./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:47:31,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:47:31,573 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:47:31,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:47:31,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:47:31,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:47:31,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:47:31,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:47:31,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:47:31,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:47:31,635 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:47:31,635 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:47:31,636 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:47:31,636 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:47:31,638 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:47:31,638 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:47:31,640 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:47:31,643 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:47:31,644 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:47:31,644 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:47:31,645 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:47:31,646 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:47:31,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:47:31,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:47:31,647 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:47:31,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:47:31,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:47:31,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:47:31,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:47:31,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:47:31,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:47:31,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:47:31,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:47:31,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:47:31,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:47:31,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:47:31,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:47:31,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:47:31,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:47:31,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:47:31,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:47:31,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:47:31,667 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:47:31,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:47:31,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:47:31,670 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:47:31,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:47:31,671 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_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 [2024-11-09 06:47:32,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:47:32,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:47:32,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:47:32,082 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:47:32,084 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:47:32,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c Unable to find full path for "g++" [2024-11-09 06:47:34,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:47:35,213 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:47:35,216 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2024-11-09 06:47:35,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/data/425bc2c71/60ffc6d7b670468eb7a155c053bb4cbc/FLAG8e4b17476 [2024-11-09 06:47:35,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/data/425bc2c71/60ffc6d7b670468eb7a155c053bb4cbc [2024-11-09 06:47:35,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:47:35,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:47:35,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:47:35,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:47:35,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:47:35,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:47:35" (1/1) ... [2024-11-09 06:47:35,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d7e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:35, skipping insertion in model container [2024-11-09 06:47:35,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:47:35" (1/1) ... [2024-11-09 06:47:35,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:47:35,940 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2024-11-09 06:47:36,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:47:36,272 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:47:36,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-09 06:47:36,288 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [414] [2024-11-09 06:47:36,289 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1087] [2024-11-09 06:47:36,290 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1096] [2024-11-09 06:47:36,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1197] [2024-11-09 06:47:36,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1554] [2024-11-09 06:47:36,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1567] [2024-11-09 06:47:36,292 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1687] [2024-11-09 06:47:36,292 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1722] [2024-11-09 06:47:36,292 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3280] [2024-11-09 06:47:36,355 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2024-11-09 06:47:36,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:47:36,527 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:47:36,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36 WrapperNode [2024-11-09 06:47:36,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:47:36,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:47:36,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:47:36,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:47:36,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,675 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 863 [2024-11-09 06:47:36,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:47:36,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:47:36,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:47:36,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:47:36,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:47:36,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:47:36,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:47:36,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:47:36,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (1/1) ... [2024-11-09 06:47:36,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:47:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:47:36,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:47:36,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:47:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-09 06:47:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-09 06:47:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:47:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-09 06:47:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-09 06:47:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-09 06:47:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-09 06:47:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 06:47:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 06:47:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 06:47:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 06:47:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 06:47:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 06:47:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 06:47:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 06:47:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 06:47:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 06:47:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-09 06:47:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-09 06:47:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-09 06:47:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-09 06:47:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 06:47:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 06:47:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 06:47:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 06:47:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 06:47:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 06:47:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 06:47:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 06:47:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 06:47:36,986 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 06:47:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 06:47:36,986 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 06:47:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 06:47:36,987 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 06:47:36,987 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 06:47:36,987 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 06:47:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 06:47:36,988 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 06:47:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:47:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-09 06:47:36,989 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-09 06:47:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 06:47:36,989 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 06:47:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 06:47:36,990 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 06:47:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 06:47:36,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 06:47:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-09 06:47:36,991 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-09 06:47:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-09 06:47:36,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-09 06:47:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:47:36,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:47:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 06:47:36,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 06:47:37,253 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:47:37,256 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:47:39,368 INFO L? ?]: Removed 450 outVars from TransFormulas that were not future-live. [2024-11-09 06:47:39,368 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:47:40,719 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:47:40,720 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:47:40,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:47:40 BoogieIcfgContainer [2024-11-09 06:47:40,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:47:40,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:47:40,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:47:40,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:47:40,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:47:35" (1/3) ... [2024-11-09 06:47:40,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfd0a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:47:40, skipping insertion in model container [2024-11-09 06:47:40,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:47:36" (2/3) ... [2024-11-09 06:47:40,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfd0a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:47:40, skipping insertion in model container [2024-11-09 06:47:40,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:47:40" (3/3) ... [2024-11-09 06:47:40,741 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2024-11-09 06:47:40,768 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:47:40,768 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:47:40,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:47:40,918 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;@359c431f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:47:40,918 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:47:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2024-11-09 06:47:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 06:47:40,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:47:40,957 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] [2024-11-09 06:47:40,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:47:40,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:47:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1541009717, now seen corresponding path program 1 times [2024-11-09 06:47:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:47:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343484667] [2024-11-09 06:47:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:47:40,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:47:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:47:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:47:42,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:47:42,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343484667] [2024-11-09 06:47:42,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343484667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:47:42,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:47:42,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:47:42,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530366698] [2024-11-09 06:47:42,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:47:42,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:47:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:47:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:47:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:47:42,657 INFO L87 Difference]: Start difference. First operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-09 06:47:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:47:46,458 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2024-11-09 06:47:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:47:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2024-11-09 06:47:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:47:46,510 INFO L225 Difference]: With dead ends: 1260 [2024-11-09 06:47:46,510 INFO L226 Difference]: Without dead ends: 887 [2024-11-09 06:47:46,523 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 [2024-11-09 06:47:46,533 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 1241 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:47:46,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1020 Invalid, 1898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 06:47:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-09 06:47:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2024-11-09 06:47:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 561 states have (on average 1.6007130124777185) internal successors, (898), 591 states have internal predecessors, (898), 193 states have call successors, (193), 44 states have call predecessors, (193), 45 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2024-11-09 06:47:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2024-11-09 06:47:46,731 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2024-11-09 06:47:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:47:46,732 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2024-11-09 06:47:46,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-09 06:47:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2024-11-09 06:47:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 06:47:46,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:47:46,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:47:46,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:47:46,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:47:46,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:47:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1992636030, now seen corresponding path program 1 times [2024-11-09 06:47:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:47:46,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239033132] [2024-11-09 06:47:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:47:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:47:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:47:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:47:47,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:47:47,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239033132] [2024-11-09 06:47:47,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239033132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:47:47,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:47:47,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 06:47:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932341] [2024-11-09 06:47:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:47:47,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:47:47,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:47:47,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:47:47,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:47:47,925 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-09 06:47:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:47:54,209 INFO L93 Difference]: Finished difference Result 2770 states and 4495 transitions. [2024-11-09 06:47:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 06:47:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 87 [2024-11-09 06:47:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:47:54,235 INFO L225 Difference]: With dead ends: 2770 [2024-11-09 06:47:54,235 INFO L226 Difference]: Without dead ends: 1993 [2024-11-09 06:47:54,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 06:47:54,245 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 1610 mSDsluCounter, 3586 mSDsCounter, 0 mSdLazyCounter, 6732 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 7808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 6732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:47:54,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 4116 Invalid, 7808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1076 Valid, 6732 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-09 06:47:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2024-11-09 06:47:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1806. [2024-11-09 06:47:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1236 states have (on average 1.564724919093851) internal successors, (1934), 1308 states have internal predecessors, (1934), 474 states have call successors, (474), 83 states have call predecessors, (474), 95 states have return successors, (493), 447 states have call predecessors, (493), 469 states have call successors, (493) [2024-11-09 06:47:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2901 transitions. [2024-11-09 06:47:54,470 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2901 transitions. Word has length 87 [2024-11-09 06:47:54,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:47:54,471 INFO L471 AbstractCegarLoop]: Abstraction has 1806 states and 2901 transitions. [2024-11-09 06:47:54,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-09 06:47:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2901 transitions. [2024-11-09 06:47:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 06:47:54,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:47:54,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:47:54,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:47:54,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:47:54,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:47:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1020501192, now seen corresponding path program 1 times [2024-11-09 06:47:54,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:47:54,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266983819] [2024-11-09 06:47:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:47:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:47:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:47:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:47:55,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:47:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266983819] [2024-11-09 06:47:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266983819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:47:55,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:47:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:47:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349515970] [2024-11-09 06:47:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:47:55,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:47:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:47:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:47:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:47:55,307 INFO L87 Difference]: Start difference. First operand 1806 states and 2901 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-09 06:48:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:00,130 INFO L93 Difference]: Finished difference Result 5061 states and 8162 transitions. [2024-11-09 06:48:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 06:48:00,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 89 [2024-11-09 06:48:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:00,160 INFO L225 Difference]: With dead ends: 5061 [2024-11-09 06:48:00,160 INFO L226 Difference]: Without dead ends: 3280 [2024-11-09 06:48:00,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:48:00,175 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 1497 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 3887 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:00,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 2560 Invalid, 4419 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [532 Valid, 3887 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 06:48:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2024-11-09 06:48:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3118. [2024-11-09 06:48:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 2210 states have (on average 1.5886877828054298) internal successors, (3511), 2301 states have internal predecessors, (3511), 732 states have call successors, (732), 145 states have call predecessors, (732), 175 states have return successors, (795), 715 states have call predecessors, (795), 727 states have call successors, (795) [2024-11-09 06:48:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 5038 transitions. [2024-11-09 06:48:00,464 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 5038 transitions. Word has length 89 [2024-11-09 06:48:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:00,465 INFO L471 AbstractCegarLoop]: Abstraction has 3118 states and 5038 transitions. [2024-11-09 06:48:00,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-09 06:48:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 5038 transitions. [2024-11-09 06:48:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 06:48:00,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:00,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:00,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:48:00,473 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:00,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1138450759, now seen corresponding path program 1 times [2024-11-09 06:48:00,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:00,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824498035] [2024-11-09 06:48:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:48:00,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:00,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824498035] [2024-11-09 06:48:00,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824498035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:00,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:00,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:48:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915453305] [2024-11-09 06:48:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:00,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:48:00,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:00,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:48:00,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:00,963 INFO L87 Difference]: Start difference. First operand 3118 states and 5038 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:48:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:01,377 INFO L93 Difference]: Finished difference Result 5553 states and 8992 transitions. [2024-11-09 06:48:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:48:01,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2024-11-09 06:48:01,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:01,408 INFO L225 Difference]: With dead ends: 5553 [2024-11-09 06:48:01,408 INFO L226 Difference]: Without dead ends: 3218 [2024-11-09 06:48:01,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:01,428 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:01,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3397 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:48:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2024-11-09 06:48:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3188. [2024-11-09 06:48:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 2260 states have (on average 1.5756637168141594) internal successors, (3561), 2351 states have internal predecessors, (3561), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 735 states have call predecessors, (845), 727 states have call successors, (845) [2024-11-09 06:48:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5138 transitions. [2024-11-09 06:48:01,748 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5138 transitions. Word has length 94 [2024-11-09 06:48:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:01,751 INFO L471 AbstractCegarLoop]: Abstraction has 3188 states and 5138 transitions. [2024-11-09 06:48:01,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:48:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5138 transitions. [2024-11-09 06:48:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 06:48:01,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:01,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:01,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:48:01,759 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:01,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1020037991, now seen corresponding path program 1 times [2024-11-09 06:48:01,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:01,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854428563] [2024-11-09 06:48:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:48:02,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854428563] [2024-11-09 06:48:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854428563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:48:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268828178] [2024-11-09 06:48:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:02,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:48:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:48:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:02,276 INFO L87 Difference]: Start difference. First operand 3188 states and 5138 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:48:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:02,860 INFO L93 Difference]: Finished difference Result 5659 states and 9132 transitions. [2024-11-09 06:48:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:48:02,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2024-11-09 06:48:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:02,892 INFO L225 Difference]: With dead ends: 5659 [2024-11-09 06:48:02,893 INFO L226 Difference]: Without dead ends: 3268 [2024-11-09 06:48:02,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:02,911 INFO L432 NwaCegarLoop]: 568 mSDtfsCounter, 0 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:02,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3384 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:48:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2024-11-09 06:48:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3198. [2024-11-09 06:48:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2270 states have (on average 1.5731277533039647) internal successors, (3571), 2351 states have internal predecessors, (3571), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 745 states have call predecessors, (845), 727 states have call successors, (845) [2024-11-09 06:48:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 5148 transitions. [2024-11-09 06:48:03,226 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 5148 transitions. Word has length 94 [2024-11-09 06:48:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:03,227 INFO L471 AbstractCegarLoop]: Abstraction has 3198 states and 5148 transitions. [2024-11-09 06:48:03,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:48:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 5148 transitions. [2024-11-09 06:48:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 06:48:03,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:03,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:03,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:48:03,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:03,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:03,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1575927398, now seen corresponding path program 1 times [2024-11-09 06:48:03,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:03,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579656123] [2024-11-09 06:48:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:03,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:48:03,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:03,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579656123] [2024-11-09 06:48:03,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579656123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:03,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:03,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:48:03,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062011673] [2024-11-09 06:48:03,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:03,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:48:03,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:48:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:03,779 INFO L87 Difference]: Start difference. First operand 3198 states and 5148 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:48:04,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:04,398 INFO L93 Difference]: Finished difference Result 5677 states and 9150 transitions. [2024-11-09 06:48:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:48:04,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2024-11-09 06:48:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:04,440 INFO L225 Difference]: With dead ends: 5677 [2024-11-09 06:48:04,440 INFO L226 Difference]: Without dead ends: 3278 [2024-11-09 06:48:04,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:04,461 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 0 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:04,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3403 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:48:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2024-11-09 06:48:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 3208. [2024-11-09 06:48:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 2280 states have (on average 1.5706140350877194) internal successors, (3581), 2351 states have internal predecessors, (3581), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 755 states have call predecessors, (845), 727 states have call successors, (845) [2024-11-09 06:48:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5158 transitions. [2024-11-09 06:48:04,897 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5158 transitions. Word has length 93 [2024-11-09 06:48:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:04,898 INFO L471 AbstractCegarLoop]: Abstraction has 3208 states and 5158 transitions. [2024-11-09 06:48:04,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:48:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5158 transitions. [2024-11-09 06:48:04,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 06:48:04,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:04,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:04,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:48:04,905 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:04,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1047872626, now seen corresponding path program 1 times [2024-11-09 06:48:04,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:04,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50587536] [2024-11-09 06:48:04,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:04,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:48:05,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:05,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50587536] [2024-11-09 06:48:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50587536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:05,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:48:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147173010] [2024-11-09 06:48:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:05,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:48:05,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:48:05,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:48:05,621 INFO L87 Difference]: Start difference. First operand 3208 states and 5158 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-09 06:48:09,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:09,245 INFO L93 Difference]: Finished difference Result 8008 states and 12960 transitions. [2024-11-09 06:48:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:48:09,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 97 [2024-11-09 06:48:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:09,303 INFO L225 Difference]: With dead ends: 8008 [2024-11-09 06:48:09,303 INFO L226 Difference]: Without dead ends: 5359 [2024-11-09 06:48:09,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:48:09,330 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 1773 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:09,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1938 Valid, 1464 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 06:48:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2024-11-09 06:48:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5220. [2024-11-09 06:48:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 3635 states have (on average 1.5323246217331499) internal successors, (5570), 3776 states have internal predecessors, (5570), 1246 states have call successors, (1246), 258 states have call predecessors, (1246), 338 states have return successors, (1466), 1262 states have call predecessors, (1466), 1241 states have call successors, (1466) [2024-11-09 06:48:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 8282 transitions. [2024-11-09 06:48:10,093 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 8282 transitions. Word has length 97 [2024-11-09 06:48:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:10,093 INFO L471 AbstractCegarLoop]: Abstraction has 5220 states and 8282 transitions. [2024-11-09 06:48:10,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-09 06:48:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 8282 transitions. [2024-11-09 06:48:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 06:48:10,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:10,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:10,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:48:10,099 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:10,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash -503870006, now seen corresponding path program 1 times [2024-11-09 06:48:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:10,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269435529] [2024-11-09 06:48:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:48:10,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269435529] [2024-11-09 06:48:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269435529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:10,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:10,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:48:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628147468] [2024-11-09 06:48:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:10,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:48:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:48:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:48:10,625 INFO L87 Difference]: Start difference. First operand 5220 states and 8282 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-09 06:48:15,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:15,485 INFO L93 Difference]: Finished difference Result 16916 states and 27514 transitions. [2024-11-09 06:48:15,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:48:15,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 101 [2024-11-09 06:48:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:15,618 INFO L225 Difference]: With dead ends: 16916 [2024-11-09 06:48:15,619 INFO L226 Difference]: Without dead ends: 11721 [2024-11-09 06:48:15,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:48:15,674 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 2194 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:15,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 1497 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 06:48:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11721 states. [2024-11-09 06:48:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11721 to 10494. [2024-11-09 06:48:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10494 states, 7285 states have (on average 1.526149622512011) internal successors, (11118), 7611 states have internal predecessors, (11118), 2519 states have call successors, (2519), 524 states have call predecessors, (2519), 689 states have return successors, (3181), 2554 states have call predecessors, (3181), 2514 states have call successors, (3181) [2024-11-09 06:48:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10494 states to 10494 states and 16818 transitions. [2024-11-09 06:48:17,615 INFO L78 Accepts]: Start accepts. Automaton has 10494 states and 16818 transitions. Word has length 101 [2024-11-09 06:48:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:17,617 INFO L471 AbstractCegarLoop]: Abstraction has 10494 states and 16818 transitions. [2024-11-09 06:48:17,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-09 06:48:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 10494 states and 16818 transitions. [2024-11-09 06:48:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 06:48:17,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:17,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:17,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:48:17,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:17,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1368718678, now seen corresponding path program 1 times [2024-11-09 06:48:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:17,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004240645] [2024-11-09 06:48:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:48:18,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:18,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004240645] [2024-11-09 06:48:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004240645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:18,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:18,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:48:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135355884] [2024-11-09 06:48:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:18,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:48:18,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:18,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:48:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:48:18,389 INFO L87 Difference]: Start difference. First operand 10494 states and 16818 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 06:48:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:22,488 INFO L93 Difference]: Finished difference Result 20769 states and 33458 transitions. [2024-11-09 06:48:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:48:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 102 [2024-11-09 06:48:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:22,586 INFO L225 Difference]: With dead ends: 20769 [2024-11-09 06:48:22,586 INFO L226 Difference]: Without dead ends: 11706 [2024-11-09 06:48:22,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:48:22,639 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 1010 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:22,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 1670 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 06:48:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2024-11-09 06:48:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 10728. [2024-11-09 06:48:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10728 states, 7447 states have (on average 1.5222237142473478) internal successors, (11336), 7801 states have internal predecessors, (11336), 2533 states have call successors, (2533), 556 states have call predecessors, (2533), 747 states have return successors, (3269), 2566 states have call predecessors, (3269), 2528 states have call successors, (3269) [2024-11-09 06:48:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10728 states to 10728 states and 17138 transitions. [2024-11-09 06:48:24,497 INFO L78 Accepts]: Start accepts. Automaton has 10728 states and 17138 transitions. Word has length 102 [2024-11-09 06:48:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:24,499 INFO L471 AbstractCegarLoop]: Abstraction has 10728 states and 17138 transitions. [2024-11-09 06:48:24,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 06:48:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10728 states and 17138 transitions. [2024-11-09 06:48:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 06:48:24,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:24,504 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:24,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 06:48:24,505 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:24,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -168872330, now seen corresponding path program 1 times [2024-11-09 06:48:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:24,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393709354] [2024-11-09 06:48:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:24,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:48:25,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393709354] [2024-11-09 06:48:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393709354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:25,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:25,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:48:25,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579450830] [2024-11-09 06:48:25,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:25,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:48:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:25,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:48:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:48:25,014 INFO L87 Difference]: Start difference. First operand 10728 states and 17138 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-09 06:48:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:27,097 INFO L93 Difference]: Finished difference Result 10854 states and 17347 transitions. [2024-11-09 06:48:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:48:27,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2024-11-09 06:48:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:27,229 INFO L225 Difference]: With dead ends: 10854 [2024-11-09 06:48:27,229 INFO L226 Difference]: Without dead ends: 10839 [2024-11-09 06:48:27,241 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 [2024-11-09 06:48:27,242 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 669 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:27,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1865 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:48:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2024-11-09 06:48:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 10736. [2024-11-09 06:48:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10736 states, 7455 states have (on average 1.521663313212609) internal successors, (11344), 7809 states have internal predecessors, (11344), 2533 states have call successors, (2533), 556 states have call predecessors, (2533), 747 states have return successors, (3269), 2566 states have call predecessors, (3269), 2528 states have call successors, (3269) [2024-11-09 06:48:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 17146 transitions. [2024-11-09 06:48:29,073 INFO L78 Accepts]: Start accepts. Automaton has 10736 states and 17146 transitions. Word has length 106 [2024-11-09 06:48:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:29,074 INFO L471 AbstractCegarLoop]: Abstraction has 10736 states and 17146 transitions. [2024-11-09 06:48:29,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-09 06:48:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 10736 states and 17146 transitions. [2024-11-09 06:48:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:48:29,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:29,079 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:29,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:48:29,080 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:29,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash 872838238, now seen corresponding path program 1 times [2024-11-09 06:48:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:29,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992580548] [2024-11-09 06:48:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:48:29,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:29,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992580548] [2024-11-09 06:48:29,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992580548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:29,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 06:48:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163430729] [2024-11-09 06:48:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:29,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:48:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:48:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:48:29,900 INFO L87 Difference]: Start difference. First operand 10736 states and 17146 transitions. Second operand has 13 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 06:48:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:38,287 INFO L93 Difference]: Finished difference Result 11828 states and 18852 transitions. [2024-11-09 06:48:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 06:48:38,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 111 [2024-11-09 06:48:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:38,383 INFO L225 Difference]: With dead ends: 11828 [2024-11-09 06:48:38,384 INFO L226 Difference]: Without dead ends: 11811 [2024-11-09 06:48:38,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 06:48:38,395 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 2487 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 7012 mSolverCounterSat, 1403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 8415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 7012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:38,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 4030 Invalid, 8415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1403 Valid, 7012 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-09 06:48:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11811 states. [2024-11-09 06:48:39,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11811 to 11344. [2024-11-09 06:48:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11344 states, 7934 states have (on average 1.529493319889085) internal successors, (12135), 8284 states have internal predecessors, (12135), 2574 states have call successors, (2574), 645 states have call predecessors, (2574), 835 states have return successors, (3321), 2610 states have call predecessors, (3321), 2569 states have call successors, (3321) [2024-11-09 06:48:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11344 states to 11344 states and 18030 transitions. [2024-11-09 06:48:39,545 INFO L78 Accepts]: Start accepts. Automaton has 11344 states and 18030 transitions. Word has length 111 [2024-11-09 06:48:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:39,546 INFO L471 AbstractCegarLoop]: Abstraction has 11344 states and 18030 transitions. [2024-11-09 06:48:39,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 06:48:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 11344 states and 18030 transitions. [2024-11-09 06:48:39,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 06:48:39,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:39,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:39,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 06:48:39,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:39,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1116317175, now seen corresponding path program 1 times [2024-11-09 06:48:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402359037] [2024-11-09 06:48:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:48:40,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402359037] [2024-11-09 06:48:40,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402359037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:40,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:40,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:48:40,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71566991] [2024-11-09 06:48:40,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:40,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:48:40,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:48:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:48:40,517 INFO L87 Difference]: Start difference. First operand 11344 states and 18030 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-09 06:48:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:46,240 INFO L93 Difference]: Finished difference Result 32541 states and 52471 transitions. [2024-11-09 06:48:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:48:46,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 119 [2024-11-09 06:48:46,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:46,410 INFO L225 Difference]: With dead ends: 32541 [2024-11-09 06:48:46,411 INFO L226 Difference]: Without dead ends: 21224 [2024-11-09 06:48:46,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:48:46,474 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 2767 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 3219 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2877 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 4236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 3219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:46,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2877 Valid, 1466 Invalid, 4236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1017 Valid, 3219 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 06:48:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21224 states. [2024-11-09 06:48:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21224 to 18602. [2024-11-09 06:48:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18602 states, 12761 states have (on average 1.5374186975942323) internal successors, (19619), 13516 states have internal predecessors, (19619), 4517 states have call successors, (4517), 1006 states have call predecessors, (4517), 1323 states have return successors, (5789), 4387 states have call predecessors, (5789), 4512 states have call successors, (5789) [2024-11-09 06:48:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18602 states to 18602 states and 29925 transitions. [2024-11-09 06:48:48,698 INFO L78 Accepts]: Start accepts. Automaton has 18602 states and 29925 transitions. Word has length 119 [2024-11-09 06:48:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:48,698 INFO L471 AbstractCegarLoop]: Abstraction has 18602 states and 29925 transitions. [2024-11-09 06:48:48,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-09 06:48:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 18602 states and 29925 transitions. [2024-11-09 06:48:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:48:48,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:48,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:48,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:48:48,708 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:48,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:48,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1729546947, now seen corresponding path program 1 times [2024-11-09 06:48:48,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:48,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307028137] [2024-11-09 06:48:48,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:48:48,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:48,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307028137] [2024-11-09 06:48:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307028137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:48,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:48:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:48:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808757623] [2024-11-09 06:48:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:48,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:48:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:48:48,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:48:48,964 INFO L87 Difference]: Start difference. First operand 18602 states and 29925 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-09 06:48:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:51,361 INFO L93 Difference]: Finished difference Result 37661 states and 62702 transitions. [2024-11-09 06:48:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:48:51,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 121 [2024-11-09 06:48:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:51,532 INFO L225 Difference]: With dead ends: 37661 [2024-11-09 06:48:51,532 INFO L226 Difference]: Without dead ends: 20912 [2024-11-09 06:48:51,792 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 [2024-11-09 06:48:51,793 INFO L432 NwaCegarLoop]: 612 mSDtfsCounter, 207 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:51,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1548 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:48:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20912 states. [2024-11-09 06:48:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20912 to 20612. [2024-11-09 06:48:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20612 states, 14650 states have (on average 1.5449146757679182) internal successors, (22633), 15526 states have internal predecessors, (22633), 4517 states have call successors, (4517), 1006 states have call predecessors, (4517), 1444 states have return successors, (6269), 4387 states have call predecessors, (6269), 4512 states have call successors, (6269) [2024-11-09 06:48:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20612 states to 20612 states and 33419 transitions. [2024-11-09 06:48:53,802 INFO L78 Accepts]: Start accepts. Automaton has 20612 states and 33419 transitions. Word has length 121 [2024-11-09 06:48:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:48:53,802 INFO L471 AbstractCegarLoop]: Abstraction has 20612 states and 33419 transitions. [2024-11-09 06:48:53,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-09 06:48:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 20612 states and 33419 transitions. [2024-11-09 06:48:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:48:53,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:48:53,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:48:53,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 06:48:53,810 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:48:53,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:48:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1440189509, now seen corresponding path program 1 times [2024-11-09 06:48:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:48:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635375228] [2024-11-09 06:48:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:48:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:48:57,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:48:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635375228] [2024-11-09 06:48:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635375228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:48:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211411242] [2024-11-09 06:48:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:48:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:48:57,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:48:57,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:48:57,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:48:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:48:57,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:48:57,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:48:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:48:57,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:48:57,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211411242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:48:57,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:48:57,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2024-11-09 06:48:57,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982591386] [2024-11-09 06:48:57,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:48:57,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:48:57,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:48:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:48:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:48:57,736 INFO L87 Difference]: Start difference. First operand 20612 states and 33419 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-09 06:48:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:48:59,665 INFO L93 Difference]: Finished difference Result 20649 states and 33470 transitions. [2024-11-09 06:48:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:48:59,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 121 [2024-11-09 06:48:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:48:59,816 INFO L225 Difference]: With dead ends: 20649 [2024-11-09 06:48:59,816 INFO L226 Difference]: Without dead ends: 20634 [2024-11-09 06:48:59,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:48:59,839 INFO L432 NwaCegarLoop]: 569 mSDtfsCounter, 0 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:48:59,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1697 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:48:59,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20634 states. [2024-11-09 06:49:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20634 to 20634. [2024-11-09 06:49:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20634 states, 14672 states have (on average 1.5433478735005453) internal successors, (22644), 15548 states have internal predecessors, (22644), 4517 states have call successors, (4517), 1006 states have call predecessors, (4517), 1444 states have return successors, (6269), 4387 states have call predecessors, (6269), 4512 states have call successors, (6269) [2024-11-09 06:49:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20634 states to 20634 states and 33430 transitions. [2024-11-09 06:49:01,841 INFO L78 Accepts]: Start accepts. Automaton has 20634 states and 33430 transitions. Word has length 121 [2024-11-09 06:49:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:01,842 INFO L471 AbstractCegarLoop]: Abstraction has 20634 states and 33430 transitions. [2024-11-09 06:49:01,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-09 06:49:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 20634 states and 33430 transitions. [2024-11-09 06:49:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-09 06:49:01,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:01,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:01,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:49:02,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:02,050 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:49:02,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1186790029, now seen corresponding path program 1 times [2024-11-09 06:49:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:49:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889764582] [2024-11-09 06:49:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:02,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:49:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 06:49:05,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:49:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889764582] [2024-11-09 06:49:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889764582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:49:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002757964] [2024-11-09 06:49:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:05,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:49:05,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:49:05,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:49:05,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16299c16-1623-4e94-841f-2e1bb590018d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:49:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:05,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:49:05,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 06:49:07,016 INFO L311 TraceCheckSpWp]: Computing backward predicates...