./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.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_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/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_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/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_04b073fc-29dc-4331-aad7-d3b91375e043/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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:04:04,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:04:04,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:04:04,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:04:04,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:04:05,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:04:05,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:04:05,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:04:05,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:04:05,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:04:05,046 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:04:05,047 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:04:05,047 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:04:05,048 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:04:05,048 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:04:05,051 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:04:05,052 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:04:05,052 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:04:05,052 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:04:05,053 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:04:05,053 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:04:05,058 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:04:05,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:04:05,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:04:05,059 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:04:05,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:04:05,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:04:05,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:04:05,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:04:05,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:04:05,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:04:05,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:04:05,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:04:05,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:04:05,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:04:05,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:04:05,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:04:05,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:04:05,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:04:05,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:04:05,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:04:05,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:04:05,068 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:04:05,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:04:05,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:04:05,070 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:04:05,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:04:05,070 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_04b073fc-29dc-4331-aad7-d3b91375e043/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2024-11-09 06:04:05,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:04:05,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:04:05,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:04:05,492 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:04:05,494 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:04:05,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c Unable to find full path for "g++" [2024-11-09 06:04:08,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:04:08,536 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:04:08,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2024-11-09 06:04:08,576 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/data/db09758bd/c81fdc974da8444cb3adbce1897d28cb/FLAG41e242214 [2024-11-09 06:04:08,603 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/data/db09758bd/c81fdc974da8444cb3adbce1897d28cb [2024-11-09 06:04:08,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:04:08,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:04:08,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:04:08,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:04:08,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:04:08,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:04:08" (1/1) ... [2024-11-09 06:04:08,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d696e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:08, skipping insertion in model container [2024-11-09 06:04:08,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:04:08" (1/1) ... [2024-11-09 06:04:08,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:04:09,428 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_04b073fc-29dc-4331-aad7-d3b91375e043/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-11-09 06:04:09,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:04:09,596 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:04:09,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-09 06:04:09,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2024-11-09 06:04:09,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2024-11-09 06:04:09,613 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2024-11-09 06:04:09,613 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2024-11-09 06:04:09,613 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2024-11-09 06:04:09,614 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2024-11-09 06:04:09,614 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2024-11-09 06:04:09,614 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2024-11-09 06:04:09,615 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2024-11-09 06:04:09,746 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_04b073fc-29dc-4331-aad7-d3b91375e043/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-11-09 06:04:09,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:04:09,847 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:04:09,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09 WrapperNode [2024-11-09 06:04:09,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:04:09,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:04:09,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:04:09,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:04:09,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:09,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:09,984 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 860 [2024-11-09 06:04:09,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:04:09,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:04:09,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:04:09,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:04:10,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:04:10,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:04:10,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:04:10,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:04:10,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (1/1) ... [2024-11-09 06:04:10,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:04:10,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:10,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:04:10,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:04:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-09 06:04:10,184 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-09 06:04:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:04:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-09 06:04:10,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-09 06:04:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-09 06:04:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-09 06:04:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-09 06:04:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-09 06:04:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 06:04:10,187 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 06:04:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 06:04:10,189 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 06:04:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-09 06:04:10,189 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-09 06:04:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 06:04:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 06:04:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-09 06:04:10,190 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-09 06:04:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 06:04:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 06:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 06:04:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 06:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-09 06:04:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-09 06:04:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 06:04:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 06:04:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 06:04:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 06:04:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 06:04:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 06:04:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 06:04:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 06:04:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 06:04:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 06:04:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 06:04:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 06:04:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 06:04:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 06:04:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 06:04:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 06:04:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:04:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-09 06:04:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-09 06:04:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 06:04:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 06:04:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 06:04:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 06:04:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 06:04:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 06:04:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:04:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:04:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 06:04:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 06:04:10,404 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:04:10,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:04:12,265 INFO L? ?]: Removed 472 outVars from TransFormulas that were not future-live. [2024-11-09 06:04:12,265 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:04:13,617 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:04:13,617 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 06:04:13,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:04:13 BoogieIcfgContainer [2024-11-09 06:04:13,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:04:13,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:04:13,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:04:13,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:04:13,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:04:08" (1/3) ... [2024-11-09 06:04:13,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bae5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:04:13, skipping insertion in model container [2024-11-09 06:04:13,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:04:09" (2/3) ... [2024-11-09 06:04:13,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bae5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:04:13, skipping insertion in model container [2024-11-09 06:04:13,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:04:13" (3/3) ... [2024-11-09 06:04:13,633 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2024-11-09 06:04:13,656 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:04:13,657 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:04:13,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:04:13,767 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;@7b02c396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:04:13,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:04:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 282 states have (on average 1.599290780141844) internal successors, (451), 300 states have internal predecessors, (451), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-09 06:04:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 06:04:13,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:13,822 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:13,823 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:13,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1343409744, now seen corresponding path program 1 times [2024-11-09 06:04:13,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:13,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766339668] [2024-11-09 06:04:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:13,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:15,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766339668] [2024-11-09 06:04:15,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766339668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:15,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:15,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:04:15,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108897484] [2024-11-09 06:04:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:15,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:04:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:04:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:15,250 INFO L87 Difference]: Start difference. First operand has 409 states, 282 states have (on average 1.599290780141844) internal successors, (451), 300 states have internal predecessors, (451), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 06:04:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:16,250 INFO L93 Difference]: Finished difference Result 1204 states and 1950 transitions. [2024-11-09 06:04:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:04:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 82 [2024-11-09 06:04:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:16,290 INFO L225 Difference]: With dead ends: 1204 [2024-11-09 06:04:16,291 INFO L226 Difference]: Without dead ends: 800 [2024-11-09 06:04:16,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:04:16,312 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 762 mSDsluCounter, 3510 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:16,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 4268 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:04:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-09 06:04:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 784. [2024-11-09 06:04:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 549 states have (on average 1.5810564663023678) internal successors, (868), 576 states have internal predecessors, (868), 188 states have call successors, (188), 47 states have call predecessors, (188), 46 states have return successors, (193), 185 states have call predecessors, (193), 184 states have call successors, (193) [2024-11-09 06:04:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1249 transitions. [2024-11-09 06:04:16,503 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1249 transitions. Word has length 82 [2024-11-09 06:04:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:16,505 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1249 transitions. [2024-11-09 06:04:16,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 06:04:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1249 transitions. [2024-11-09 06:04:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 06:04:16,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:16,514 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:16,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:04:16,514 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:16,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash 262104775, now seen corresponding path program 1 times [2024-11-09 06:04:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009685018] [2024-11-09 06:04:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:17,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:17,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009685018] [2024-11-09 06:04:17,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009685018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:17,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:17,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:04:17,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341679834] [2024-11-09 06:04:17,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:17,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:04:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:04:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:17,270 INFO L87 Difference]: Start difference. First operand 784 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:04:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:17,682 INFO L93 Difference]: Finished difference Result 1193 states and 1904 transitions. [2024-11-09 06:04:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:04:17,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2024-11-09 06:04:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:17,692 INFO L225 Difference]: With dead ends: 1193 [2024-11-09 06:04:17,692 INFO L226 Difference]: Without dead ends: 803 [2024-11-09 06:04:17,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:17,698 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:17,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3577 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:04:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-09 06:04:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 798. [2024-11-09 06:04:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 559 states have (on average 1.5706618962432917) internal successors, (878), 586 states have internal predecessors, (878), 188 states have call successors, (188), 47 states have call predecessors, (188), 50 states have return successors, (203), 189 states have call predecessors, (203), 184 states have call successors, (203) [2024-11-09 06:04:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1269 transitions. [2024-11-09 06:04:17,787 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1269 transitions. Word has length 87 [2024-11-09 06:04:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:17,789 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1269 transitions. [2024-11-09 06:04:17,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:04:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1269 transitions. [2024-11-09 06:04:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 06:04:17,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:17,800 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:17,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:04:17,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:17,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -566629587, now seen corresponding path program 1 times [2024-11-09 06:04:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827083941] [2024-11-09 06:04:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:18,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827083941] [2024-11-09 06:04:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827083941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:18,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:18,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:04:18,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140587943] [2024-11-09 06:04:18,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:18,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:04:18,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:04:18,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:18,307 INFO L87 Difference]: Start difference. First operand 798 states and 1269 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:04:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:18,693 INFO L93 Difference]: Finished difference Result 1210 states and 1926 transitions. [2024-11-09 06:04:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:04:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2024-11-09 06:04:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:18,702 INFO L225 Difference]: With dead ends: 1210 [2024-11-09 06:04:18,702 INFO L226 Difference]: Without dead ends: 813 [2024-11-09 06:04:18,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:18,707 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 0 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:18,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3564 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:04:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-09 06:04:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 800. [2024-11-09 06:04:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 561 states have (on average 1.5686274509803921) internal successors, (880), 586 states have internal predecessors, (880), 188 states have call successors, (188), 47 states have call predecessors, (188), 50 states have return successors, (203), 191 states have call predecessors, (203), 184 states have call successors, (203) [2024-11-09 06:04:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1271 transitions. [2024-11-09 06:04:18,768 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1271 transitions. Word has length 86 [2024-11-09 06:04:18,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:18,769 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1271 transitions. [2024-11-09 06:04:18,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:04:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1271 transitions. [2024-11-09 06:04:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 06:04:18,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:18,774 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:18,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:04:18,775 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:18,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:18,775 INFO L85 PathProgramCache]: Analyzing trace with hash 936066279, now seen corresponding path program 1 times [2024-11-09 06:04:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802780823] [2024-11-09 06:04:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:18,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:19,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:19,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802780823] [2024-11-09 06:04:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802780823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:19,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:04:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615703405] [2024-11-09 06:04:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:19,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:04:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:04:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:19,234 INFO L87 Difference]: Start difference. First operand 800 states and 1271 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:04:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:19,581 INFO L93 Difference]: Finished difference Result 1213 states and 1929 transitions. [2024-11-09 06:04:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:04:19,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2024-11-09 06:04:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:19,589 INFO L225 Difference]: With dead ends: 1213 [2024-11-09 06:04:19,590 INFO L226 Difference]: Without dead ends: 815 [2024-11-09 06:04:19,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:19,595 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:19,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3577 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:04:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-09 06:04:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 802. [2024-11-09 06:04:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 563 states have (on average 1.566607460035524) internal successors, (882), 586 states have internal predecessors, (882), 188 states have call successors, (188), 47 states have call predecessors, (188), 50 states have return successors, (203), 193 states have call predecessors, (203), 184 states have call successors, (203) [2024-11-09 06:04:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1273 transitions. [2024-11-09 06:04:19,650 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1273 transitions. Word has length 87 [2024-11-09 06:04:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:19,651 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 1273 transitions. [2024-11-09 06:04:19,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 06:04:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1273 transitions. [2024-11-09 06:04:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 06:04:19,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:19,656 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:19,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:04:19,657 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:19,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 959371343, now seen corresponding path program 1 times [2024-11-09 06:04:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716737983] [2024-11-09 06:04:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:19,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:20,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716737983] [2024-11-09 06:04:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716737983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:20,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:20,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:04:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972002307] [2024-11-09 06:04:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:20,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:04:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:04:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:04:20,071 INFO L87 Difference]: Start difference. First operand 802 states and 1273 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 06:04:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:21,602 INFO L93 Difference]: Finished difference Result 1719 states and 2740 transitions. [2024-11-09 06:04:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:04:21,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 91 [2024-11-09 06:04:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:21,617 INFO L225 Difference]: With dead ends: 1719 [2024-11-09 06:04:21,617 INFO L226 Difference]: Without dead ends: 1199 [2024-11-09 06:04:21,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 06:04:21,624 INFO L432 NwaCegarLoop]: 1073 mSDtfsCounter, 1142 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:21,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1940 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 06:04:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2024-11-09 06:04:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1180. [2024-11-09 06:04:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 819 states have (on average 1.5189255189255189) internal successors, (1244), 853 states have internal predecessors, (1244), 278 states have call successors, (278), 76 states have call predecessors, (278), 82 states have return successors, (318), 288 states have call predecessors, (318), 273 states have call successors, (318) [2024-11-09 06:04:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1840 transitions. [2024-11-09 06:04:21,756 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1840 transitions. Word has length 91 [2024-11-09 06:04:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:21,757 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1840 transitions. [2024-11-09 06:04:21,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 06:04:21,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1840 transitions. [2024-11-09 06:04:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 06:04:21,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:21,763 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:21,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:04:21,763 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:21,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:21,764 INFO L85 PathProgramCache]: Analyzing trace with hash 216302917, now seen corresponding path program 1 times [2024-11-09 06:04:21,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:21,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357448250] [2024-11-09 06:04:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:21,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:22,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:22,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357448250] [2024-11-09 06:04:22,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357448250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:22,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:22,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:04:22,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225855028] [2024-11-09 06:04:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:22,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:04:22,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:04:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:04:22,146 INFO L87 Difference]: Start difference. First operand 1180 states and 1840 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 06:04:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:23,747 INFO L93 Difference]: Finished difference Result 4569 states and 7416 transitions. [2024-11-09 06:04:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:04:23,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 94 [2024-11-09 06:04:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:23,780 INFO L225 Difference]: With dead ends: 4569 [2024-11-09 06:04:23,780 INFO L226 Difference]: Without dead ends: 3404 [2024-11-09 06:04:23,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 06:04:23,796 INFO L432 NwaCegarLoop]: 1225 mSDtfsCounter, 1187 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:23,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 2485 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:04:23,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2024-11-09 06:04:24,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2940. [2024-11-09 06:04:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2108 states have (on average 1.5033206831119545) internal successors, (3169), 2166 states have internal predecessors, (3169), 617 states have call successors, (617), 194 states have call predecessors, (617), 214 states have return successors, (885), 637 states have call predecessors, (885), 606 states have call successors, (885) [2024-11-09 06:04:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4671 transitions. [2024-11-09 06:04:24,068 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4671 transitions. Word has length 94 [2024-11-09 06:04:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:24,068 INFO L471 AbstractCegarLoop]: Abstraction has 2940 states and 4671 transitions. [2024-11-09 06:04:24,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 06:04:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4671 transitions. [2024-11-09 06:04:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 06:04:24,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:24,073 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:24,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:04:24,073 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:24,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash -497958268, now seen corresponding path program 1 times [2024-11-09 06:04:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:24,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191857372] [2024-11-09 06:04:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:24,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:24,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191857372] [2024-11-09 06:04:24,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191857372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:24,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:24,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:04:24,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18604014] [2024-11-09 06:04:24,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:24,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:04:24,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:24,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:04:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:04:24,444 INFO L87 Difference]: Start difference. First operand 2940 states and 4671 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 06:04:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:25,460 INFO L93 Difference]: Finished difference Result 5060 states and 8073 transitions. [2024-11-09 06:04:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:04:25,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 96 [2024-11-09 06:04:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:25,489 INFO L225 Difference]: With dead ends: 5060 [2024-11-09 06:04:25,489 INFO L226 Difference]: Without dead ends: 2980 [2024-11-09 06:04:25,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:04:25,513 INFO L432 NwaCegarLoop]: 760 mSDtfsCounter, 519 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:25,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2668 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:04:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2024-11-09 06:04:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2955. [2024-11-09 06:04:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2117 states have (on average 1.5011809163911196) internal successors, (3178), 2178 states have internal predecessors, (3178), 620 states have call successors, (620), 197 states have call predecessors, (620), 217 states have return successors, (894), 637 states have call predecessors, (894), 609 states have call successors, (894) [2024-11-09 06:04:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4692 transitions. [2024-11-09 06:04:25,765 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4692 transitions. Word has length 96 [2024-11-09 06:04:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:25,767 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 4692 transitions. [2024-11-09 06:04:25,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 06:04:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4692 transitions. [2024-11-09 06:04:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 06:04:25,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:25,771 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-09 06:04:25,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:04:25,772 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:25,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 906476403, now seen corresponding path program 1 times [2024-11-09 06:04:25,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:25,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637645976] [2024-11-09 06:04:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 06:04:26,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:26,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637645976] [2024-11-09 06:04:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637645976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:26,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:04:26,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:04:26,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429936109] [2024-11-09 06:04:26,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:26,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:04:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:04:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:04:26,044 INFO L87 Difference]: Start difference. First operand 2955 states and 4692 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 06:04:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:26,571 INFO L93 Difference]: Finished difference Result 5638 states and 9256 transitions. [2024-11-09 06:04:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:04:26,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 100 [2024-11-09 06:04:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:26,604 INFO L225 Difference]: With dead ends: 5638 [2024-11-09 06:04:26,604 INFO L226 Difference]: Without dead ends: 3309 [2024-11-09 06:04:26,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:04:26,636 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 206 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:26,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1638 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:04:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2024-11-09 06:04:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 3269. [2024-11-09 06:04:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2411 states have (on average 1.5055993363749482) internal successors, (3630), 2492 states have internal predecessors, (3630), 620 states have call successors, (620), 197 states have call predecessors, (620), 237 states have return successors, (969), 637 states have call predecessors, (969), 609 states have call successors, (969) [2024-11-09 06:04:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 5219 transitions. [2024-11-09 06:04:27,033 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 5219 transitions. Word has length 100 [2024-11-09 06:04:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:27,035 INFO L471 AbstractCegarLoop]: Abstraction has 3269 states and 5219 transitions. [2024-11-09 06:04:27,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 06:04:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 5219 transitions. [2024-11-09 06:04:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 06:04:27,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:27,042 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-09 06:04:27,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:04:27,043 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:27,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1086450313, now seen corresponding path program 1 times [2024-11-09 06:04:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114767719] [2024-11-09 06:04:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:04:27,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114767719] [2024-11-09 06:04:27,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114767719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603026221] [2024-11-09 06:04:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:27,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:27,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:27,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:27,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:04:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:27,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:04:27,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:04:27,867 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603026221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:27,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-09 06:04:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000171932] [2024-11-09 06:04:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:27,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:04:27,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:04:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:04:27,870 INFO L87 Difference]: Start difference. First operand 3269 states and 5219 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:28,414 INFO L93 Difference]: Finished difference Result 6577 states and 10674 transitions. [2024-11-09 06:04:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:04:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2024-11-09 06:04:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:28,445 INFO L225 Difference]: With dead ends: 6577 [2024-11-09 06:04:28,445 INFO L226 Difference]: Without dead ends: 3323 [2024-11-09 06:04:28,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:04:28,483 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 26 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:28,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1748 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:04:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-09 06:04:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3323. [2024-11-09 06:04:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 2456 states have (on average 1.5) internal successors, (3684), 2537 states have internal predecessors, (3684), 620 states have call successors, (620), 206 states have call predecessors, (620), 246 states have return successors, (969), 637 states have call predecessors, (969), 609 states have call successors, (969) [2024-11-09 06:04:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 5273 transitions. [2024-11-09 06:04:28,766 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 5273 transitions. Word has length 99 [2024-11-09 06:04:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:28,767 INFO L471 AbstractCegarLoop]: Abstraction has 3323 states and 5273 transitions. [2024-11-09 06:04:28,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 5273 transitions. [2024-11-09 06:04:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 06:04:28,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:28,772 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:28,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:04:28,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:28,974 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:28,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash -299305986, now seen corresponding path program 1 times [2024-11-09 06:04:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976886221] [2024-11-09 06:04:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:29,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:29,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976886221] [2024-11-09 06:04:29,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976886221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788742078] [2024-11-09 06:04:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:29,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:29,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:04:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:29,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:04:29,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 06:04:29,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:29,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788742078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:29,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:29,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-09 06:04:29,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514977856] [2024-11-09 06:04:29,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:29,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:04:29,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:29,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:04:29,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:29,984 INFO L87 Difference]: Start difference. First operand 3323 states and 5273 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:30,443 INFO L93 Difference]: Finished difference Result 6658 states and 10696 transitions. [2024-11-09 06:04:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:04:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2024-11-09 06:04:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:30,478 INFO L225 Difference]: With dead ends: 6658 [2024-11-09 06:04:30,479 INFO L226 Difference]: Without dead ends: 3314 [2024-11-09 06:04:30,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:04:30,506 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 32 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:30,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1744 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:04:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2024-11-09 06:04:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3314. [2024-11-09 06:04:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 2447 states have (on average 1.4908050674295055) internal successors, (3648), 2528 states have internal predecessors, (3648), 620 states have call successors, (620), 206 states have call predecessors, (620), 246 states have return successors, (969), 637 states have call predecessors, (969), 609 states have call successors, (969) [2024-11-09 06:04:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 5237 transitions. [2024-11-09 06:04:30,788 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 5237 transitions. Word has length 101 [2024-11-09 06:04:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:30,789 INFO L471 AbstractCegarLoop]: Abstraction has 3314 states and 5237 transitions. [2024-11-09 06:04:30,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 5237 transitions. [2024-11-09 06:04:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 06:04:30,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:30,798 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:30,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:04:30,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 06:04:30,999 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:31,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash -314487190, now seen corresponding path program 1 times [2024-11-09 06:04:31,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:31,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301202358] [2024-11-09 06:04:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:31,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:04:31,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:31,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301202358] [2024-11-09 06:04:31,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301202358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:31,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981839443] [2024-11-09 06:04:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:31,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:31,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:31,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:31,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:04:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:31,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:04:31,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:04:32,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:32,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981839443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:32,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:32,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-09 06:04:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465007469] [2024-11-09 06:04:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:32,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:04:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:04:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:04:32,052 INFO L87 Difference]: Start difference. First operand 3314 states and 5237 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:33,826 INFO L93 Difference]: Finished difference Result 8460 states and 14085 transitions. [2024-11-09 06:04:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:04:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 102 [2024-11-09 06:04:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:33,899 INFO L225 Difference]: With dead ends: 8460 [2024-11-09 06:04:33,899 INFO L226 Difference]: Without dead ends: 5161 [2024-11-09 06:04:33,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:04:33,943 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 610 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:33,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1869 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:04:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2024-11-09 06:04:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 5070. [2024-11-09 06:04:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5070 states, 3732 states have (on average 1.4603429796355842) internal successors, (5450), 3868 states have internal predecessors, (5450), 956 states have call successors, (956), 324 states have call predecessors, (956), 381 states have return successors, (1765), 971 states have call predecessors, (1765), 939 states have call successors, (1765) [2024-11-09 06:04:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 8171 transitions. [2024-11-09 06:04:34,508 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 8171 transitions. Word has length 102 [2024-11-09 06:04:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:34,509 INFO L471 AbstractCegarLoop]: Abstraction has 5070 states and 8171 transitions. [2024-11-09 06:04:34,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 8171 transitions. [2024-11-09 06:04:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 06:04:34,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:34,518 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:34,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:04:34,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 06:04:34,720 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:34,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:34,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2123436576, now seen corresponding path program 1 times [2024-11-09 06:04:34,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:34,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112277037] [2024-11-09 06:04:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:34,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:04:35,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112277037] [2024-11-09 06:04:35,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112277037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166266841] [2024-11-09 06:04:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:35,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:35,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:04:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:35,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:04:35,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:04:35,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166266841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:35,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 06:04:35,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277608534] [2024-11-09 06:04:35,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:35,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:04:35,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:04:35,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:04:35,942 INFO L87 Difference]: Start difference. First operand 5070 states and 8171 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:37,620 INFO L93 Difference]: Finished difference Result 11193 states and 18504 transitions. [2024-11-09 06:04:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:04:37,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 103 [2024-11-09 06:04:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:37,683 INFO L225 Difference]: With dead ends: 11193 [2024-11-09 06:04:37,684 INFO L226 Difference]: Without dead ends: 6138 [2024-11-09 06:04:37,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:04:37,727 INFO L432 NwaCegarLoop]: 806 mSDtfsCounter, 685 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:37,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 3127 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:04:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2024-11-09 06:04:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 6114. [2024-11-09 06:04:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 4511 states have (on average 1.4431389935712702) internal successors, (6510), 4659 states have internal predecessors, (6510), 1095 states have call successors, (1095), 449 states have call predecessors, (1095), 507 states have return successors, (2641), 1099 states have call predecessors, (2641), 1066 states have call successors, (2641) [2024-11-09 06:04:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 10246 transitions. [2024-11-09 06:04:38,362 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 10246 transitions. Word has length 103 [2024-11-09 06:04:38,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:38,365 INFO L471 AbstractCegarLoop]: Abstraction has 6114 states and 10246 transitions. [2024-11-09 06:04:38,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 10246 transitions. [2024-11-09 06:04:38,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 06:04:38,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:38,372 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:38,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:04:38,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:38,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:38,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -720136544, now seen corresponding path program 1 times [2024-11-09 06:04:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328462420] [2024-11-09 06:04:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:04:38,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:38,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328462420] [2024-11-09 06:04:38,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328462420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:38,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890966450] [2024-11-09 06:04:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:38,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:38,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:38,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:38,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:04:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:39,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:04:39,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:04:39,463 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:39,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890966450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:39,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:39,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-09 06:04:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94677962] [2024-11-09 06:04:39,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:39,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:04:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:04:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:04:39,467 INFO L87 Difference]: Start difference. First operand 6114 states and 10246 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:40,290 INFO L93 Difference]: Finished difference Result 12305 states and 21203 transitions. [2024-11-09 06:04:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:04:40,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2024-11-09 06:04:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:40,353 INFO L225 Difference]: With dead ends: 12305 [2024-11-09 06:04:40,354 INFO L226 Difference]: Without dead ends: 6214 [2024-11-09 06:04:40,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:04:40,434 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:40,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2389 Invalid, 165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:04:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2024-11-09 06:04:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 6178. [2024-11-09 06:04:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 4558 states have (on average 1.4385695480473892) internal successors, (6557), 4708 states have internal predecessors, (6557), 1095 states have call successors, (1095), 449 states have call predecessors, (1095), 524 states have return successors, (2663), 1114 states have call predecessors, (2663), 1066 states have call successors, (2663) [2024-11-09 06:04:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 10315 transitions. [2024-11-09 06:04:41,261 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 10315 transitions. Word has length 103 [2024-11-09 06:04:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:41,262 INFO L471 AbstractCegarLoop]: Abstraction has 6178 states and 10315 transitions. [2024-11-09 06:04:41,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 10315 transitions. [2024-11-09 06:04:41,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 06:04:41,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:41,271 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:41,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:04:41,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:41,472 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:41,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash 333958179, now seen corresponding path program 1 times [2024-11-09 06:04:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272221142] [2024-11-09 06:04:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:04:41,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272221142] [2024-11-09 06:04:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272221142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841555869] [2024-11-09 06:04:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:41,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:41,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:41,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:41,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:04:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:42,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:04:42,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:04:42,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841555869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:42,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:42,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:04:42,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045899508] [2024-11-09 06:04:42,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:42,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:04:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:42,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:04:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:04:42,522 INFO L87 Difference]: Start difference. First operand 6178 states and 10315 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:43,400 INFO L93 Difference]: Finished difference Result 12692 states and 21949 transitions. [2024-11-09 06:04:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:04:43,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 105 [2024-11-09 06:04:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:43,479 INFO L225 Difference]: With dead ends: 12692 [2024-11-09 06:04:43,480 INFO L226 Difference]: Without dead ends: 6538 [2024-11-09 06:04:43,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:04:43,599 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 16 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:43,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1642 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:04:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2024-11-09 06:04:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 6488. [2024-11-09 06:04:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6488 states, 4857 states have (on average 1.4486308420835907) internal successors, (7036), 5018 states have internal predecessors, (7036), 1095 states have call successors, (1095), 449 states have call predecessors, (1095), 535 states have return successors, (2674), 1114 states have call predecessors, (2674), 1066 states have call successors, (2674) [2024-11-09 06:04:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6488 states to 6488 states and 10805 transitions. [2024-11-09 06:04:44,263 INFO L78 Accepts]: Start accepts. Automaton has 6488 states and 10805 transitions. Word has length 105 [2024-11-09 06:04:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:44,265 INFO L471 AbstractCegarLoop]: Abstraction has 6488 states and 10805 transitions. [2024-11-09 06:04:44,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6488 states and 10805 transitions. [2024-11-09 06:04:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 06:04:44,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:44,272 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:44,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:04:44,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:44,473 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:44,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:44,474 INFO L85 PathProgramCache]: Analyzing trace with hash 871829633, now seen corresponding path program 1 times [2024-11-09 06:04:44,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:44,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244306556] [2024-11-09 06:04:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:44,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:04:45,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:45,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244306556] [2024-11-09 06:04:45,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244306556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311199615] [2024-11-09 06:04:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:45,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:45,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:45,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:45,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:04:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:45,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:04:45,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:04:45,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:45,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311199615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:45,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:45,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-09 06:04:45,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289529205] [2024-11-09 06:04:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:45,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:04:45,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:45,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:04:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:04:45,965 INFO L87 Difference]: Start difference. First operand 6488 states and 10805 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:47,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:47,980 INFO L93 Difference]: Finished difference Result 16615 states and 30344 transitions. [2024-11-09 06:04:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:04:47,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 108 [2024-11-09 06:04:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:48,084 INFO L225 Difference]: With dead ends: 16615 [2024-11-09 06:04:48,085 INFO L226 Difference]: Without dead ends: 11148 [2024-11-09 06:04:48,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:04:48,189 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 622 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:48,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1920 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:04:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11148 states. [2024-11-09 06:04:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11148 to 10742. [2024-11-09 06:04:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10742 states, 8018 states have (on average 1.4483661761037665) internal successors, (11613), 8278 states have internal predecessors, (11613), 1847 states have call successors, (1847), 773 states have call predecessors, (1847), 876 states have return successors, (5753), 1856 states have call predecessors, (5753), 1794 states have call successors, (5753) [2024-11-09 06:04:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10742 states to 10742 states and 19213 transitions. [2024-11-09 06:04:49,443 INFO L78 Accepts]: Start accepts. Automaton has 10742 states and 19213 transitions. Word has length 108 [2024-11-09 06:04:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:49,444 INFO L471 AbstractCegarLoop]: Abstraction has 10742 states and 19213 transitions. [2024-11-09 06:04:49,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 10742 states and 19213 transitions. [2024-11-09 06:04:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 06:04:49,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:49,455 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:49,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:04:49,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 06:04:49,660 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:49,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash -215717749, now seen corresponding path program 1 times [2024-11-09 06:04:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:49,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704500212] [2024-11-09 06:04:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:49,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:04:49,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704500212] [2024-11-09 06:04:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704500212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806869566] [2024-11-09 06:04:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:49,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:49,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:49,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:04:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:50,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:04:50,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 06:04:50,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806869566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:50,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:50,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-09 06:04:50,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330396722] [2024-11-09 06:04:50,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:50,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:04:50,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:04:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:04:50,588 INFO L87 Difference]: Start difference. First operand 10742 states and 19213 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:51,977 INFO L93 Difference]: Finished difference Result 21834 states and 41337 transitions. [2024-11-09 06:04:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:04:51,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 108 [2024-11-09 06:04:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:52,092 INFO L225 Difference]: With dead ends: 21834 [2024-11-09 06:04:52,092 INFO L226 Difference]: Without dead ends: 11116 [2024-11-09 06:04:52,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:04:52,307 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 4 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:52,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1771 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:04:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11116 states. [2024-11-09 06:04:53,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11116 to 10819. [2024-11-09 06:04:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 8095 states have (on average 1.4338480543545398) internal successors, (11607), 8355 states have internal predecessors, (11607), 1847 states have call successors, (1847), 773 states have call predecessors, (1847), 876 states have return successors, (5735), 1856 states have call predecessors, (5735), 1794 states have call successors, (5735) [2024-11-09 06:04:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 19189 transitions. [2024-11-09 06:04:53,513 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 19189 transitions. Word has length 108 [2024-11-09 06:04:53,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:53,514 INFO L471 AbstractCegarLoop]: Abstraction has 10819 states and 19189 transitions. [2024-11-09 06:04:53,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:04:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 19189 transitions. [2024-11-09 06:04:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 06:04:53,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:53,520 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:53,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 06:04:53,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 06:04:53,722 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:53,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash 249266877, now seen corresponding path program 1 times [2024-11-09 06:04:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599959114] [2024-11-09 06:04:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:53,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:04:53,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:53,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599959114] [2024-11-09 06:04:53,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599959114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:53,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233146142] [2024-11-09 06:04:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:53,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:53,966 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:53,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:04:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:54,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:04:54,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:04:54,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:04:54,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233146142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:04:54,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:04:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-09 06:04:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521174061] [2024-11-09 06:04:54,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:04:54,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:04:54,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:04:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:04:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:04:54,561 INFO L87 Difference]: Start difference. First operand 10819 states and 19189 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:57,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:57,292 INFO L93 Difference]: Finished difference Result 25172 states and 48140 transitions. [2024-11-09 06:04:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:04:57,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 108 [2024-11-09 06:04:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:57,475 INFO L225 Difference]: With dead ends: 25172 [2024-11-09 06:04:57,475 INFO L226 Difference]: Without dead ends: 15386 [2024-11-09 06:04:57,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:04:57,762 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 623 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:57,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 2099 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 06:04:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15386 states. [2024-11-09 06:04:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15386 to 15000. [2024-11-09 06:04:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15000 states, 11187 states have (on average 1.4328238133547868) internal successors, (16029), 11550 states have internal predecessors, (16029), 2595 states have call successors, (2595), 1095 states have call predecessors, (2595), 1217 states have return successors, (9832), 2592 states have call predecessors, (9832), 2518 states have call successors, (9832) [2024-11-09 06:04:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15000 states to 15000 states and 28456 transitions. [2024-11-09 06:04:59,946 INFO L78 Accepts]: Start accepts. Automaton has 15000 states and 28456 transitions. Word has length 108 [2024-11-09 06:04:59,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:59,947 INFO L471 AbstractCegarLoop]: Abstraction has 15000 states and 28456 transitions. [2024-11-09 06:04:59,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:04:59,947 INFO L276 IsEmpty]: Start isEmpty. Operand 15000 states and 28456 transitions. [2024-11-09 06:04:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 06:04:59,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:59,954 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:04:59,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 06:05:00,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 06:05:00,155 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:05:00,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:05:00,158 INFO L85 PathProgramCache]: Analyzing trace with hash -247558857, now seen corresponding path program 1 times [2024-11-09 06:05:00,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:05:00,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568711051] [2024-11-09 06:05:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:05:00,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:05:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:05:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:05:00,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:05:00,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568711051] [2024-11-09 06:05:00,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568711051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:05:00,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417024196] [2024-11-09 06:05:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:05:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:05:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:05:00,610 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:05:00,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:05:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:05:01,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:05:01,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:05:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:05:01,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:05:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417024196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:05:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:05:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-09 06:05:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104439294] [2024-11-09 06:05:01,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:05:01,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:05:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:05:01,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:05:01,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:05:01,223 INFO L87 Difference]: Start difference. First operand 15000 states and 28456 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:05:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:05:04,228 INFO L93 Difference]: Finished difference Result 32863 states and 65636 transitions. [2024-11-09 06:05:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:05:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 110 [2024-11-09 06:05:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:05:04,615 INFO L225 Difference]: With dead ends: 32863 [2024-11-09 06:05:04,615 INFO L226 Difference]: Without dead ends: 18903 [2024-11-09 06:05:04,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:05:04,969 INFO L432 NwaCegarLoop]: 703 mSDtfsCounter, 662 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:05:04,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1934 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:05:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2024-11-09 06:05:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18132. [2024-11-09 06:05:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18132 states, 13373 states have (on average 1.432588050549615) internal successors, (19158), 13828 states have internal predecessors, (19158), 3267 states have call successors, (3267), 1369 states have call predecessors, (3267), 1491 states have return successors, (13513), 3244 states have call predecessors, (13513), 3172 states have call successors, (13513) [2024-11-09 06:05:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18132 states to 18132 states and 35938 transitions. [2024-11-09 06:05:08,034 INFO L78 Accepts]: Start accepts. Automaton has 18132 states and 35938 transitions. Word has length 110 [2024-11-09 06:05:08,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:05:08,034 INFO L471 AbstractCegarLoop]: Abstraction has 18132 states and 35938 transitions. [2024-11-09 06:05:08,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 06:05:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 18132 states and 35938 transitions. [2024-11-09 06:05:08,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 06:05:08,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:05:08,042 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:05:08,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 06:05:08,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 06:05:08,244 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:05:08,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:05:08,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1279920636, now seen corresponding path program 1 times [2024-11-09 06:05:08,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:05:08,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088370798] [2024-11-09 06:05:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:05:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:05:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:05:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 06:05:08,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:05:08,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088370798] [2024-11-09 06:05:08,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088370798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:05:08,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526692107] [2024-11-09 06:05:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:05:08,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:05:08,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:05:08,495 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:05:08,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b073fc-29dc-4331-aad7-d3b91375e043/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 06:05:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:05:09,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:05:09,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:05:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:05:09,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:05:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:05:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526692107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:05:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1791479642] [2024-11-09 06:05:09,646 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2024-11-09 06:05:09,646 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:05:09,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:05:09,658 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:05:09,659 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:05:29,747 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 568 for LOIs [2024-11-09 06:05:35,141 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 433 for LOIs [2024-11-09 06:05:35,451 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 536 for LOIs [2024-11-09 06:05:46,609 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 618 for LOIs [2024-11-09 06:05:51,012 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 510 for LOIs [2024-11-09 06:05:52,745 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:05:58,528 WARN L286 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:06:04,071 WARN L286 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 499 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:06:11,215 WARN L286 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 510 DAG size of output: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:06:21,143 WARN L286 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 544 DAG size of output: 514 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:06:26,790 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:06:32,447 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:06:52,688 WARN L286 SmtUtils]: Spent 19.23s on a formula simplification. DAG size of input: 618 DAG size of output: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:07:15,162 WARN L286 SmtUtils]: Spent 21.01s on a formula simplification. DAG size of input: 862 DAG size of output: 664 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:07:28,662 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 536 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:07:39,119 WARN L286 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 538 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:07:52,881 WARN L286 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 568 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:03,532 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:10,310 WARN L286 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1791479642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:08:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 6, 7] total 33 [2024-11-09 06:08:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515808733] [2024-11-09 06:08:10,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:10,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:08:10,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:08:10,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:08:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 06:08:10,322 INFO L87 Difference]: Start difference. First operand 18132 states and 35938 transitions. Second operand has 21 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-09 06:08:16,046 WARN L286 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 507 DAG size of output: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:21,259 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 514 DAG size of output: 503 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:28,968 WARN L286 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 596 DAG size of output: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:35,024 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 577 DAG size of output: 538 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:41,228 WARN L286 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 584 DAG size of output: 540 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:47,465 WARN L286 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 582 DAG size of output: 540 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:08:53,690 WARN L286 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 665 DAG size of output: 612 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:09:09,153 WARN L286 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 574 DAG size of output: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:09:15,690 WARN L286 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:09:22,225 WARN L286 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:09:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:38,550 INFO L93 Difference]: Finished difference Result 36247 states and 71856 transitions. [2024-11-09 06:09:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 06:09:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 110 [2024-11-09 06:09:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:38,775 INFO L225 Difference]: With dead ends: 36247 [2024-11-09 06:09:38,776 INFO L226 Difference]: Without dead ends: 18138 [2024-11-09 06:09:39,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 207.8s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 06:09:39,125 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 11 mSDsluCounter, 3707 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:39,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4297 Invalid, 2783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2024-11-09 06:09:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18138 states.