 2062 states and 3290 transitions. [2024-11-09 05:35:16,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 05:35:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3290 transitions. [2024-11-09 05:35:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 05:35:16,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:16,912 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] [2024-11-09 05:35:16,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:35:17,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:17,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:17,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash 939029101, now seen corresponding path program 1 times [2024-11-09 05:35:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:17,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27369727] [2024-11-09 05:35:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:35:17,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:17,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27369727] [2024-11-09 05:35:17,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27369727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:17,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467208679] [2024-11-09 05:35:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:17,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:17,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:17,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:35:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:17,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:35:17,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:35:18,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467208679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:18,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:18,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-09 05:35:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385269495] [2024-11-09 05:35:18,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:18,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:35:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:18,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:35:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:35:18,094 INFO L87 Difference]: Start difference. First operand 2062 states and 3290 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 05:35:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:19,297 INFO L93 Difference]: Finished difference Result 5529 states and 9003 transitions. [2024-11-09 05:35:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:35:19,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2024-11-09 05:35:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:19,330 INFO L225 Difference]: With dead ends: 5529 [2024-11-09 05:35:19,331 INFO L226 Difference]: Without dead ends: 3479 [2024-11-09 05:35:19,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:35:19,358 INFO L432 NwaCegarLoop]: 631 mSDtfsCounter, 539 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:19,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 2678 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 05:35:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2024-11-09 05:35:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3446. [2024-11-09 05:35:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2363 states have (on average 1.4993652137113838) internal successors, (3543), 2512 states have internal predecessors, (3543), 855 states have call successors, (855), 232 states have call predecessors, (855), 227 states have return successors, (1003), 797 states have call predecessors, (1003), 849 states have call successors, (1003) [2024-11-09 05:35:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 5401 transitions. [2024-11-09 05:35:19,627 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 5401 transitions. Word has length 89 [2024-11-09 05:35:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:19,629 INFO L471 AbstractCegarLoop]: Abstraction has 3446 states and 5401 transitions. [2024-11-09 05:35:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 05:35:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 5401 transitions. [2024-11-09 05:35:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 05:35:19,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:19,635 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] [2024-11-09 05:35:19,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:35:19,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:19,836 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:19,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash -523294134, now seen corresponding path program 1 times [2024-11-09 05:35:19,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:19,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208462034] [2024-11-09 05:35:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:19,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:35:20,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208462034] [2024-11-09 05:35:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208462034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079638795] [2024-11-09 05:35:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:20,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:20,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:20,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:20,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:35:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:21,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:35:21,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:35:21,495 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:21,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079638795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:21,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:21,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2024-11-09 05:35:21,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694079360] [2024-11-09 05:35:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:21,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:35:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:35:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:35:21,503 INFO L87 Difference]: Start difference. First operand 3446 states and 5401 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-09 05:35:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:23,373 INFO L93 Difference]: Finished difference Result 7275 states and 11411 transitions. [2024-11-09 05:35:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:35:23,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 94 [2024-11-09 05:35:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:23,408 INFO L225 Difference]: With dead ends: 7275 [2024-11-09 05:35:23,408 INFO L226 Difference]: Without dead ends: 3841 [2024-11-09 05:35:23,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:35:23,437 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 1125 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:23,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 2025 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 05:35:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2024-11-09 05:35:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3830. [2024-11-09 05:35:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 2647 states have (on average 1.4797884397431054) internal successors, (3917), 2804 states have internal predecessors, (3917), 927 states have call successors, (927), 264 states have call predecessors, (927), 255 states have return successors, (1083), 857 states have call predecessors, (1083), 921 states have call successors, (1083) [2024-11-09 05:35:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 5927 transitions. [2024-11-09 05:35:23,765 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 5927 transitions. Word has length 94 [2024-11-09 05:35:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:23,765 INFO L471 AbstractCegarLoop]: Abstraction has 3830 states and 5927 transitions. [2024-11-09 05:35:23,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-09 05:35:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 5927 transitions. [2024-11-09 05:35:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 05:35:23,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:23,769 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, 1] [2024-11-09 05:35:23,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:23,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:23,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:23,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash -489519046, now seen corresponding path program 1 times [2024-11-09 05:35:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:23,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258604559] [2024-11-09 05:35:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:23,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:35:24,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:24,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258604559] [2024-11-09 05:35:24,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258604559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947042181] [2024-11-09 05:35:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:24,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:24,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:24,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:24,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:35:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:25,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:35:25,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:35:25,345 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947042181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:25,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:25,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-09 05:35:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33551612] [2024-11-09 05:35:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:25,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:35:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:35:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:35:25,347 INFO L87 Difference]: Start difference. First operand 3830 states and 5927 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-09 05:35:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:25,864 INFO L93 Difference]: Finished difference Result 6855 states and 10635 transitions. [2024-11-09 05:35:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:35:25,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2024-11-09 05:35:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:25,903 INFO L225 Difference]: With dead ends: 6855 [2024-11-09 05:35:25,904 INFO L226 Difference]: Without dead ends: 3890 [2024-11-09 05:35:25,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:35:25,928 INFO L432 NwaCegarLoop]: 615 mSDtfsCounter, 0 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3682 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:25,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3682 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:35:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2024-11-09 05:35:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3890. [2024-11-09 05:35:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 2697 states have (on average 1.4708935854653318) internal successors, (3967), 2854 states have internal predecessors, (3967), 927 states have call successors, (927), 264 states have call predecessors, (927), 265 states have return successors, (1103), 867 states have call predecessors, (1103), 921 states have call successors, (1103) [2024-11-09 05:35:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 5997 transitions. [2024-11-09 05:35:26,255 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 5997 transitions. Word has length 101 [2024-11-09 05:35:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:26,256 INFO L471 AbstractCegarLoop]: Abstraction has 3890 states and 5997 transitions. [2024-11-09 05:35:26,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-09 05:35:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 5997 transitions. [2024-11-09 05:35:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 05:35:26,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:26,260 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] [2024-11-09 05:35:26,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:35:26,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:26,461 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:26,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:26,462 INFO L85 PathProgramCache]: Analyzing trace with hash 340330118, now seen corresponding path program 1 times [2024-11-09 05:35:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:26,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844738050] [2024-11-09 05:35:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:26,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:35:27,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:27,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844738050] [2024-11-09 05:35:27,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844738050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919466831] [2024-11-09 05:35:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:27,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:27,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:27,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:27,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:35:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:27,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:35:27,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:35:27,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 05:35:28,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919466831] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:28,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:35:28,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2024-11-09 05:35:28,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663161915] [2024-11-09 05:35:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:28,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:35:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:35:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:35:28,259 INFO L87 Difference]: Start difference. First operand 3890 states and 5997 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-09 05:35:32,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:32,816 INFO L93 Difference]: Finished difference Result 10318 states and 16797 transitions. [2024-11-09 05:35:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 05:35:32,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 103 [2024-11-09 05:35:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:32,893 INFO L225 Difference]: With dead ends: 10318 [2024-11-09 05:35:32,893 INFO L226 Difference]: Without dead ends: 7707 [2024-11-09 05:35:32,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 05:35:32,921 INFO L432 NwaCegarLoop]: 620 mSDtfsCounter, 2481 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:32,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2575 Valid, 2945 Invalid, 3358 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1095 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 05:35:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7707 states. [2024-11-09 05:35:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7707 to 7575. [2024-11-09 05:35:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 5346 states have (on average 1.4768050879161991) internal successors, (7895), 5598 states have internal predecessors, (7895), 1671 states have call successors, (1671), 524 states have call predecessors, (1671), 557 states have return successors, (2449), 1596 states have call predecessors, (2449), 1663 states have call successors, (2449) [2024-11-09 05:35:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 12015 transitions. [2024-11-09 05:35:33,889 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 12015 transitions. Word has length 103 [2024-11-09 05:35:33,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:33,891 INFO L471 AbstractCegarLoop]: Abstraction has 7575 states and 12015 transitions. [2024-11-09 05:35:33,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-09 05:35:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 12015 transitions. [2024-11-09 05:35:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 05:35:33,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:33,898 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, 1] [2024-11-09 05:35:33,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:34,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:34,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:34,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash -883457105, now seen corresponding path program 1 times [2024-11-09 05:35:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:34,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255908546] [2024-11-09 05:35:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:35:34,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255908546] [2024-11-09 05:35:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255908546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998568359] [2024-11-09 05:35:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:34,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:34,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:34,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:35:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:35,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:35:35,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:35:35,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998568359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:35,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:35,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-09 05:35:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810132933] [2024-11-09 05:35:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:35,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:35:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:35:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:35:35,461 INFO L87 Difference]: Start difference. First operand 7575 states and 12015 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 05:35:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:36,705 INFO L93 Difference]: Finished difference Result 13885 states and 22086 transitions. [2024-11-09 05:35:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:35:36,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 107 [2024-11-09 05:35:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:36,786 INFO L225 Difference]: With dead ends: 13885 [2024-11-09 05:35:36,786 INFO L226 Difference]: Without dead ends: 7597 [2024-11-09 05:35:36,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:35:36,824 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 448 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:36,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 2438 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:35:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7597 states. [2024-11-09 05:35:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7597 to 7575. [2024-11-09 05:35:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 5346 states have (on average 1.4768050879161991) internal successors, (7895), 5598 states have internal predecessors, (7895), 1671 states have call successors, (1671), 524 states have call predecessors, (1671), 557 states have return successors, (2441), 1596 states have call predecessors, (2441), 1663 states have call successors, (2441) [2024-11-09 05:35:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 12007 transitions. [2024-11-09 05:35:37,476 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 12007 transitions. Word has length 107 [2024-11-09 05:35:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:37,477 INFO L471 AbstractCegarLoop]: Abstraction has 7575 states and 12007 transitions. [2024-11-09 05:35:37,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 05:35:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 12007 transitions. [2024-11-09 05:35:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 05:35:37,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:37,482 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:35:37,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:35:37,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:37,683 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:37,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:37,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1476566528, now seen corresponding path program 1 times [2024-11-09 05:35:37,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:37,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105919492] [2024-11-09 05:35:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:37,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:35:38,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105919492] [2024-11-09 05:35:38,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105919492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251579108] [2024-11-09 05:35:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:38,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:38,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:38,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:35:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:38,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:35:38,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:35:39,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251579108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:39,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:39,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2024-11-09 05:35:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742741218] [2024-11-09 05:35:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:39,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:35:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:35:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:35:39,267 INFO L87 Difference]: Start difference. First operand 7575 states and 12007 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-09 05:35:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:41,167 INFO L93 Difference]: Finished difference Result 19056 states and 30247 transitions. [2024-11-09 05:35:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:35:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 134 [2024-11-09 05:35:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:41,353 INFO L225 Difference]: With dead ends: 19056 [2024-11-09 05:35:41,353 INFO L226 Difference]: Without dead ends: 11493 [2024-11-09 05:35:41,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:35:41,404 INFO L432 NwaCegarLoop]: 733 mSDtfsCounter, 576 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:41,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1717 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:35:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11493 states. [2024-11-09 05:35:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11493 to 11357. [2024-11-09 05:35:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11357 states, 8037 states have (on average 1.475799427647132) internal successors, (11861), 8370 states have internal predecessors, (11861), 2497 states have call successors, (2497), 783 states have call predecessors, (2497), 822 states have return successors, (3551), 2347 states have call predecessors, (3551), 2486 states have call successors, (3551) [2024-11-09 05:35:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11357 states to 11357 states and 17909 transitions. [2024-11-09 05:35:42,290 INFO L78 Accepts]: Start accepts. Automaton has 11357 states and 17909 transitions. Word has length 134 [2024-11-09 05:35:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:42,291 INFO L471 AbstractCegarLoop]: Abstraction has 11357 states and 17909 transitions. [2024-11-09 05:35:42,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-09 05:35:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 11357 states and 17909 transitions. [2024-11-09 05:35:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-09 05:35:42,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:42,299 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:35:42,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:35:42,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:42,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:42,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1103545682, now seen corresponding path program 1 times [2024-11-09 05:35:42,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:42,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403424759] [2024-11-09 05:35:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:42,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 05:35:43,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:43,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403424759] [2024-11-09 05:35:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403424759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036716326] [2024-11-09 05:35:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:43,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:43,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:43,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:43,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:35:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:43,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:35:43,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 05:35:44,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 05:35:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036716326] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:44,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:35:44,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 27 [2024-11-09 05:35:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104736453] [2024-11-09 05:35:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:44,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:35:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:35:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:35:44,757 INFO L87 Difference]: Start difference. First operand 11357 states and 17909 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-09 05:35:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:51,800 INFO L93 Difference]: Finished difference Result 24034 states and 39190 transitions. [2024-11-09 05:35:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 05:35:51,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 136 [2024-11-09 05:35:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:52,039 INFO L225 Difference]: With dead ends: 24034 [2024-11-09 05:35:52,040 INFO L226 Difference]: Without dead ends: 24031 [2024-11-09 05:35:52,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=2375, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 05:35:52,068 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 3355 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 1428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3464 SdHoareTripleChecker+Valid, 3488 SdHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1428 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:52,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3464 Valid, 3488 Invalid, 4825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1428 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 05:35:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2024-11-09 05:35:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 21605. [2024-11-09 05:35:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21605 states, 15544 states have (on average 1.4918296448790531) internal successors, (23189), 16077 states have internal predecessors, (23189), 4467 states have call successors, (4467), 1443 states have call predecessors, (4467), 1593 states have return successors, (6752), 4336 states have call predecessors, (6752), 4450 states have call successors, (6752) [2024-11-09 05:35:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21605 states to 21605 states and 34408 transitions. [2024-11-09 05:35:54,309 INFO L78 Accepts]: Start accepts. Automaton has 21605 states and 34408 transitions. Word has length 136 [2024-11-09 05:35:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:54,310 INFO L471 AbstractCegarLoop]: Abstraction has 21605 states and 34408 transitions. [2024-11-09 05:35:54,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-09 05:35:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21605 states and 34408 transitions. [2024-11-09 05:35:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 05:35:54,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:54,329 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 05:35:54,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 05:35:54,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:54,533 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:35:54,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1943291945, now seen corresponding path program 1 times [2024-11-09 05:35:54,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:54,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510041721] [2024-11-09 05:35:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 05:35:54,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510041721] [2024-11-09 05:35:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510041721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938710795] [2024-11-09 05:35:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:54,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:54,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:54,877 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:54,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:35:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:55,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:35:55,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:35:55,600 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:35:55,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938710795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:35:55,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:35:55,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-09 05:35:55,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200288574] [2024-11-09 05:35:55,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:35:55,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:35:55,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:55,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:35:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:35:55,604 INFO L87 Difference]: Start difference. First operand 21605 states and 34408 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 6 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-09 05:36:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:01,061 INFO L93 Difference]: Finished difference Result 46659 states and 75185 transitions. [2024-11-09 05:36:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:36:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 6 states have call predecessors, (28), 5 states have call successors, (28) Word has length 162 [2024-11-09 05:36:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:01,402 INFO L225 Difference]: With dead ends: 46659 [2024-11-09 05:36:01,402 INFO L226 Difference]: Without dead ends: 24700 [2024-11-09 05:36:01,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:36:01,505 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 1505 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 3175 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:01,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1585 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3175 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 05:36:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24700 states. [2024-11-09 05:36:03,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24700 to 21590. [2024-11-09 05:36:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21590 states, 15529 states have (on average 1.4921115332603516) internal successors, (23171), 16062 states have internal predecessors, (23171), 4467 states have call successors, (4467), 1443 states have call predecessors, (4467), 1593 states have return successors, (6752), 4336 states have call predecessors, (6752), 4450 states have call successors, (6752) [2024-11-09 05:36:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21590 states to 21590 states and 34390 transitions. [2024-11-09 05:36:03,922 INFO L78 Accepts]: Start accepts. Automaton has 21590 states and 34390 transitions. Word has length 162 [2024-11-09 05:36:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:03,923 INFO L471 AbstractCegarLoop]: Abstraction has 21590 states and 34390 transitions. [2024-11-09 05:36:03,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 6 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-09 05:36:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21590 states and 34390 transitions. [2024-11-09 05:36:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-09 05:36:03,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:03,943 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 05:36:03,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:36:04,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:36:04,148 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:04,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1739154941, now seen corresponding path program 1 times [2024-11-09 05:36:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:04,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990878750] [2024-11-09 05:36:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:04,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-09 05:36:05,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990878750] [2024-11-09 05:36:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990878750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999717866] [2024-11-09 05:36:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:05,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:05,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:05,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:36:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:05,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 1984 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:36:05,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 05:36:05,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:36:05,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999717866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:05,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:36:05,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2024-11-09 05:36:05,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366358326] [2024-11-09 05:36:05,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:05,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:36:05,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:36:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:36:05,963 INFO L87 Difference]: Start difference. First operand 21590 states and 34390 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-09 05:36:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:08,579 INFO L93 Difference]: Finished difference Result 50598 states and 81725 transitions. [2024-11-09 05:36:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:36:08,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 169 [2024-11-09 05:36:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:08,924 INFO L225 Difference]: With dead ends: 50598 [2024-11-09 05:36:08,924 INFO L226 Difference]: Without dead ends: 29020 [2024-11-09 05:36:09,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:36:09,053 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 514 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:09,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1360 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:36:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29020 states. [2024-11-09 05:36:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29020 to 28707. [2024-11-09 05:36:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28707 states, 20671 states have (on average 1.4921871220550529) internal successors, (30845), 21398 states have internal predecessors, (30845), 5918 states have call successors, (5918), 1902 states have call predecessors, (5918), 2117 states have return successors, (9011), 5748 states have call predecessors, (9011), 5901 states have call successors, (9011) [2024-11-09 05:36:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28707 states to 28707 states and 45774 transitions. [2024-11-09 05:36:11,856 INFO L78 Accepts]: Start accepts. Automaton has 28707 states and 45774 transitions. Word has length 169 [2024-11-09 05:36:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:11,857 INFO L471 AbstractCegarLoop]: Abstraction has 28707 states and 45774 transitions. [2024-11-09 05:36:11,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-09 05:36:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 28707 states and 45774 transitions. [2024-11-09 05:36:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 05:36:11,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:11,891 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 05:36:11,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:36:12,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 05:36:12,093 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:12,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1325419791, now seen corresponding path program 1 times [2024-11-09 05:36:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600667530] [2024-11-09 05:36:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 05:36:13,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:13,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600667530] [2024-11-09 05:36:13,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600667530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193753099] [2024-11-09 05:36:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:13,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:13,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:13,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:36:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:13,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:36:13,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 05:36:14,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:36:14,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193753099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:14,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:36:14,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2024-11-09 05:36:14,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675848653] [2024-11-09 05:36:14,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:14,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:36:14,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:36:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:36:14,026 INFO L87 Difference]: Start difference. First operand 28707 states and 45774 transitions. Second operand has 9 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-09 05:36:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:18,634 INFO L93 Difference]: Finished difference Result 73236 states and 117672 transitions. [2024-11-09 05:36:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:36:18,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) Word has length 174 [2024-11-09 05:36:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:19,080 INFO L225 Difference]: With dead ends: 73236 [2024-11-09 05:36:19,080 INFO L226 Difference]: Without dead ends: 47452 [2024-11-09 05:36:19,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:36:19,362 INFO L432 NwaCegarLoop]: 668 mSDtfsCounter, 587 mSDsluCounter, 3301 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:19,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 3969 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 05:36:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47452 states. [2024-11-09 05:36:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47452 to 47299. [2024-11-09 05:36:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47299 states, 34179 states have (on average 1.4980543608648584) internal successors, (51202), 35298 states have internal predecessors, (51202), 9652 states have call successors, (9652), 3153 states have call predecessors, (9652), 3467 states have return successors, (14817), 9405 states have call predecessors, (14817), 9623 states have call successors, (14817) [2024-11-09 05:36:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47299 states to 47299 states and 75671 transitions. [2024-11-09 05:36:23,560 INFO L78 Accepts]: Start accepts. Automaton has 47299 states and 75671 transitions. Word has length 174 [2024-11-09 05:36:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:36:23,560 INFO L471 AbstractCegarLoop]: Abstraction has 47299 states and 75671 transitions. [2024-11-09 05:36:23,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-09 05:36:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 47299 states and 75671 transitions. [2024-11-09 05:36:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 05:36:23,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:36:23,592 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 05:36:23,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 05:36:23,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 05:36:23,793 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:36:23,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:36:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash -834318171, now seen corresponding path program 1 times [2024-11-09 05:36:23,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:36:23,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415631486] [2024-11-09 05:36:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:23,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:36:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 05:36:24,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:36:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415631486] [2024-11-09 05:36:24,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415631486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:36:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98117736] [2024-11-09 05:36:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:36:24,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:36:24,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:36:24,881 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:36:24,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_208a9c92-de7b-45f1-b96f-f48ecb82d5f1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:36:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:36:25,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:36:25,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 05:36:25,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:36:25,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98117736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:36:25,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:36:25,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2024-11-09 05:36:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378661289] [2024-11-09 05:36:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:36:25,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:36:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:36:25,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:36:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:36:25,446 INFO L87 Difference]: Start difference. First operand 47299 states and 75671 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-09 05:36:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:36:29,522 INFO L93 Difference]: Finished difference Result 91901 states and 148427 transitions. [2024-11-09 05:36:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:36:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 174 [2024-11-09 05:36:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:36:29,880 INFO L225 Difference]: With dead ends: 91901 [2024-11-09 05:36:29,880 INFO L226 Difference]: Without dead ends: 47527 [2024-11-09 05:36:30,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:36:30,188 INFO L432 NwaCegarLoop]: 626 mSDtfsCounter, 17 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:36:30,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1215 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:36:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47527 states.