./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.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_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/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_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/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_f88b68ca-7433-4b03-8336-5848b588a018/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 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:26:27,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:26:27,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:26:27,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:26:27,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:26:27,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:26:27,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:26:27,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:26:27,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:26:27,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:26:27,387 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:26:27,387 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:26:27,388 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:26:27,388 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:26:27,391 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:26:27,392 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:26:27,392 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:26:27,392 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:26:27,393 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:26:27,393 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:26:27,393 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:26:27,396 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:26:27,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:26:27,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:26:27,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:26:27,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:26:27,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:26:27,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:26:27,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:26:27,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:26:27,408 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:26:27,409 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:26:27,409 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:26:27,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:26:27,409 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:26:27,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:26:27,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:26:27,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:26:27,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:27,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:26:27,411 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:26:27,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:26:27,412 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:26:27,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:26:27,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:26:27,413 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:26:27,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:26:27,413 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_f88b68ca-7433-4b03-8336-5848b588a018/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 [2024-11-02 12:26:27,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:26:27,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:26:27,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:26:27,745 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:26:27,746 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:26:27,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c Unable to find full path for "g++" [2024-11-02 12:26:29,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:26:30,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:26:30,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c [2024-11-02 12:26:30,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/data/d9bd4dbed/05f34f44f774406c8bd46ae6fa63c861/FLAG8f5617ded [2024-11-02 12:26:30,452 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/data/d9bd4dbed/05f34f44f774406c8bd46ae6fa63c861 [2024-11-02 12:26:30,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:26:30,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:26:30,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:30,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:26:30,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:26:30,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:30" (1/1) ... [2024-11-02 12:26:30,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160b7aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:30, skipping insertion in model container [2024-11-02 12:26:30,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:30" (1/1) ... [2024-11-02 12:26:30,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:26:31,066 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_f88b68ca-7433-4b03-8336-5848b588a018/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2024-11-02 12:26:31,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:31,263 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:26:31,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-11-02 12:26:31,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [150] [2024-11-02 12:26:31,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [164] [2024-11-02 12:26:31,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [284] [2024-11-02 12:26:31,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [322] [2024-11-02 12:26:31,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1825] [2024-11-02 12:26:31,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1834] [2024-11-02 12:26:31,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2200] [2024-11-02 12:26:31,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2552] [2024-11-02 12:26:31,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2733] [2024-11-02 12:26:31,353 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_f88b68ca-7433-4b03-8336-5848b588a018/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2024-11-02 12:26:31,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:31,511 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:26:31,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31 WrapperNode [2024-11-02 12:26:31,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:31,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:31,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:26:31,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:26:31,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,629 INFO L138 Inliner]: procedures = 92, calls = 338, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 816 [2024-11-02 12:26:31,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:31,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:26:31,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:26:31,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:26:31,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:26:31,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:26:31,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:26:31,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:26:31,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (1/1) ... [2024-11-02 12:26:31,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:31,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:31,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:26:31,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88b68ca-7433-4b03-8336-5848b588a018/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:26:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:26:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-02 12:26:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-02 12:26:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-02 12:26:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-02 12:26:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-02 12:26:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-02 12:26:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-02 12:26:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-02 12:26:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-02 12:26:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-02 12:26:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:26:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:26:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:26:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:26:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-02 12:26:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-02 12:26:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-02 12:26:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-02 12:26:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-02 12:26:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-02 12:26:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-02 12:26:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-02 12:26:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-02 12:26:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-02 12:26:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-02 12:26:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-02 12:26:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-02 12:26:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-02 12:26:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-02 12:26:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-02 12:26:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-02 12:26:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-02 12:26:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-02 12:26:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-02 12:26:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:26:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2024-11-02 12:26:31,834 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2024-11-02 12:26:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-02 12:26:31,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-02 12:26:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-02 12:26:31,835 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-02 12:26:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-02 12:26:31,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-02 12:26:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:26:31,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:26:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-02 12:26:31,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-02 12:26:32,025 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:26:32,028 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:26:33,667 INFO L? ?]: Removed 429 outVars from TransFormulas that were not future-live. [2024-11-02 12:26:33,667 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:26:34,776 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:26:34,777 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:26:34,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:34 BoogieIcfgContainer [2024-11-02 12:26:34,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:26:34,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:26:34,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:26:34,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:26:34,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:26:30" (1/3) ... [2024-11-02 12:26:34,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130754b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:34, skipping insertion in model container [2024-11-02 12:26:34,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:31" (2/3) ... [2024-11-02 12:26:34,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130754b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:34, skipping insertion in model container [2024-11-02 12:26:34,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:34" (3/3) ... [2024-11-02 12:26:34,791 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product18.cil.c [2024-11-02 12:26:34,810 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:26:34,810 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:26:34,914 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:26:34,922 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;@2f939512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:26:34,923 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:26:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 356 states, 241 states have (on average 1.6182572614107884) internal successors, (390), 264 states have internal predecessors, (390), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-02 12:26:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 12:26:34,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:34,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:34,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:34,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1377136617, now seen corresponding path program 1 times [2024-11-02 12:26:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:34,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625828547] [2024-11-02 12:26:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:35,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625828547] [2024-11-02 12:26:35,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625828547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:35,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:35,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:26:35,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459965098] [2024-11-02 12:26:35,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:35,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:26:35,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:26:35,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:26:35,509 INFO L87 Difference]: Start difference. First operand has 356 states, 241 states have (on average 1.6182572614107884) internal successors, (390), 264 states have internal predecessors, (390), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:26:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:35,773 INFO L93 Difference]: Finished difference Result 374 states and 599 transitions. [2024-11-02 12:26:35,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:26:35,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-02 12:26:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:35,798 INFO L225 Difference]: With dead ends: 374 [2024-11-02 12:26:35,798 INFO L226 Difference]: Without dead ends: 352 [2024-11-02 12:26:35,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:26:35,806 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:35,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 530 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-02 12:26:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-11-02 12:26:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 239 states have (on average 1.606694560669456) internal successors, (384), 260 states have internal predecessors, (384), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-02 12:26:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 561 transitions. [2024-11-02 12:26:35,914 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 561 transitions. Word has length 39 [2024-11-02 12:26:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:35,917 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 561 transitions. [2024-11-02 12:26:35,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:26:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 561 transitions. [2024-11-02 12:26:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-02 12:26:35,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:35,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:35,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:26:35,925 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:35,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1300265286, now seen corresponding path program 1 times [2024-11-02 12:26:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:35,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491543702] [2024-11-02 12:26:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:36,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:36,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491543702] [2024-11-02 12:26:36,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491543702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:36,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:36,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:26:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867386793] [2024-11-02 12:26:36,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:36,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:26:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:26:36,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:36,587 INFO L87 Difference]: Start difference. First operand 352 states and 561 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 12:26:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:39,337 INFO L93 Difference]: Finished difference Result 1156 states and 1884 transitions. [2024-11-02 12:26:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:26:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2024-11-02 12:26:39,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:39,349 INFO L225 Difference]: With dead ends: 1156 [2024-11-02 12:26:39,349 INFO L226 Difference]: Without dead ends: 820 [2024-11-02 12:26:39,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:26:39,354 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 1162 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:39,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 970 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-02 12:26:39,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-02 12:26:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 733. [2024-11-02 12:26:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 521 states have (on average 1.6314779270633397) internal successors, (850), 551 states have internal predecessors, (850), 174 states have call successors, (174), 36 states have call predecessors, (174), 37 states have return successors, (176), 158 states have call predecessors, (176), 169 states have call successors, (176) [2024-11-02 12:26:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1200 transitions. [2024-11-02 12:26:39,431 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1200 transitions. Word has length 40 [2024-11-02 12:26:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:39,431 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1200 transitions. [2024-11-02 12:26:39,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 12:26:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1200 transitions. [2024-11-02 12:26:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-02 12:26:39,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:39,437 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:39,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:26:39,437 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:39,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2012647198, now seen corresponding path program 1 times [2024-11-02 12:26:39,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181519695] [2024-11-02 12:26:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:39,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:40,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:40,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181519695] [2024-11-02 12:26:40,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181519695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:40,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:40,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:26:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881417087] [2024-11-02 12:26:40,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:40,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:26:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:26:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:26:40,036 INFO L87 Difference]: Start difference. First operand 733 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-02 12:26:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:43,365 INFO L93 Difference]: Finished difference Result 2499 states and 4138 transitions. [2024-11-02 12:26:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:26:43,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 62 [2024-11-02 12:26:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:43,396 INFO L225 Difference]: With dead ends: 2499 [2024-11-02 12:26:43,396 INFO L226 Difference]: Without dead ends: 1783 [2024-11-02 12:26:43,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:26:43,402 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 1384 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:43,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1685 Invalid, 3001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-02 12:26:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-02 12:26:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1696. [2024-11-02 12:26:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1233 states have (on average 1.64882400648824) internal successors, (2033), 1293 states have internal predecessors, (2033), 376 states have call successors, (376), 75 states have call predecessors, (376), 86 states have return successors, (403), 351 states have call predecessors, (403), 371 states have call successors, (403) [2024-11-02 12:26:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2812 transitions. [2024-11-02 12:26:43,627 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2812 transitions. Word has length 62 [2024-11-02 12:26:43,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:43,628 INFO L471 AbstractCegarLoop]: Abstraction has 1696 states and 2812 transitions. [2024-11-02 12:26:43,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-02 12:26:43,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2812 transitions. [2024-11-02 12:26:43,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-02 12:26:43,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:43,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:43,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:26:43,633 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:43,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:43,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1850650208, now seen corresponding path program 1 times [2024-11-02 12:26:43,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:43,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51219866] [2024-11-02 12:26:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:43,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:44,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51219866] [2024-11-02 12:26:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51219866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:26:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032424756] [2024-11-02 12:26:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:44,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:26:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:26:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:26:44,016 INFO L87 Difference]: Start difference. First operand 1696 states and 2812 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 12:26:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:47,562 INFO L93 Difference]: Finished difference Result 4670 states and 7758 transitions. [2024-11-02 12:26:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:26:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 65 [2024-11-02 12:26:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:47,588 INFO L225 Difference]: With dead ends: 4670 [2024-11-02 12:26:47,588 INFO L226 Difference]: Without dead ends: 2990 [2024-11-02 12:26:47,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:26:47,601 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 1240 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:47,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 2129 Invalid, 4371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [581 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-02 12:26:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2024-11-02 12:26:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2785. [2024-11-02 12:26:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 1992 states have (on average 1.6350401606425702) internal successors, (3257), 2095 states have internal predecessors, (3257), 657 states have call successors, (657), 111 states have call predecessors, (657), 135 states have return successors, (702), 623 states have call predecessors, (702), 652 states have call successors, (702) [2024-11-02 12:26:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4616 transitions. [2024-11-02 12:26:47,839 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4616 transitions. Word has length 65 [2024-11-02 12:26:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:47,840 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4616 transitions. [2024-11-02 12:26:47,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 12:26:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4616 transitions. [2024-11-02 12:26:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-02 12:26:47,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:47,843 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:47,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:26:47,843 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:47,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:47,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1957531134, now seen corresponding path program 1 times [2024-11-02 12:26:47,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043708571] [2024-11-02 12:26:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:47,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:48,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:48,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043708571] [2024-11-02 12:26:48,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043708571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:48,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:48,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:26:48,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779580692] [2024-11-02 12:26:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:48,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:26:48,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:48,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:26:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:26:48,111 INFO L87 Difference]: Start difference. First operand 2785 states and 4616 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-02 12:26:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:48,464 INFO L93 Difference]: Finished difference Result 4922 states and 8174 transitions. [2024-11-02 12:26:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:26:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-11-02 12:26:48,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:48,490 INFO L225 Difference]: With dead ends: 4922 [2024-11-02 12:26:48,490 INFO L226 Difference]: Without dead ends: 2837 [2024-11-02 12:26:48,525 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 12:26:48,526 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 0 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2082 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 12:26:48,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2082 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2024-11-02 12:26:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2825. [2024-11-02 12:26:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2022 states have (on average 1.6256181998021761) internal successors, (3287), 2125 states have internal predecessors, (3287), 657 states have call successors, (657), 111 states have call predecessors, (657), 145 states have return successors, (722), 633 states have call predecessors, (722), 652 states have call successors, (722) [2024-11-02 12:26:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4666 transitions. [2024-11-02 12:26:48,714 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4666 transitions. Word has length 66 [2024-11-02 12:26:48,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:48,715 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4666 transitions. [2024-11-02 12:26:48,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-02 12:26:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4666 transitions. [2024-11-02 12:26:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-02 12:26:48,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:48,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:48,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:26:48,719 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:48,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1451325350, now seen corresponding path program 1 times [2024-11-02 12:26:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:48,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311366987] [2024-11-02 12:26:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:48,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:49,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311366987] [2024-11-02 12:26:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311366987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:49,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:49,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:26:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524954984] [2024-11-02 12:26:49,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:49,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:26:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:26:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:26:49,157 INFO L87 Difference]: Start difference. First operand 2825 states and 4666 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-02 12:26:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:52,055 INFO L93 Difference]: Finished difference Result 7035 states and 11638 transitions. [2024-11-02 12:26:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:26:52,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 70 [2024-11-02 12:26:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:52,093 INFO L225 Difference]: With dead ends: 7035 [2024-11-02 12:26:52,093 INFO L226 Difference]: Without dead ends: 4718 [2024-11-02 12:26:52,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 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 12:26:52,111 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 1947 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:52,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 1249 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-02 12:26:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4718 states. [2024-11-02 12:26:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4718 to 4583. [2024-11-02 12:26:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 3211 states have (on average 1.582684521955777) internal successors, (5082), 3392 states have internal predecessors, (5082), 1113 states have call successors, (1113), 198 states have call predecessors, (1113), 258 states have return successors, (1249), 1070 states have call predecessors, (1249), 1108 states have call successors, (1249) [2024-11-02 12:26:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7444 transitions. [2024-11-02 12:26:52,579 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7444 transitions. Word has length 70 [2024-11-02 12:26:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:52,580 INFO L471 AbstractCegarLoop]: Abstraction has 4583 states and 7444 transitions. [2024-11-02 12:26:52,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-02 12:26:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7444 transitions. [2024-11-02 12:26:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-02 12:26:52,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:52,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:52,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:26:52,585 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:52,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash 44966243, now seen corresponding path program 1 times [2024-11-02 12:26:52,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:52,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171686007] [2024-11-02 12:26:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:52,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:53,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171686007] [2024-11-02 12:26:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171686007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:53,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:53,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-02 12:26:53,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395092611] [2024-11-02 12:26:53,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:53,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 12:26:53,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 12:26:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:26:53,061 INFO L87 Difference]: Start difference. First operand 4583 states and 7444 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 6 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11)