./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2 --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 2156ba1e79a86c856553f139302f2b9940a34efa4e31eb139d6bea893c29b00d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:39:49,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:39:49,709 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:39:49,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:39:49,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:39:49,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:39:49,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:39:49,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:39:49,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:39:49,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:39:49,758 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:39:49,759 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:39:49,760 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:39:49,761 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:39:49,763 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:39:49,763 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:39:49,764 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:39:49,764 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:39:49,764 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:39:49,767 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:39:49,768 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:39:49,786 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:39:49,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:39:49,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:39:49,788 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:39:49,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:39:49,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:39:49,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:39:49,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:39:49,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:39:49,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:39:49,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:39:49,791 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:39:49,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:39:49,792 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:39:49,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:39:49,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:39:49,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:39:49,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:49,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:39:49,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:39:49,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:39:49,794 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:39:49,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:39:49,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:39:49,795 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:39:49,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:39:49,795 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_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2156ba1e79a86c856553f139302f2b9940a34efa4e31eb139d6bea893c29b00d [2024-11-02 12:39:50,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:39:50,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:39:50,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:39:50,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:39:50,133 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:39:50,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c Unable to find full path for "g++" [2024-11-02 12:39:52,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:39:52,513 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:39:52,514 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c [2024-11-02 12:39:52,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/data/fca8121a0/c56c9cd449ce4b07b4ad10f88d9df0b6/FLAG2f6f904f5 [2024-11-02 12:39:52,548 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/data/fca8121a0/c56c9cd449ce4b07b4ad10f88d9df0b6 [2024-11-02 12:39:52,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:39:52,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:39:52,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:52,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:39:52,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:39:52,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:52" (1/1) ... [2024-11-02 12:39:52,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64461632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:52, skipping insertion in model container [2024-11-02 12:39:52,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:52" (1/1) ... [2024-11-02 12:39:52,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:39:53,221 WARN L251 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_f6120f09-b787-45ef-9d9e-afab6856a5fa/sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c[71954,71967] [2024-11-02 12:39:53,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:53,240 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:39:53,253 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-11-02 12:39:53,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [148] [2024-11-02 12:39:53,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [505] [2024-11-02 12:39:53,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [871] [2024-11-02 12:39:53,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1034] [2024-11-02 12:39:53,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1069] [2024-11-02 12:39:53,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1189] [2024-11-02 12:39:53,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1201] [2024-11-02 12:39:53,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2729] [2024-11-02 12:39:53,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3390] [2024-11-02 12:39:53,445 WARN L251 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_f6120f09-b787-45ef-9d9e-afab6856a5fa/sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c[71954,71967] [2024-11-02 12:39:53,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:53,510 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:39:53,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53 WrapperNode [2024-11-02 12:39:53,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:53,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:53,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:39:53,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:39:53,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,677 INFO L138 Inliner]: procedures = 93, calls = 335, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1087 [2024-11-02 12:39:53,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:53,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:39:53,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:39:53,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:39:53,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:39:53,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:39:53,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:39:53,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:39:53,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2024-11-02 12:39:53,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:53,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:53,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:39:53,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:39:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:39:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-02 12:39:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-02 12:39:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-02 12:39:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-02 12:39:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-02 12:39:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-02 12:39:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-02 12:39:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-02 12:39:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-02 12:39:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-02 12:39:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:39:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:39:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:39:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:39:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-02 12:39:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-02 12:39:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-02 12:39:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-02 12:39:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-02 12:39:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-02 12:39:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-02 12:39:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-02 12:39:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-02 12:39:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-02 12:39:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-02 12:39:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-02 12:39:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-02 12:39:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-02 12:39:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-02 12:39:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-02 12:39:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-02 12:39:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-02 12:39:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-02 12:39:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-02 12:39:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-02 12:39:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-02 12:39:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2024-11-02 12:39:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2024-11-02 12:39:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:39:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-02 12:39:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-02 12:39:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-02 12:39:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-02 12:39:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-02 12:39:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-02 12:39:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:39:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:39:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-02 12:39:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-02 12:39:54,104 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:39:54,106 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:39:55,723 INFO L? ?]: Removed 437 outVars from TransFormulas that were not future-live. [2024-11-02 12:39:55,724 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:39:56,811 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:39:56,811 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:39:56,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:56 BoogieIcfgContainer [2024-11-02 12:39:56,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:39:56,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:39:56,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:39:56,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:39:56,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:39:52" (1/3) ... [2024-11-02 12:39:56,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d19f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:56, skipping insertion in model container [2024-11-02 12:39:56,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (2/3) ... [2024-11-02 12:39:56,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d19f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:56, skipping insertion in model container [2024-11-02 12:39:56,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:56" (3/3) ... [2024-11-02 12:39:56,822 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product11.cil.c [2024-11-02 12:39:56,843 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:39:56,843 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:39:56,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:39:56,951 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;@7e7730c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:39:56,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:39:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 359 states, 243 states have (on average 1.6008230452674896) internal successors, (389), 264 states have internal predecessors, (389), 91 states have call successors, (91), 23 states have call predecessors, (91), 23 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-02 12:39:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-02 12:39:56,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:56,984 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-02 12:39:56,985 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:56,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1373445045, now seen corresponding path program 1 times [2024-11-02 12:39:57,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:57,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541826912] [2024-11-02 12:39:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:57,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:39:57,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:57,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541826912] [2024-11-02 12:39:57,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541826912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:57,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:57,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:57,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123119819] [2024-11-02 12:39:57,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:57,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:39:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:39:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:39:57,629 INFO L87 Difference]: Start difference. First operand has 359 states, 243 states have (on average 1.6008230452674896) internal successors, (389), 264 states have internal predecessors, (389), 91 states have call successors, (91), 23 states have call predecessors, (91), 23 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-02 12:39:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:57,819 INFO L93 Difference]: Finished difference Result 377 states and 598 transitions. [2024-11-02 12:39:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:39:57,822 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 77 [2024-11-02 12:39:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:57,839 INFO L225 Difference]: With dead ends: 377 [2024-11-02 12:39:57,840 INFO L226 Difference]: Without dead ends: 355 [2024-11-02 12:39:57,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:39:57,847 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:57,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:39:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-02 12:39:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2024-11-02 12:39:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 241 states have (on average 1.5892116182572613) internal successors, (383), 260 states have internal predecessors, (383), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-02 12:39:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 560 transitions. [2024-11-02 12:39:57,961 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 560 transitions. Word has length 77 [2024-11-02 12:39:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:57,965 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 560 transitions. [2024-11-02 12:39:57,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-02 12:39:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 560 transitions. [2024-11-02 12:39:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-02 12:39:57,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:57,975 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-02 12:39:57,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:39:57,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:39:57,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1701691530, now seen corresponding path program 1 times [2024-11-02 12:39:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:57,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579068541] [2024-11-02 12:39:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:57,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:39:58,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579068541] [2024-11-02 12:39:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579068541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:58,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:58,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:39:58,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174061460] [2024-11-02 12:39:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:58,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:39:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:39:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:39:58,595 INFO L87 Difference]: Start difference. First operand 355 states and 560 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-02 12:40:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:01,384 INFO L93 Difference]: Finished difference Result 1074 states and 1721 transitions. [2024-11-02 12:40:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:40:01,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 78 [2024-11-02 12:40:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:01,393 INFO L225 Difference]: With dead ends: 1074 [2024-11-02 12:40:01,393 INFO L226 Difference]: Without dead ends: 735 [2024-11-02 12:40:01,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:40:01,399 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 1099 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:01,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1367 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-02 12:40:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-02 12:40:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 697. [2024-11-02 12:40:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 482 states have (on average 1.6016597510373445) internal successors, (772), 515 states have internal predecessors, (772), 172 states have call successors, (172), 42 states have call predecessors, (172), 42 states have return successors, (173), 164 states have call predecessors, (173), 167 states have call successors, (173) [2024-11-02 12:40:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1117 transitions. [2024-11-02 12:40:01,477 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1117 transitions. Word has length 78 [2024-11-02 12:40:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:01,478 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1117 transitions. [2024-11-02 12:40:01,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-02 12:40:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1117 transitions. [2024-11-02 12:40:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-02 12:40:01,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:01,482 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-02 12:40:01,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:40:01,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash 169199003, now seen corresponding path program 1 times [2024-11-02 12:40:01,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:01,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215608405] [2024-11-02 12:40:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:40:01,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215608405] [2024-11-02 12:40:01,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215608405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:01,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:01,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:40:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910977412] [2024-11-02 12:40:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:01,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:40:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:40:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:40:01,950 INFO L87 Difference]: Start difference. First operand 697 states and 1117 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:40:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:02,722 INFO L93 Difference]: Finished difference Result 768 states and 1229 transitions. [2024-11-02 12:40:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2024-11-02 12:40:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:02,734 INFO L225 Difference]: With dead ends: 768 [2024-11-02 12:40:02,734 INFO L226 Difference]: Without dead ends: 753 [2024-11-02 12:40:02,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:40:02,738 INFO L432 NwaCegarLoop]: 518 mSDtfsCounter, 625 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:02,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1733 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:40:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-02 12:40:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 701. [2024-11-02 12:40:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 486 states have (on average 1.5967078189300412) internal successors, (776), 519 states have internal predecessors, (776), 172 states have call successors, (172), 42 states have call predecessors, (172), 42 states have return successors, (173), 164 states have call predecessors, (173), 167 states have call successors, (173) [2024-11-02 12:40:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1121 transitions. [2024-11-02 12:40:02,870 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1121 transitions. Word has length 82 [2024-11-02 12:40:02,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:02,871 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1121 transitions. [2024-11-02 12:40:02,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:40:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1121 transitions. [2024-11-02 12:40:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-02 12:40:02,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:02,875 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-02 12:40:02,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:40:02,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:02,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1891134955, now seen corresponding path program 1 times [2024-11-02 12:40:02,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:02,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186589495] [2024-11-02 12:40:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:02,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:40:03,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186589495] [2024-11-02 12:40:03,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186589495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:03,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:03,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:40:03,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448748462] [2024-11-02 12:40:03,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:03,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:40:03,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:03,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:40:03,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:40:03,200 INFO L87 Difference]: Start difference. First operand 701 states and 1121 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-02 12:40:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:03,486 INFO L93 Difference]: Finished difference Result 716 states and 1139 transitions. [2024-11-02 12:40:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:03,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 87 [2024-11-02 12:40:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:03,493 INFO L225 Difference]: With dead ends: 716 [2024-11-02 12:40:03,493 INFO L226 Difference]: Without dead ends: 701 [2024-11-02 12:40:03,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:40:03,495 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 0 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:03,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2098 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:40:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-02 12:40:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2024-11-02 12:40:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 486 states have (on average 1.5925925925925926) internal successors, (774), 519 states have internal predecessors, (774), 172 states have call successors, (172), 42 states have call predecessors, (172), 42 states have return successors, (173), 164 states have call predecessors, (173), 167 states have call successors, (173) [2024-11-02 12:40:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1119 transitions. [2024-11-02 12:40:03,548 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1119 transitions. Word has length 87 [2024-11-02 12:40:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:03,548 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1119 transitions. [2024-11-02 12:40:03,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-02 12:40:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1119 transitions. [2024-11-02 12:40:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-02 12:40:03,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:03,552 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-02 12:40:03,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:40:03,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:03,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:03,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1828674541, now seen corresponding path program 1 times [2024-11-02 12:40:03,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:03,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741552338] [2024-11-02 12:40:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:03,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:40:03,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:03,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741552338] [2024-11-02 12:40:03,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741552338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:03,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:03,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:03,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456498537] [2024-11-02 12:40:03,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:03,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:03,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:03,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:03,761 INFO L87 Difference]: Start difference. First operand 701 states and 1119 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:03,985 INFO L93 Difference]: Finished difference Result 2041 states and 3293 transitions. [2024-11-02 12:40:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2024-11-02 12:40:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:03,997 INFO L225 Difference]: With dead ends: 2041 [2024-11-02 12:40:03,997 INFO L226 Difference]: Without dead ends: 1356 [2024-11-02 12:40:04,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:04,003 INFO L432 NwaCegarLoop]: 585 mSDtfsCounter, 518 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:04,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1088 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2024-11-02 12:40:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1328. [2024-11-02 12:40:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 940 states have (on average 1.6053191489361702) internal successors, (1509), 1002 states have internal predecessors, (1509), 310 states have call successors, (310), 75 states have call predecessors, (310), 77 states have return successors, (324), 288 states have call predecessors, (324), 305 states have call successors, (324) [2024-11-02 12:40:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2143 transitions. [2024-11-02 12:40:04,108 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2143 transitions. Word has length 94 [2024-11-02 12:40:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:04,109 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2143 transitions. [2024-11-02 12:40:04,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2143 transitions. [2024-11-02 12:40:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-02 12:40:04,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:04,113 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-02 12:40:04,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:40:04,113 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:04,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash -854463157, now seen corresponding path program 1 times [2024-11-02 12:40:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:04,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621141060] [2024-11-02 12:40:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:40:04,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621141060] [2024-11-02 12:40:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621141060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:04,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:04,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:04,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534313794] [2024-11-02 12:40:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:04,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:04,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:04,257 INFO L87 Difference]: Start difference. First operand 1328 states and 2143 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:04,597 INFO L93 Difference]: Finished difference Result 3921 states and 6388 transitions. [2024-11-02 12:40:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:04,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 95 [2024-11-02 12:40:04,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:04,618 INFO L225 Difference]: With dead ends: 3921 [2024-11-02 12:40:04,619 INFO L226 Difference]: Without dead ends: 2612 [2024-11-02 12:40:04,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:04,627 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 517 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:04,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1095 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2024-11-02 12:40:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2583. [2024-11-02 12:40:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1849 states have (on average 1.6106003244997296) internal successors, (2978), 1969 states have internal predecessors, (2978), 586 states have call successors, (586), 141 states have call predecessors, (586), 147 states have return successors, (642), 536 states have call predecessors, (642), 581 states have call successors, (642) [2024-11-02 12:40:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4206 transitions. [2024-11-02 12:40:04,816 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4206 transitions. Word has length 95 [2024-11-02 12:40:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:04,817 INFO L471 AbstractCegarLoop]: Abstraction has 2583 states and 4206 transitions. [2024-11-02 12:40:04,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4206 transitions. [2024-11-02 12:40:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-02 12:40:04,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:04,821 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:04,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:40:04,821 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:04,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash -718677419, now seen corresponding path program 1 times [2024-11-02 12:40:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988789866] [2024-11-02 12:40:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:40:04,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988789866] [2024-11-02 12:40:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988789866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:04,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040435514] [2024-11-02 12:40:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:04,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:04,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:04,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:04,983 INFO L87 Difference]: Start difference. First operand 2583 states and 4206 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:05,407 INFO L93 Difference]: Finished difference Result 7682 states and 12656 transitions. [2024-11-02 12:40:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:05,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 96 [2024-11-02 12:40:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:05,456 INFO L225 Difference]: With dead ends: 7682 [2024-11-02 12:40:05,457 INFO L226 Difference]: Without dead ends: 5124 [2024-11-02 12:40:05,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:05,474 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 516 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:05,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1101 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2024-11-02 12:40:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 5094. [2024-11-02 12:40:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 3668 states have (on average 1.6117775354416575) internal successors, (5912), 3904 states have internal predecessors, (5912), 1138 states have call successors, (1138), 273 states have call predecessors, (1138), 287 states have return successors, (1338), 1032 states have call predecessors, (1338), 1133 states have call successors, (1338) [2024-11-02 12:40:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 8388 transitions. [2024-11-02 12:40:05,931 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 8388 transitions. Word has length 96 [2024-11-02 12:40:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:05,932 INFO L471 AbstractCegarLoop]: Abstraction has 5094 states and 8388 transitions. [2024-11-02 12:40:05,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 8388 transitions. [2024-11-02 12:40:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-02 12:40:05,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:05,936 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:05,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:40:05,936 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:05,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash -804282931, now seen corresponding path program 1 times [2024-11-02 12:40:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:05,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127874225] [2024-11-02 12:40:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:40:06,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127874225] [2024-11-02 12:40:06,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127874225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:06,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:06,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:06,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729816391] [2024-11-02 12:40:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:06,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:06,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:06,110 INFO L87 Difference]: Start difference. First operand 5094 states and 8388 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:06,788 INFO L93 Difference]: Finished difference Result 15205 states and 25489 transitions. [2024-11-02 12:40:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:06,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 97 [2024-11-02 12:40:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:06,886 INFO L225 Difference]: With dead ends: 15205 [2024-11-02 12:40:06,887 INFO L226 Difference]: Without dead ends: 10148 [2024-11-02 12:40:06,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:06,920 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 515 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:06,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1107 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10148 states. [2024-11-02 12:40:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10148 to 10117. [2024-11-02 12:40:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10117 states, 7307 states have (on average 1.6107841795538524) internal successors, (11770), 7775 states have internal predecessors, (11770), 2242 states have call successors, (2242), 537 states have call predecessors, (2242), 567 states have return successors, (2958), 2024 states have call predecessors, (2958), 2237 states have call successors, (2958) [2024-11-02 12:40:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10117 states to 10117 states and 16970 transitions. [2024-11-02 12:40:07,847 INFO L78 Accepts]: Start accepts. Automaton has 10117 states and 16970 transitions. Word has length 97 [2024-11-02 12:40:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:07,848 INFO L471 AbstractCegarLoop]: Abstraction has 10117 states and 16970 transitions. [2024-11-02 12:40:07,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 10117 states and 16970 transitions. [2024-11-02 12:40:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-02 12:40:07,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:07,854 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-02 12:40:07,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:40:07,854 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:07,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 836917399, now seen corresponding path program 1 times [2024-11-02 12:40:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121088030] [2024-11-02 12:40:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:07,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:40:08,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121088030] [2024-11-02 12:40:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121088030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:08,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:08,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:40:08,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129998391] [2024-11-02 12:40:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:08,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:40:08,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:40:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:08,041 INFO L87 Difference]: Start difference. First operand 10117 states and 16970 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:08,748 INFO L93 Difference]: Finished difference Result 10777 states and 18119 transitions. [2024-11-02 12:40:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:40:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 98 [2024-11-02 12:40:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:08,859 INFO L225 Difference]: With dead ends: 10777 [2024-11-02 12:40:08,859 INFO L226 Difference]: Without dead ends: 10766 [2024-11-02 12:40:08,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:40:08,869 INFO L432 NwaCegarLoop]: 587 mSDtfsCounter, 501 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:08,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1105 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10766 states. [2024-11-02 12:40:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10766 to 10736. [2024-11-02 12:40:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10736 states, 7754 states have (on average 1.6101367036368326) internal successors, (12485), 8251 states have internal predecessors, (12485), 2380 states have call successors, (2380), 570 states have call predecessors, (2380), 601 states have return successors, (3198), 2147 states have call predecessors, (3198), 2375 states have call successors, (3198) [2024-11-02 12:40:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 18063 transitions. [2024-11-02 12:40:09,823 INFO L78 Accepts]: Start accepts. Automaton has 10736 states and 18063 transitions. Word has length 98 [2024-11-02 12:40:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:09,828 INFO L471 AbstractCegarLoop]: Abstraction has 10736 states and 18063 transitions. [2024-11-02 12:40:09,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:40:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10736 states and 18063 transitions. [2024-11-02 12:40:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-02 12:40:09,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:09,843 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:09,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:40:09,844 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:09,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash 718711135, now seen corresponding path program 1 times [2024-11-02 12:40:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:09,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125842486] [2024-11-02 12:40:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:09,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-02 12:40:10,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:10,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125842486] [2024-11-02 12:40:10,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125842486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:10,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:40:10,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:40:10,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839952805] [2024-11-02 12:40:10,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:10,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:40:10,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:10,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:40:10,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:40:10,166 INFO L87 Difference]: Start difference. First operand 10736 states and 18063 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-02 12:40:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:11,142 INFO L93 Difference]: Finished difference Result 21523 states and 36788 transitions. [2024-11-02 12:40:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:40:11,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 143 [2024-11-02 12:40:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:11,255 INFO L225 Difference]: With dead ends: 21523 [2024-11-02 12:40:11,255 INFO L226 Difference]: Without dead ends: 10804 [2024-11-02 12:40:11,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:40:11,338 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 0 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:11,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1569 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:40:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10804 states. [2024-11-02 12:40:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10804 to 10804. [2024-11-02 12:40:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10804 states, 7822 states have (on average 1.6048325236512402) internal successors, (12553), 8319 states have internal predecessors, (12553), 2380 states have call successors, (2380), 570 states have call predecessors, (2380), 601 states have return successors, (3198), 2147 states have call predecessors, (3198), 2375 states have call successors, (3198) [2024-11-02 12:40:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 18131 transitions. [2024-11-02 12:40:12,425 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 18131 transitions. Word has length 143 [2024-11-02 12:40:12,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:12,426 INFO L471 AbstractCegarLoop]: Abstraction has 10804 states and 18131 transitions. [2024-11-02 12:40:12,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-02 12:40:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 18131 transitions. [2024-11-02 12:40:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-02 12:40:12,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:12,434 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:12,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:40:12,435 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:12,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 610530043, now seen corresponding path program 1 times [2024-11-02 12:40:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711995956] [2024-11-02 12:40:12,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:12,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-02 12:40:12,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:12,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711995956] [2024-11-02 12:40:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711995956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:40:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277514976] [2024-11-02 12:40:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:12,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:40:12,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:40:12,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:40:12,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:40:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:13,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:40:13,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-02 12:40:13,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:40:13,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277514976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:13,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:40:13,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-02 12:40:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219215981] [2024-11-02 12:40:13,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:13,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:40:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:40:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:40:13,419 INFO L87 Difference]: Start difference. First operand 10804 states and 18131 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-02 12:40:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:40:14,581 INFO L93 Difference]: Finished difference Result 23121 states and 39814 transitions. [2024-11-02 12:40:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:40:14,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 146 [2024-11-02 12:40:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:40:14,691 INFO L225 Difference]: With dead ends: 23121 [2024-11-02 12:40:14,691 INFO L226 Difference]: Without dead ends: 12334 [2024-11-02 12:40:14,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:40:14,750 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 144 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:40:14,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1372 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:40:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12334 states. [2024-11-02 12:40:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12334 to 12130. [2024-11-02 12:40:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12130 states, 9114 states have (on average 1.6496598639455782) internal successors, (15035), 9611 states have internal predecessors, (15035), 2380 states have call successors, (2380), 604 states have call predecessors, (2380), 635 states have return successors, (3198), 2147 states have call predecessors, (3198), 2375 states have call successors, (3198) [2024-11-02 12:40:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12130 states to 12130 states and 20613 transitions. [2024-11-02 12:40:15,792 INFO L78 Accepts]: Start accepts. Automaton has 12130 states and 20613 transitions. Word has length 146 [2024-11-02 12:40:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:40:15,793 INFO L471 AbstractCegarLoop]: Abstraction has 12130 states and 20613 transitions. [2024-11-02 12:40:15,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-02 12:40:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12130 states and 20613 transitions. [2024-11-02 12:40:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-02 12:40:15,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:40:15,803 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:40:15,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:40:16,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-02 12:40:16,009 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:40:16,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:40:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash 498971386, now seen corresponding path program 1 times [2024-11-02 12:40:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:40:16,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437340039] [2024-11-02 12:40:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:40:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-02 12:40:16,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:40:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437340039] [2024-11-02 12:40:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437340039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:40:16,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715474303] [2024-11-02 12:40:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:40:16,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:40:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:40:16,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:40:16,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6120f09-b787-45ef-9d9e-afab6856a5fa/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:40:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:40:16,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:40:16,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:40:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-02 12:40:16,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:40:16,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715474303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:40:16,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:40:16,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-02 12:40:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777883885] [2024-11-02 12:40:16,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:40:16,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:40:16,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:40:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:40:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:40:16,957 INFO L87 Difference]: Start difference. First operand 12130 states and 20613 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25)