./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.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_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/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_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/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_6effdafc-eb41-4a09-98be-bf358b01e89d/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 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:06:06,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:06:06,567 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:06:06,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:06:06,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:06:06,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:06:06,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:06:06,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:06:06,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:06:06,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:06:06,626 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:06:06,627 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:06:06,627 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:06:06,628 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:06:06,628 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:06:06,630 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:06:06,631 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:06:06,631 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:06:06,631 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:06:06,632 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:06:06,632 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:06:06,633 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:06:06,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:06:06,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:06:06,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:06:06,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:06:06,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:06:06,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:06:06,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:06:06,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:06:06,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:06:06,637 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:06:06,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:06:06,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:06:06,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:06:06,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:06:06,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:06:06,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:06:06,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:06:06,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:06:06,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:06:06,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:06:06,641 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:06:06,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:06:06,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:06:06,642 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:06:06,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:06:06,643 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_6effdafc-eb41-4a09-98be-bf358b01e89d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f [2024-11-09 05:06:06,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:06:06,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:06:06,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:06:06,987 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:06:06,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:06:06,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c Unable to find full path for "g++" [2024-11-09 05:06:09,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:06:10,035 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:06:10,035 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c [2024-11-09 05:06:10,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/data/310d1d9d1/2aca96dd4fd64085a855c021a7b05db1/FLAG34aa68abf [2024-11-09 05:06:10,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/data/310d1d9d1/2aca96dd4fd64085a855c021a7b05db1 [2024-11-09 05:06:10,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:06:10,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:06:10,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:06:10,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:06:10,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:06:10,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:06:10" (1/1) ... [2024-11-09 05:06:10,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5c4a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:10, skipping insertion in model container [2024-11-09 05:06:10,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:06:10" (1/1) ... [2024-11-09 05:06:10,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:06:11,050 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_6effdafc-eb41-4a09-98be-bf358b01e89d/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2024-11-09 05:06:11,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:06:11,091 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:06:11,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-09 05:06:11,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2024-11-09 05:06:11,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [516] [2024-11-09 05:06:11,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [873] [2024-11-09 05:06:11,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2432] [2024-11-09 05:06:11,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3093] [2024-11-09 05:06:11,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2024-11-09 05:06:11,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [3114] [2024-11-09 05:06:11,109 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3273] [2024-11-09 05:06:11,109 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3308] [2024-11-09 05:06:11,331 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_6effdafc-eb41-4a09-98be-bf358b01e89d/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2024-11-09 05:06:11,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:06:11,398 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:06:11,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11 WrapperNode [2024-11-09 05:06:11,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:06:11,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:06:11,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:06:11,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:06:11,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,565 INFO L138 Inliner]: procedures = 95, calls = 339, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1120 [2024-11-09 05:06:11,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:06:11,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:06:11,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:06:11,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:06:11,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:06:11,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:06:11,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:06:11,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:06:11,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (1/1) ... [2024-11-09 05:06:11,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:06:11,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:11,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:06:11,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:06:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:06:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-09 05:06:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-09 05:06:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-09 05:06:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-09 05:06:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 05:06:11,836 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 05:06:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-09 05:06:11,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-09 05:06:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 05:06:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 05:06:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 05:06:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 05:06:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:06:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:06:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:06:11,839 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:06:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-09 05:06:11,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-09 05:06:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 05:06:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 05:06:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 05:06:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 05:06:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 05:06:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 05:06:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 05:06:11,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 05:06:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 05:06:11,841 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 05:06:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-09 05:06:11,841 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-09 05:06:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 05:06:11,842 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 05:06:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 05:06:11,842 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 05:06:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 05:06:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 05:06:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 05:06:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 05:06:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2024-11-09 05:06:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2024-11-09 05:06:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:06:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 05:06:11,844 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 05:06:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 05:06:11,844 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 05:06:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 05:06:11,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 05:06:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:06:11,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:06:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 05:06:11,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 05:06:12,037 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:06:12,040 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:06:14,067 INFO L? ?]: Removed 455 outVars from TransFormulas that were not future-live. [2024-11-09 05:06:14,067 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:06:15,506 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:06:15,507 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:06:15,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:06:15 BoogieIcfgContainer [2024-11-09 05:06:15,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:06:15,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:06:15,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:06:15,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:06:15,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:06:10" (1/3) ... [2024-11-09 05:06:15,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bb2c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:06:15, skipping insertion in model container [2024-11-09 05:06:15,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:11" (2/3) ... [2024-11-09 05:06:15,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bb2c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:06:15, skipping insertion in model container [2024-11-09 05:06:15,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:06:15" (3/3) ... [2024-11-09 05:06:15,528 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2024-11-09 05:06:15,557 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:06:15,557 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:06:15,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:06:15,696 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;@17de4ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:06:15,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:06:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 246 states have (on average 1.5934959349593496) internal successors, (392), 267 states have internal predecessors, (392), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-09 05:06:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 05:06:15,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:15,750 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:15,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:15,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash 86309189, now seen corresponding path program 1 times [2024-11-09 05:06:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162076785] [2024-11-09 05:06:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:16,472 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 05:06:16,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:16,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162076785] [2024-11-09 05:06:16,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162076785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:06:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922902403] [2024-11-09 05:06:16,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:16,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:06:16,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:06:16,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:06:16,527 INFO L87 Difference]: Start difference. First operand has 365 states, 246 states have (on average 1.5934959349593496) internal successors, (392), 267 states have internal predecessors, (392), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:06:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:16,748 INFO L93 Difference]: Finished difference Result 383 states and 605 transitions. [2024-11-09 05:06:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:06:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 77 [2024-11-09 05:06:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:16,770 INFO L225 Difference]: With dead ends: 383 [2024-11-09 05:06:16,770 INFO L226 Difference]: Without dead ends: 361 [2024-11-09 05:06:16,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:06:16,778 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:16,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:06:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-09 05:06:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-09 05:06:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 263 states have internal predecessors, (386), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-09 05:06:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 567 transitions. [2024-11-09 05:06:16,882 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 567 transitions. Word has length 77 [2024-11-09 05:06:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:16,888 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 567 transitions. [2024-11-09 05:06:16,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:06:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 567 transitions. [2024-11-09 05:06:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 05:06:16,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:16,900 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:16,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:06:16,901 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:16,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash 165940586, now seen corresponding path program 1 times [2024-11-09 05:06:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:16,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731955066] [2024-11-09 05:06:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:17,684 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 05:06:17,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731955066] [2024-11-09 05:06:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731955066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:17,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:06:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833327824] [2024-11-09 05:06:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:17,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:06:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:17,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:06:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:06:17,693 INFO L87 Difference]: Start difference. First operand 361 states and 567 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 05:06:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:20,655 INFO L93 Difference]: Finished difference Result 1092 states and 1742 transitions. [2024-11-09 05:06:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:06:20,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 78 [2024-11-09 05:06:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:20,670 INFO L225 Difference]: With dead ends: 1092 [2024-11-09 05:06:20,670 INFO L226 Difference]: Without dead ends: 747 [2024-11-09 05:06:20,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:06:20,677 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 1110 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:20,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1367 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 05:06:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-09 05:06:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 709. [2024-11-09 05:06:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 488 states have (on average 1.5942622950819672) internal successors, (778), 521 states have internal predecessors, (778), 176 states have call successors, (176), 44 states have call predecessors, (176), 44 states have return successors, (177), 168 states have call predecessors, (177), 171 states have call successors, (177) [2024-11-09 05:06:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1131 transitions. [2024-11-09 05:06:20,805 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1131 transitions. Word has length 78 [2024-11-09 05:06:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:20,810 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1131 transitions. [2024-11-09 05:06:20,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 05:06:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1131 transitions. [2024-11-09 05:06:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 05:06:20,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:20,814 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:20,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:06:20,814 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:20,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash 350121158, now seen corresponding path program 1 times [2024-11-09 05:06:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:20,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163895453] [2024-11-09 05:06:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:21,250 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 05:06:21,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:21,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163895453] [2024-11-09 05:06:21,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163895453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:21,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:21,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:06:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758409917] [2024-11-09 05:06:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:21,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:06:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:06:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:06:21,254 INFO L87 Difference]: Start difference. First operand 709 states and 1131 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:06:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:21,856 INFO L93 Difference]: Finished difference Result 780 states and 1243 transitions. [2024-11-09 05:06:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:06:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2024-11-09 05:06:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:21,864 INFO L225 Difference]: With dead ends: 780 [2024-11-09 05:06:21,865 INFO L226 Difference]: Without dead ends: 765 [2024-11-09 05:06:21,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:06:21,867 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 631 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:21,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1421 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:06:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-09 05:06:21,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 713. [2024-11-09 05:06:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 492 states have (on average 1.589430894308943) internal successors, (782), 525 states have internal predecessors, (782), 176 states have call successors, (176), 44 states have call predecessors, (176), 44 states have return successors, (177), 168 states have call predecessors, (177), 171 states have call successors, (177) [2024-11-09 05:06:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1135 transitions. [2024-11-09 05:06:21,928 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1135 transitions. Word has length 82 [2024-11-09 05:06:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:21,929 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1135 transitions. [2024-11-09 05:06:21,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:06:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1135 transitions. [2024-11-09 05:06:21,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 05:06:21,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:21,933 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:21,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:06:21,933 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:21,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash -121304571, now seen corresponding path program 1 times [2024-11-09 05:06:21,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:21,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548504342] [2024-11-09 05:06:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:22,274 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 05:06:22,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:22,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548504342] [2024-11-09 05:06:22,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548504342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:22,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:06:22,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857729917] [2024-11-09 05:06:22,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:22,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:06:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:06:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:06:22,278 INFO L87 Difference]: Start difference. First operand 713 states and 1135 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-09 05:06:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:22,523 INFO L93 Difference]: Finished difference Result 728 states and 1153 transitions. [2024-11-09 05:06:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:06:22,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 87 [2024-11-09 05:06:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:22,532 INFO L225 Difference]: With dead ends: 728 [2024-11-09 05:06:22,532 INFO L226 Difference]: Without dead ends: 713 [2024-11-09 05:06:22,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:06:22,535 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:22,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2114 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:06:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-09 05:06:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-09 05:06:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 492 states have (on average 1.5853658536585367) internal successors, (780), 525 states have internal predecessors, (780), 176 states have call successors, (176), 44 states have call predecessors, (176), 44 states have return successors, (177), 168 states have call predecessors, (177), 171 states have call successors, (177) [2024-11-09 05:06:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1133 transitions. [2024-11-09 05:06:22,603 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1133 transitions. Word has length 87 [2024-11-09 05:06:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:22,604 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1133 transitions. [2024-11-09 05:06:22,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-09 05:06:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1133 transitions. [2024-11-09 05:06:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 05:06:22,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:22,607 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:22,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:06:22,608 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:22,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1965425463, now seen corresponding path program 1 times [2024-11-09 05:06:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:22,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124968047] [2024-11-09 05:06:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:06:22,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:22,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124968047] [2024-11-09 05:06:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124968047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:22,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:22,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:06:22,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134426031] [2024-11-09 05:06:22,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:22,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:06:22,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:22,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:06:22,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:22,832 INFO L87 Difference]: Start difference. First operand 713 states and 1133 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:23,107 INFO L93 Difference]: Finished difference Result 2073 states and 3329 transitions. [2024-11-09 05:06:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:06:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2024-11-09 05:06:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:23,119 INFO L225 Difference]: With dead ends: 2073 [2024-11-09 05:06:23,119 INFO L226 Difference]: Without dead ends: 1376 [2024-11-09 05:06:23,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:23,126 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 522 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:23,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1096 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:06:23,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-09 05:06:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1348. [2024-11-09 05:06:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 950 states have (on average 1.5989473684210527) internal successors, (1519), 1012 states have internal predecessors, (1519), 316 states have call successors, (316), 79 states have call predecessors, (316), 81 states have return successors, (330), 294 states have call predecessors, (330), 311 states have call successors, (330) [2024-11-09 05:06:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2165 transitions. [2024-11-09 05:06:23,248 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2165 transitions. Word has length 94 [2024-11-09 05:06:23,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:23,249 INFO L471 AbstractCegarLoop]: Abstraction has 1348 states and 2165 transitions. [2024-11-09 05:06:23,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2165 transitions. [2024-11-09 05:06:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 05:06:23,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:23,252 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:23,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:06:23,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:23,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash -798778130, now seen corresponding path program 1 times [2024-11-09 05:06:23,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:23,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191978273] [2024-11-09 05:06:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:23,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:06:23,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191978273] [2024-11-09 05:06:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191978273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:23,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:23,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:06:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273312514] [2024-11-09 05:06:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:23,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:06:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:06:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:23,402 INFO L87 Difference]: Start difference. First operand 1348 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:23,744 INFO L93 Difference]: Finished difference Result 3977 states and 6448 transitions. [2024-11-09 05:06:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:06:23,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 95 [2024-11-09 05:06:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:23,772 INFO L225 Difference]: With dead ends: 3977 [2024-11-09 05:06:23,773 INFO L226 Difference]: Without dead ends: 2648 [2024-11-09 05:06:23,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:23,783 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 521 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:23,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1103 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:06:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2024-11-09 05:06:24,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2619. [2024-11-09 05:06:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1867 states have (on average 1.604713444027852) internal successors, (2996), 1987 states have internal predecessors, (2996), 596 states have call successors, (596), 149 states have call predecessors, (596), 155 states have return successors, (652), 546 states have call predecessors, (652), 591 states have call successors, (652) [2024-11-09 05:06:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4244 transitions. [2024-11-09 05:06:24,053 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4244 transitions. Word has length 95 [2024-11-09 05:06:24,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:24,055 INFO L471 AbstractCegarLoop]: Abstraction has 2619 states and 4244 transitions. [2024-11-09 05:06:24,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:24,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4244 transitions. [2024-11-09 05:06:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 05:06:24,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:24,059 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:24,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:06:24,060 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:24,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:24,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1007554731, now seen corresponding path program 1 times [2024-11-09 05:06:24,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:24,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239100035] [2024-11-09 05:06:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:24,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:06:24,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239100035] [2024-11-09 05:06:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239100035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:24,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:24,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:06:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861631873] [2024-11-09 05:06:24,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:24,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:06:24,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:06:24,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:24,232 INFO L87 Difference]: Start difference. First operand 2619 states and 4244 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:24,796 INFO L93 Difference]: Finished difference Result 7786 states and 12764 transitions. [2024-11-09 05:06:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:06:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 96 [2024-11-09 05:06:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:24,850 INFO L225 Difference]: With dead ends: 7786 [2024-11-09 05:06:24,850 INFO L226 Difference]: Without dead ends: 5192 [2024-11-09 05:06:24,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:24,866 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 520 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:24,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1109 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:06:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5192 states. [2024-11-09 05:06:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5192 to 5162. [2024-11-09 05:06:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5162 states, 3702 states have (on average 1.606158833063209) internal successors, (5946), 3938 states have internal predecessors, (5946), 1156 states have call successors, (1156), 289 states have call predecessors, (1156), 303 states have return successors, (1356), 1050 states have call predecessors, (1356), 1151 states have call successors, (1356) [2024-11-09 05:06:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 8458 transitions. [2024-11-09 05:06:25,460 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 8458 transitions. Word has length 96 [2024-11-09 05:06:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:25,461 INFO L471 AbstractCegarLoop]: Abstraction has 5162 states and 8458 transitions. [2024-11-09 05:06:25,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 8458 transitions. [2024-11-09 05:06:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 05:06:25,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:25,466 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:25,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:06:25,466 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:25,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1169302480, now seen corresponding path program 1 times [2024-11-09 05:06:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:25,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158228148] [2024-11-09 05:06:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:25,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:06:25,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:25,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158228148] [2024-11-09 05:06:25,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158228148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:25,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:25,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:06:25,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395267356] [2024-11-09 05:06:25,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:25,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:06:25,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:25,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:06:25,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:25,651 INFO L87 Difference]: Start difference. First operand 5162 states and 8458 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:26,441 INFO L93 Difference]: Finished difference Result 15405 states and 25693 transitions. [2024-11-09 05:06:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:06:26,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 97 [2024-11-09 05:06:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:26,545 INFO L225 Difference]: With dead ends: 15405 [2024-11-09 05:06:26,545 INFO L226 Difference]: Without dead ends: 10280 [2024-11-09 05:06:26,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:26,581 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 519 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:26,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1115 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:06:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2024-11-09 05:06:27,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 10249. [2024-11-09 05:06:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10249 states, 7373 states have (on average 1.605316696053167) internal successors, (11836), 7841 states have internal predecessors, (11836), 2276 states have call successors, (2276), 569 states have call predecessors, (2276), 599 states have return successors, (2992), 2058 states have call predecessors, (2992), 2271 states have call successors, (2992) [2024-11-09 05:06:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10249 states to 10249 states and 17104 transitions. [2024-11-09 05:06:27,647 INFO L78 Accepts]: Start accepts. Automaton has 10249 states and 17104 transitions. Word has length 97 [2024-11-09 05:06:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:27,648 INFO L471 AbstractCegarLoop]: Abstraction has 10249 states and 17104 transitions. [2024-11-09 05:06:27,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 10249 states and 17104 transitions. [2024-11-09 05:06:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 05:06:27,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:27,657 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:27,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:06:27,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:27,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:27,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1888519309, now seen corresponding path program 1 times [2024-11-09 05:06:27,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:27,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150664702] [2024-11-09 05:06:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:06:27,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:27,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150664702] [2024-11-09 05:06:27,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150664702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:27,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:27,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:06:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954546943] [2024-11-09 05:06:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:27,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:06:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:06:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:27,842 INFO L87 Difference]: Start difference. First operand 10249 states and 17104 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:28,918 INFO L93 Difference]: Finished difference Result 10917 states and 18261 transitions. [2024-11-09 05:06:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:06:28,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 98 [2024-11-09 05:06:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:29,030 INFO L225 Difference]: With dead ends: 10917 [2024-11-09 05:06:29,030 INFO L226 Difference]: Without dead ends: 10906 [2024-11-09 05:06:29,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:06:29,040 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 505 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:29,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1113 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:06:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10906 states. [2024-11-09 05:06:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10906 to 10876. [2024-11-09 05:06:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10876 states, 7824 states have (on average 1.6046779141104295) internal successors, (12555), 8321 states have internal predecessors, (12555), 2416 states have call successors, (2416), 604 states have call predecessors, (2416), 635 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-09 05:06:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10876 states to 10876 states and 18205 transitions. [2024-11-09 05:06:30,115 INFO L78 Accepts]: Start accepts. Automaton has 10876 states and 18205 transitions. Word has length 98 [2024-11-09 05:06:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:30,115 INFO L471 AbstractCegarLoop]: Abstraction has 10876 states and 18205 transitions. [2024-11-09 05:06:30,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:06:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 10876 states and 18205 transitions. [2024-11-09 05:06:30,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-09 05:06:30,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:30,123 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:30,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:06:30,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:30,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1317432558, now seen corresponding path program 1 times [2024-11-09 05:06:30,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:30,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266903242] [2024-11-09 05:06:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:30,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 05:06:30,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266903242] [2024-11-09 05:06:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266903242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:30,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:06:30,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:06:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735706892] [2024-11-09 05:06:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:30,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:06:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:06:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:06:30,437 INFO L87 Difference]: Start difference. First operand 10876 states and 18205 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, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-09 05:06:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:31,262 INFO L93 Difference]: Finished difference Result 21803 states and 37072 transitions. [2024-11-09 05:06:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:06:31,263 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, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 147 [2024-11-09 05:06:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:31,347 INFO L225 Difference]: With dead ends: 21803 [2024-11-09 05:06:31,347 INFO L226 Difference]: Without dead ends: 10944 [2024-11-09 05:06:31,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:06:31,403 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:31,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1581 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:06:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10944 states. [2024-11-09 05:06:32,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10944 to 10944. [2024-11-09 05:06:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10944 states, 7892 states have (on average 1.5994678155093767) internal successors, (12623), 8389 states have internal predecessors, (12623), 2416 states have call successors, (2416), 604 states have call predecessors, (2416), 635 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-09 05:06:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10944 states to 10944 states and 18273 transitions. [2024-11-09 05:06:32,459 INFO L78 Accepts]: Start accepts. Automaton has 10944 states and 18273 transitions. Word has length 147 [2024-11-09 05:06:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:32,459 INFO L471 AbstractCegarLoop]: Abstraction has 10944 states and 18273 transitions. [2024-11-09 05:06:32,460 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, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-09 05:06:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10944 states and 18273 transitions. [2024-11-09 05:06:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-09 05:06:32,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:32,471 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:32,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:06:32,472 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 201900022, now seen corresponding path program 1 times [2024-11-09 05:06:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:32,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146963013] [2024-11-09 05:06:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:06:32,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146963013] [2024-11-09 05:06:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146963013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:32,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195814145] [2024-11-09 05:06:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:32,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:32,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:32,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:32,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:06:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:33,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:06:33,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 05:06:33,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:06:33,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195814145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:33,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:06:33,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 05:06:33,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069913515] [2024-11-09 05:06:33,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:33,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:06:33,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:33,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:06:33,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:06:33,660 INFO L87 Difference]: Start difference. First operand 10944 states and 18273 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:34,715 INFO L93 Difference]: Finished difference Result 23401 states and 40098 transitions. [2024-11-09 05:06:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:06:34,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 150 [2024-11-09 05:06:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:34,827 INFO L225 Difference]: With dead ends: 23401 [2024-11-09 05:06:34,827 INFO L226 Difference]: Without dead ends: 12474 [2024-11-09 05:06:34,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:06:34,888 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 144 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:34,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1384 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:06:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12474 states. [2024-11-09 05:06:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12474 to 12270. [2024-11-09 05:06:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12270 states, 9184 states have (on average 1.64470818815331) internal successors, (15105), 9681 states have internal predecessors, (15105), 2416 states have call successors, (2416), 638 states have call predecessors, (2416), 669 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-09 05:06:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12270 states to 12270 states and 20755 transitions. [2024-11-09 05:06:36,143 INFO L78 Accepts]: Start accepts. Automaton has 12270 states and 20755 transitions. Word has length 150 [2024-11-09 05:06:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:36,144 INFO L471 AbstractCegarLoop]: Abstraction has 12270 states and 20755 transitions. [2024-11-09 05:06:36,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12270 states and 20755 transitions. [2024-11-09 05:06:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 05:06:36,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:36,154 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:36,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:06:36,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:06:36,359 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:36,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash -834321494, now seen corresponding path program 1 times [2024-11-09 05:06:36,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:36,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995296392] [2024-11-09 05:06:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:36,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 05:06:36,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995296392] [2024-11-09 05:06:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995296392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930822373] [2024-11-09 05:06:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:36,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:36,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:36,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:36,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:06:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:37,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:06:37,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 05:06:37,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:06:37,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930822373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:37,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:06:37,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 05:06:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931172461] [2024-11-09 05:06:37,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:37,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:06:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:06:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:06:37,249 INFO L87 Difference]: Start difference. First operand 12270 states and 20755 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:38,160 INFO L93 Difference]: Finished difference Result 26155 states and 45096 transitions. [2024-11-09 05:06:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:06:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 155 [2024-11-09 05:06:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:38,257 INFO L225 Difference]: With dead ends: 26155 [2024-11-09 05:06:38,258 INFO L226 Difference]: Without dead ends: 13902 [2024-11-09 05:06:38,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:06:38,446 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 142 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:38,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1381 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:06:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13902 states. [2024-11-09 05:06:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13902 to 13596. [2024-11-09 05:06:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13596 states, 10476 states have (on average 1.6787896143566248) internal successors, (17587), 10973 states have internal predecessors, (17587), 2416 states have call successors, (2416), 672 states have call predecessors, (2416), 703 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-09 05:06:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13596 states to 13596 states and 23237 transitions. [2024-11-09 05:06:39,231 INFO L78 Accepts]: Start accepts. Automaton has 13596 states and 23237 transitions. Word has length 155 [2024-11-09 05:06:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:39,232 INFO L471 AbstractCegarLoop]: Abstraction has 13596 states and 23237 transitions. [2024-11-09 05:06:39,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13596 states and 23237 transitions. [2024-11-09 05:06:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-09 05:06:39,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:39,240 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:39,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:06:39,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 05:06:39,445 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:39,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1677793794, now seen corresponding path program 1 times [2024-11-09 05:06:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:39,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20991911] [2024-11-09 05:06:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 05:06:42,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:42,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20991911] [2024-11-09 05:06:42,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20991911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:42,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317903471] [2024-11-09 05:06:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:42,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:42,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:42,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:42,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:06:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:42,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:06:42,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 05:06:42,974 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:06:42,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317903471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:42,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:06:42,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2024-11-09 05:06:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570664587] [2024-11-09 05:06:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:42,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:06:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:06:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:06:42,984 INFO L87 Difference]: Start difference. First operand 13596 states and 23237 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:44,589 INFO L93 Difference]: Finished difference Result 28909 states and 50094 transitions. [2024-11-09 05:06:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:06:44,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 159 [2024-11-09 05:06:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:44,740 INFO L225 Difference]: With dead ends: 28909 [2024-11-09 05:06:44,741 INFO L226 Difference]: Without dead ends: 15330 [2024-11-09 05:06:44,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:06:44,983 INFO L432 NwaCegarLoop]: 467 mSDtfsCounter, 140 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:44,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1378 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:06:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15330 states. [2024-11-09 05:06:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15330 to 14922. [2024-11-09 05:06:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14922 states, 11768 states have (on average 1.7053874915023792) internal successors, (20069), 12265 states have internal predecessors, (20069), 2416 states have call successors, (2416), 706 states have call predecessors, (2416), 737 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-09 05:06:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14922 states to 14922 states and 25719 transitions. [2024-11-09 05:06:45,922 INFO L78 Accepts]: Start accepts. Automaton has 14922 states and 25719 transitions. Word has length 159 [2024-11-09 05:06:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:45,923 INFO L471 AbstractCegarLoop]: Abstraction has 14922 states and 25719 transitions. [2024-11-09 05:06:45,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 14922 states and 25719 transitions. [2024-11-09 05:06:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 05:06:45,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:45,932 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:45,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:06:46,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 05:06:46,136 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:46,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1455375698, now seen corresponding path program 1 times [2024-11-09 05:06:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:46,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138916729] [2024-11-09 05:06:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:46,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 05:06:48,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:48,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138916729] [2024-11-09 05:06:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138916729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:48,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863154613] [2024-11-09 05:06:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:48,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:48,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:48,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:06:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:48,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:06:48,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:06:48,854 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:06:48,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863154613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:48,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:06:48,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2024-11-09 05:06:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247132811] [2024-11-09 05:06:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:48,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:06:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:06:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:06:48,858 INFO L87 Difference]: Start difference. First operand 14922 states and 25719 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:49,817 INFO L93 Difference]: Finished difference Result 31663 states and 55092 transitions. [2024-11-09 05:06:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:06:49,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 162 [2024-11-09 05:06:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:49,908 INFO L225 Difference]: With dead ends: 31663 [2024-11-09 05:06:49,908 INFO L226 Difference]: Without dead ends: 16758 [2024-11-09 05:06:49,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:06:49,948 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 138 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:49,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1368 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:06:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16758 states. [2024-11-09 05:06:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16758 to 16248. [2024-11-09 05:06:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16248 states, 13060 states have (on average 1.7267228177641654) internal successors, (22551), 13557 states have internal predecessors, (22551), 2416 states have call successors, (2416), 740 states have call predecessors, (2416), 771 states have return successors, (3234), 2183 states have call predecessors, (3234), 2411 states have call successors, (3234) [2024-11-09 05:06:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16248 states to 16248 states and 28201 transitions. [2024-11-09 05:06:50,791 INFO L78 Accepts]: Start accepts. Automaton has 16248 states and 28201 transitions. Word has length 162 [2024-11-09 05:06:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:50,792 INFO L471 AbstractCegarLoop]: Abstraction has 16248 states and 28201 transitions. [2024-11-09 05:06:50,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-09 05:06:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 16248 states and 28201 transitions. [2024-11-09 05:06:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-09 05:06:50,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:50,800 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:50,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:06:51,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:51,004 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:51,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1325477980, now seen corresponding path program 1 times [2024-11-09 05:06:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731216615] [2024-11-09 05:06:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-09 05:06:53,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:53,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731216615] [2024-11-09 05:06:53,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731216615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:53,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551294957] [2024-11-09 05:06:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:53,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:53,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:53,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:06:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:53,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:06:53,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 05:06:54,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:06:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551294957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:06:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2024-11-09 05:06:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006126068] [2024-11-09 05:06:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:54,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:06:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:06:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:06:54,125 INFO L87 Difference]: Start difference. First operand 16248 states and 28201 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-09 05:06:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:55,121 INFO L93 Difference]: Finished difference Result 33948 states and 58972 transitions. [2024-11-09 05:06:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:06:55,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 164 [2024-11-09 05:06:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:55,262 INFO L225 Difference]: With dead ends: 33948 [2024-11-09 05:06:55,262 INFO L226 Difference]: Without dead ends: 17762 [2024-11-09 05:06:55,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:06:55,334 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 291 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:55,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1477 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:06:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17762 states. [2024-11-09 05:06:56,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17762 to 17574. [2024-11-09 05:06:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17574 states, 13944 states have (on average 1.7023092369477912) internal successors, (23737), 14458 states have internal predecessors, (23737), 2688 states have call successors, (2688), 910 states have call predecessors, (2688), 941 states have return successors, (4072), 2421 states have call predecessors, (4072), 2683 states have call successors, (4072) [2024-11-09 05:06:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17574 states to 17574 states and 30497 transitions. [2024-11-09 05:06:56,531 INFO L78 Accepts]: Start accepts. Automaton has 17574 states and 30497 transitions. Word has length 164 [2024-11-09 05:06:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:56,532 INFO L471 AbstractCegarLoop]: Abstraction has 17574 states and 30497 transitions. [2024-11-09 05:06:56,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-09 05:06:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 17574 states and 30497 transitions. [2024-11-09 05:06:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-09 05:06:56,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:56,539 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:56,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:06:56,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 05:06:56,744 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:56,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1161170648, now seen corresponding path program 1 times [2024-11-09 05:06:56,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:56,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963713081] [2024-11-09 05:06:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:56,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-09 05:06:58,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:58,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963713081] [2024-11-09 05:06:58,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963713081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:58,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755721952] [2024-11-09 05:06:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:58,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:58,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:58,675 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:58,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:06:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:59,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 1816 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:06:59,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 05:06:59,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:06:59,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755721952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:59,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:06:59,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2024-11-09 05:06:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10913484] [2024-11-09 05:06:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:59,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:06:59,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:06:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:06:59,391 INFO L87 Difference]: Start difference. First operand 17574 states and 30497 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-09 05:07:00,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:00,436 INFO L93 Difference]: Finished difference Result 17762 states and 30747 transitions. [2024-11-09 05:07:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:07:00,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 167 [2024-11-09 05:07:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:00,543 INFO L225 Difference]: With dead ends: 17762 [2024-11-09 05:07:00,544 INFO L226 Difference]: Without dead ends: 17676 [2024-11-09 05:07:00,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:07:00,557 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:00,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1577 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:07:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17676 states. [2024-11-09 05:07:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17676 to 17670. [2024-11-09 05:07:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17670 states, 14040 states have (on average 1.6975071225071225) internal successors, (23833), 14554 states have internal predecessors, (23833), 2688 states have call successors, (2688), 910 states have call predecessors, (2688), 941 states have return successors, (4072), 2421 states have call predecessors, (4072), 2683 states have call successors, (4072) [2024-11-09 05:07:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17670 states to 17670 states and 30593 transitions. [2024-11-09 05:07:01,637 INFO L78 Accepts]: Start accepts. Automaton has 17670 states and 30593 transitions. Word has length 167 [2024-11-09 05:07:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:01,638 INFO L471 AbstractCegarLoop]: Abstraction has 17670 states and 30593 transitions. [2024-11-09 05:07:01,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-09 05:07:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17670 states and 30593 transitions. [2024-11-09 05:07:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-09 05:07:01,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:01,651 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:01,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:07:01,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 05:07:01,852 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:07:01,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash -74708440, now seen corresponding path program 1 times [2024-11-09 05:07:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:01,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251870743] [2024-11-09 05:07:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:01,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 05:07:03,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:03,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251870743] [2024-11-09 05:07:03,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251870743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:03,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497462657] [2024-11-09 05:07:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:03,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:03,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:03,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:07:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:04,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 05:07:04,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 64 proven. 12 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 05:07:05,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:12,553 WARN L286 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 2226 DAG size of output: 11 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:09:27,508 WARN L286 SmtUtils]: Spent 2.24m on a formula simplification. DAG size of input: 1439 DAG size of output: 49 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:11:39,497 WARN L286 SmtUtils]: Spent 2.19m on a formula simplification. DAG size of input: 1440 DAG size of output: 50 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:11:46,934 WARN L286 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 2226 DAG size of output: 11 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:14:00,596 WARN L286 SmtUtils]: Spent 2.22m on a formula simplification. DAG size of input: 1439 DAG size of output: 49 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:16:05,921 WARN L286 SmtUtils]: Spent 2.08m on a formula simplification. DAG size of input: 1440 DAG size of output: 50 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:18:33,033 WARN L286 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 1439 DAG size of output: 49 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:18:42,496 WARN L286 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 2226 DAG size of output: 11 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:18:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-09 05:18:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497462657] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:42,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:18:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22, 14] total 43 [2024-11-09 05:18:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468282383] [2024-11-09 05:18:42,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:42,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:18:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:18:42,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1642, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 05:18:42,819 INFO L87 Difference]: Start difference. First operand 17670 states and 30593 transitions. Second operand has 12 states, 9 states have (on average 11.11111111111111) internal successors, (100), 11 states have internal predecessors, (100), 9 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2024-11-09 05:18:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:48,699 INFO L93 Difference]: Finished difference Result 37701 states and 78303 transitions. [2024-11-09 05:18:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:18:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 11.11111111111111) internal successors, (100), 11 states have internal predecessors, (100), 9 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 190 [2024-11-09 05:18:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:48,957 INFO L225 Difference]: With dead ends: 37701 [2024-11-09 05:18:48,957 INFO L226 Difference]: Without dead ends: 23451 [2024-11-09 05:18:49,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=398, Invalid=3384, Unknown=0, NotChecked=0, Total=3782 [2024-11-09 05:18:49,157 INFO L432 NwaCegarLoop]: 896 mSDtfsCounter, 1729 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:49,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 3113 Invalid, 3922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [469 Valid, 3453 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 05:18:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23451 states. [2024-11-09 05:18:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23451 to 20368. [2024-11-09 05:18:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20368 states, 15882 states have (on average 1.6259916887041934) internal successors, (25824), 16547 states have internal predecessors, (25824), 3323 states have call successors, (3323), 1080 states have call predecessors, (3323), 1162 states have return successors, (5733), 2955 states have call predecessors, (5733), 3318 states have call successors, (5733) [2024-11-09 05:18:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20368 states to 20368 states and 34880 transitions. [2024-11-09 05:18:51,068 INFO L78 Accepts]: Start accepts. Automaton has 20368 states and 34880 transitions. Word has length 190 [2024-11-09 05:18:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:51,068 INFO L471 AbstractCegarLoop]: Abstraction has 20368 states and 34880 transitions. [2024-11-09 05:18:51,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 11.11111111111111) internal successors, (100), 11 states have internal predecessors, (100), 9 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2024-11-09 05:18:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 20368 states and 34880 transitions. [2024-11-09 05:18:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-09 05:18:51,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:51,084 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:51,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:18:51,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 05:18:51,285 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:18:51,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash -338277051, now seen corresponding path program 1 times [2024-11-09 05:18:51,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:51,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791306545] [2024-11-09 05:18:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:51,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 05:18:53,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:53,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791306545] [2024-11-09 05:18:53,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791306545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:53,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059563740] [2024-11-09 05:18:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:53,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:53,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:53,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:53,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6effdafc-eb41-4a09-98be-bf358b01e89d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:18:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:54,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 05:18:54,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 05:18:55,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:19:02,816 WARN L286 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 2226 DAG size of output: 10 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)