./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product17.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_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/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_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/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_ced25a40-2b14-4383-a9cd-f671e8db107d/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 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:25:50,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:25:50,714 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:25:50,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:25:50,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:25:50,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:25:50,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:25:50,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:25:50,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:25:50,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:25:50,763 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:25:50,763 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:25:50,764 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:25:50,764 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:25:50,764 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:25:50,765 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:25:50,765 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:25:50,765 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:25:50,766 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:25:50,766 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:25:50,766 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:25:50,770 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:25:50,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:25:50,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:25:50,772 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:25:50,772 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:25:50,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:25:50,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:25:50,773 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:25:50,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:25:50,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:25:50,774 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:25:50,774 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:25:50,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:25:50,774 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:25:50,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:25:50,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:25:50,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:25:50,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:25:50,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:25:50,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:25:50,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:25:50,777 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:25:50,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:25:50,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:25:50,778 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:25:50,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:25:50,778 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_ced25a40-2b14-4383-a9cd-f671e8db107d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 [2024-11-02 12:25:51,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:25:51,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:25:51,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:25:51,106 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:25:51,106 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:25:51,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c Unable to find full path for "g++" [2024-11-02 12:25:53,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:25:53,567 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:25:53,567 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2024-11-02 12:25:53,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/data/71585699d/a6162854d14442538ef53895442f09fd/FLAG12a4725a4 [2024-11-02 12:25:53,616 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/data/71585699d/a6162854d14442538ef53895442f09fd [2024-11-02 12:25:53,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:25:53,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:25:53,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:25:53,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:25:53,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:25:53,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:25:53" (1/1) ... [2024-11-02 12:25:53,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2e1272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:53, skipping insertion in model container [2024-11-02 12:25:53,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:25:53" (1/1) ... [2024-11-02 12:25:53,713 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:25:54,122 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_ced25a40-2b14-4383-a9cd-f671e8db107d/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2024-11-02 12:25:54,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:25:54,397 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:25:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-02 12:25:54,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [721] [2024-11-02 12:25:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1087] [2024-11-02 12:25:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1103] [2024-11-02 12:25:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1112] [2024-11-02 12:25:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1150] [2024-11-02 12:25:54,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2604] [2024-11-02 12:25:54,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2785] [2024-11-02 12:25:54,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2878] [2024-11-02 12:25:54,411 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3228] [2024-11-02 12:25:54,452 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_ced25a40-2b14-4383-a9cd-f671e8db107d/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c[27470,27483] [2024-11-02 12:25:54,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:25:54,545 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:25:54,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54 WrapperNode [2024-11-02 12:25:54,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:25:54,548 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:25:54,548 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:25:54,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:25:54,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,643 INFO L138 Inliner]: procedures = 90, calls = 333, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 790 [2024-11-02 12:25:54,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:25:54,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:25:54,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:25:54,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:25:54,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:25:54,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:25:54,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:25:54,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:25:54,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (1/1) ... [2024-11-02 12:25:54,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:25:54,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:25:54,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:25:54,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:25:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-02 12:25:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-02 12:25:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:25:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-02 12:25:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-02 12:25:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-02 12:25:54,861 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-02 12:25:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-02 12:25:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-02 12:25:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-02 12:25:54,862 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-02 12:25:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-02 12:25:54,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-02 12:25:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:25:54,864 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:25:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:25:54,886 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:25:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-02 12:25:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-02 12:25:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-02 12:25:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-02 12:25:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-02 12:25:54,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-02 12:25:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-02 12:25:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-02 12:25:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-02 12:25:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-02 12:25:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-02 12:25:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-02 12:25:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-02 12:25:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-02 12:25:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-02 12:25:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-02 12:25:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-02 12:25:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-02 12:25:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-02 12:25:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-02 12:25:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:25:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-02 12:25:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-02 12:25:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-02 12:25:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-02 12:25:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-02 12:25:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-02 12:25:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:25:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:25:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-02 12:25:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-02 12:25:55,109 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:25:55,112 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:25:56,777 INFO L? ?]: Removed 427 outVars from TransFormulas that were not future-live. [2024-11-02 12:25:56,777 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:25:57,916 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:25:57,916 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:25:57,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:25:57 BoogieIcfgContainer [2024-11-02 12:25:57,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:25:57,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:25:57,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:25:57,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:25:57,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:25:53" (1/3) ... [2024-11-02 12:25:57,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de1e1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:25:57, skipping insertion in model container [2024-11-02 12:25:57,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:25:54" (2/3) ... [2024-11-02 12:25:57,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de1e1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:25:57, skipping insertion in model container [2024-11-02 12:25:57,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:25:57" (3/3) ... [2024-11-02 12:25:57,932 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2024-11-02 12:25:57,955 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:25:57,956 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:25:58,071 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:25:58,080 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;@271ab942, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:25:58,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:25:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-02 12:25:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-02 12:25:58,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:58,119 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-02 12:25:58,119 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:58,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1848822970, now seen corresponding path program 1 times [2024-11-02 12:25:58,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:58,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727674424] [2024-11-02 12:25:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:58,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:25:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:25:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:25:59,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:25:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727674424] [2024-11-02 12:25:59,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727674424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:25:59,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:25:59,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:25:59,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664206261] [2024-11-02 12:25:59,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:25:59,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:25:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:25:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:25:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:25:59,776 INFO L87 Difference]: Start difference. First operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-02 12:26:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:03,667 INFO L93 Difference]: Finished difference Result 1177 states and 1929 transitions. [2024-11-02 12:26:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:26:03,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 62 [2024-11-02 12:26:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:03,710 INFO L225 Difference]: With dead ends: 1177 [2024-11-02 12:26:03,710 INFO L226 Difference]: Without dead ends: 840 [2024-11-02 12:26:03,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:26:03,730 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 1381 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:03,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 1648 Invalid, 3014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [452 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-02 12:26:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-11-02 12:26:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2024-11-02 12:26:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 558 states have (on average 1.636200716845878) internal successors, (913), 593 states have internal predecessors, (913), 188 states have call successors, (188), 42 states have call predecessors, (188), 44 states have return successors, (189), 180 states have call predecessors, (189), 183 states have call successors, (189) [2024-11-02 12:26:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1290 transitions. [2024-11-02 12:26:03,954 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1290 transitions. Word has length 62 [2024-11-02 12:26:03,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:03,955 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1290 transitions. [2024-11-02 12:26:03,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-02 12:26:03,956 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1290 transitions. [2024-11-02 12:26:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-02 12:26:03,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:03,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:03,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:26:03,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:03,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash -38535152, now seen corresponding path program 1 times [2024-11-02 12:26:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963243422] [2024-11-02 12:26:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:26:04,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963243422] [2024-11-02 12:26:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963243422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:26:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028510859] [2024-11-02 12:26:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:04,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:26:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:26:04,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:26:04,444 INFO L87 Difference]: Start difference. First operand 791 states and 1290 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:26:04,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:04,727 INFO L93 Difference]: Finished difference Result 1273 states and 2078 transitions. [2024-11-02 12:26:04,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:26:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2024-11-02 12:26:04,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:04,741 INFO L225 Difference]: With dead ends: 1273 [2024-11-02 12:26:04,741 INFO L226 Difference]: Without dead ends: 807 [2024-11-02 12:26:04,745 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 12:26:04,747 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 0 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:04,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2066 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:04,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-02 12:26:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2024-11-02 12:26:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 567 states have (on average 1.6261022927689595) internal successors, (922), 602 states have internal predecessors, (922), 188 states have call successors, (188), 42 states have call predecessors, (188), 47 states have return successors, (195), 183 states have call predecessors, (195), 183 states have call successors, (195) [2024-11-02 12:26:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1305 transitions. [2024-11-02 12:26:04,890 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1305 transitions. Word has length 67 [2024-11-02 12:26:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:04,891 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1305 transitions. [2024-11-02 12:26:04,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:26:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1305 transitions. [2024-11-02 12:26:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-02 12:26:04,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:04,898 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-02 12:26:04,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:26:04,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:04,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash -136083080, now seen corresponding path program 1 times [2024-11-02 12:26:04,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:04,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910256107] [2024-11-02 12:26:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:04,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:26:05,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:05,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910256107] [2024-11-02 12:26:05,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910256107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:05,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:05,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:26:05,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258989490] [2024-11-02 12:26:05,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:05,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:26:05,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:05,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:26:05,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:26:05,551 INFO L87 Difference]: Start difference. First operand 803 states and 1305 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-02 12:26:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:08,198 INFO L93 Difference]: Finished difference Result 1822 states and 2958 transitions. [2024-11-02 12:26:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:26:08,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 71 [2024-11-02 12:26:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:08,209 INFO L225 Difference]: With dead ends: 1822 [2024-11-02 12:26:08,210 INFO L226 Difference]: Without dead ends: 1248 [2024-11-02 12:26:08,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:26:08,214 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 1925 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:08,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 1302 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-02 12:26:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2024-11-02 12:26:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1154. [2024-11-02 12:26:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5815691158156913) internal successors, (1270), 855 states have internal predecessors, (1270), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2024-11-02 12:26:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1838 transitions. [2024-11-02 12:26:08,335 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1838 transitions. Word has length 71 [2024-11-02 12:26:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:08,335 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1838 transitions. [2024-11-02 12:26:08,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-02 12:26:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1838 transitions. [2024-11-02 12:26:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-02 12:26:08,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:08,338 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:08,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:26:08,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:08,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1108812212, now seen corresponding path program 1 times [2024-11-02 12:26:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559315853] [2024-11-02 12:26:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:08,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:26:08,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559315853] [2024-11-02 12:26:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559315853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:08,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:26:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787302704] [2024-11-02 12:26:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:08,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:26:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:26:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:26:08,573 INFO L87 Difference]: Start difference. First operand 1154 states and 1838 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-02 12:26:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:08,940 INFO L93 Difference]: Finished difference Result 2255 states and 3647 transitions. [2024-11-02 12:26:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:26:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2024-11-02 12:26:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:08,951 INFO L225 Difference]: With dead ends: 2255 [2024-11-02 12:26:08,951 INFO L226 Difference]: Without dead ends: 1170 [2024-11-02 12:26:08,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:26:08,961 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 198 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:08,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1430 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2024-11-02 12:26:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1154. [2024-11-02 12:26:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5417185554171855) internal successors, (1238), 855 states have internal predecessors, (1238), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2024-11-02 12:26:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1806 transitions. [2024-11-02 12:26:09,069 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1806 transitions. Word has length 74 [2024-11-02 12:26:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:09,070 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1806 transitions. [2024-11-02 12:26:09,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-02 12:26:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1806 transitions. [2024-11-02 12:26:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-02 12:26:09,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:09,073 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:09,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:26:09,074 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:09,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash -741446209, now seen corresponding path program 1 times [2024-11-02 12:26:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551476151] [2024-11-02 12:26:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:26:09,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:09,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551476151] [2024-11-02 12:26:09,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551476151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:09,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:26:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701959067] [2024-11-02 12:26:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:09,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:26:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:26:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:26:09,535 INFO L87 Difference]: Start difference. First operand 1154 states and 1806 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-02 12:26:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:12,096 INFO L93 Difference]: Finished difference Result 2210 states and 3477 transitions. [2024-11-02 12:26:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:26:12,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2024-11-02 12:26:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:12,108 INFO L225 Difference]: With dead ends: 2210 [2024-11-02 12:26:12,108 INFO L226 Difference]: Without dead ends: 1342 [2024-11-02 12:26:12,112 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 12:26:12,115 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 923 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:12,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1511 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-02 12:26:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2024-11-02 12:26:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1181. [2024-11-02 12:26:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 821 states have (on average 1.5347137637028014) internal successors, (1260), 877 states have internal predecessors, (1260), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2024-11-02 12:26:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1840 transitions. [2024-11-02 12:26:12,223 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1840 transitions. Word has length 76 [2024-11-02 12:26:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:12,225 INFO L471 AbstractCegarLoop]: Abstraction has 1181 states and 1840 transitions. [2024-11-02 12:26:12,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-02 12:26:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1840 transitions. [2024-11-02 12:26:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-02 12:26:12,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:12,229 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:12,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:26:12,230 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:12,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash -740345125, now seen corresponding path program 1 times [2024-11-02 12:26:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:12,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629645207] [2024-11-02 12:26:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:12,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 12:26:12,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:12,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629645207] [2024-11-02 12:26:12,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629645207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:12,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:26:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064919602] [2024-11-02 12:26:12,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:12,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:26:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:12,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:26:12,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:12,698 INFO L87 Difference]: Start difference. First operand 1181 states and 1840 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 12:26:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:13,557 INFO L93 Difference]: Finished difference Result 1253 states and 1953 transitions. [2024-11-02 12:26:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:26:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 83 [2024-11-02 12:26:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:13,569 INFO L225 Difference]: With dead ends: 1253 [2024-11-02 12:26:13,570 INFO L226 Difference]: Without dead ends: 1238 [2024-11-02 12:26:13,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:26:13,575 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 611 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1681 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 12:26:13,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1681 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:26:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2024-11-02 12:26:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1185. [2024-11-02 12:26:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5321212121212122) internal successors, (1264), 881 states have internal predecessors, (1264), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2024-11-02 12:26:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1844 transitions. [2024-11-02 12:26:13,691 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1844 transitions. Word has length 83 [2024-11-02 12:26:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:13,693 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1844 transitions. [2024-11-02 12:26:13,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 12:26:13,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1844 transitions. [2024-11-02 12:26:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-02 12:26:13,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:13,698 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:13,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:26:13,700 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:13,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2020321711, now seen corresponding path program 1 times [2024-11-02 12:26:13,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:13,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982825749] [2024-11-02 12:26:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 12:26:14,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982825749] [2024-11-02 12:26:14,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982825749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:14,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:14,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:26:14,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077733019] [2024-11-02 12:26:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:14,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:26:14,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:26:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:26:14,018 INFO L87 Difference]: Start difference. First operand 1185 states and 1844 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 12:26:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:14,235 INFO L93 Difference]: Finished difference Result 1200 states and 1862 transitions. [2024-11-02 12:26:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:26:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 88 [2024-11-02 12:26:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:14,246 INFO L225 Difference]: With dead ends: 1200 [2024-11-02 12:26:14,246 INFO L226 Difference]: Without dead ends: 1185 [2024-11-02 12:26:14,247 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 12:26:14,248 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 0 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:14,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2046 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:14,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2024-11-02 12:26:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2024-11-02 12:26:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5284848484848486) internal successors, (1261), 881 states have internal predecessors, (1261), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2024-11-02 12:26:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1841 transitions. [2024-11-02 12:26:14,340 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1841 transitions. Word has length 88 [2024-11-02 12:26:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:14,341 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1841 transitions. [2024-11-02 12:26:14,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 12:26:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1841 transitions. [2024-11-02 12:26:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-02 12:26:14,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:14,343 INFO L215 NwaCegarLoop]: trace histogram [3, 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 12:26:14,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:26:14,344 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:14,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1142621610, now seen corresponding path program 1 times [2024-11-02 12:26:14,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:14,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165563543] [2024-11-02 12:26:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:14,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 12:26:16,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:16,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165563543] [2024-11-02 12:26:16,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165563543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:16,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013834650] [2024-11-02 12:26:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:16,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:16,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:16,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:16,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:26:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:16,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:26:16,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:16,708 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 12:26:16,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:26:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013834650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:16,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:26:16,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2024-11-02 12:26:16,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704299650] [2024-11-02 12:26:16,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:16,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:26:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:16,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:26:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:26:16,712 INFO L87 Difference]: Start difference. First operand 1185 states and 1841 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-02 12:26:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:16,909 INFO L93 Difference]: Finished difference Result 1206 states and 1868 transitions. [2024-11-02 12:26:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:26:16,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 92 [2024-11-02 12:26:16,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:16,918 INFO L225 Difference]: With dead ends: 1206 [2024-11-02 12:26:16,919 INFO L226 Difference]: Without dead ends: 1191 [2024-11-02 12:26:16,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:26:16,922 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 0 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:16,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1526 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2024-11-02 12:26:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2024-11-02 12:26:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 831 states have (on average 1.5246690734055355) internal successors, (1267), 887 states have internal predecessors, (1267), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2024-11-02 12:26:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1847 transitions. [2024-11-02 12:26:17,015 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1847 transitions. Word has length 92 [2024-11-02 12:26:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:17,017 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 1847 transitions. [2024-11-02 12:26:17,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-02 12:26:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1847 transitions. [2024-11-02 12:26:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-02 12:26:17,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:17,021 INFO L215 NwaCegarLoop]: trace histogram [7, 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] [2024-11-02 12:26:17,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:26:17,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:17,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:17,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1239122957, now seen corresponding path program 1 times [2024-11-02 12:26:17,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821904547] [2024-11-02 12:26:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:17,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-02 12:26:18,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:18,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821904547] [2024-11-02 12:26:18,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821904547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:18,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054611175] [2024-11-02 12:26:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:18,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:18,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:18,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:18,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ced25a40-2b14-4383-a9cd-f671e8db107d/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:26:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:19,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-02 12:26:19,114 INFO L278 TraceCheckSpWp]: Computing forward predicates...