./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:16:24,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:16:24,640 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:16:24,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:16:24,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:16:24,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:16:24,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:16:24,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:16:24,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:16:24,685 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:16:24,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:16:24,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:16:24,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:16:24,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:16:24,689 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:16:24,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:16:24,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:16:24,691 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:16:24,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:16:24,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:16:24,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:16:24,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:16:24,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:16:24,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:16:24,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:16:24,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:16:24,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:16:24,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:16:24,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:16:24,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:16:24,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:16:24,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:16:24,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:16:24,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:16:24,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:16:24,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:16:24,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:16:24,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:16:24,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:16:24,705 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:16:24,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:16:24,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:16:24,706 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 [2023-11-29 02:16:24,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:16:25,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:16:25,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:16:25,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:16:25,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:16:25,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2023-11-29 02:16:27,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:16:28,181 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:16:28,182 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2023-11-29 02:16:28,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/data/772c258bb/899ccdf1a8244051ad01d588c7d43e7c/FLAG46a850880 [2023-11-29 02:16:28,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/data/772c258bb/899ccdf1a8244051ad01d588c7d43e7c [2023-11-29 02:16:28,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:16:28,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:16:28,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:28,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:16:28,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:16:28,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:28,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ff0abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28, skipping insertion in model container [2023-11-29 02:16:28,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:28,309 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:16:28,574 WARN L240 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_d54a49de-041c-44fc-95a7-295607420290/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2023-11-29 02:16:28,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:28,759 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:16:28,770 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-11-29 02:16:28,772 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2023-11-29 02:16:28,773 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [452] [2023-11-29 02:16:28,773 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [553] [2023-11-29 02:16:28,773 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] [2023-11-29 02:16:28,773 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [916] [2023-11-29 02:16:28,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1099] [2023-11-29 02:16:28,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1770] [2023-11-29 02:16:28,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1783] [2023-11-29 02:16:28,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1903] [2023-11-29 02:16:28,799 WARN L240 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_d54a49de-041c-44fc-95a7-295607420290/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2023-11-29 02:16:28,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:28,900 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:16:28,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28 WrapperNode [2023-11-29 02:16:28,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:28,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:16:28,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:16:28,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:16:28,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:28,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:28,982 INFO L138 Inliner]: procedures = 91, calls = 335, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 834 [2023-11-29 02:16:28,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:16:28,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:16:28,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:16:28,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:16:28,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:28,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:28,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,027 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-29 02:16:29,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:16:29,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:16:29,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:16:29,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:16:29,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (1/1) ... [2023-11-29 02:16:29,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:16:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:29,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:29,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:16:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-29 02:16:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-29 02:16:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:16:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-29 02:16:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-29 02:16:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-29 02:16:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-29 02:16:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 02:16:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 02:16:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 02:16:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 02:16:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 02:16:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 02:16:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 02:16:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 02:16:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 02:16:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 02:16:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-29 02:16:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-29 02:16:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 02:16:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 02:16:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 02:16:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 02:16:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 02:16:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 02:16:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 02:16:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 02:16:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 02:16:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 02:16:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 02:16:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 02:16:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 02:16:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 02:16:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 02:16:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 02:16:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 02:16:29,175 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 02:16:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:16:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:16:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:16:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:16:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:16:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 02:16:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 02:16:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 02:16:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 02:16:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 02:16:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 02:16:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 02:16:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 02:16:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 02:16:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 02:16:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 02:16:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 02:16:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 02:16:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 02:16:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 02:16:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 02:16:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 02:16:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 02:16:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 02:16:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 02:16:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 02:16:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:16:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:16:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 02:16:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 02:16:29,363 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:16:29,366 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:16:30,361 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:16:30,445 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:16:30,445 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:16:30,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:16:30 BoogieIcfgContainer [2023-11-29 02:16:30,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:16:30,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:16:30,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:16:30,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:16:30,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:16:28" (1/3) ... [2023-11-29 02:16:30,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1188bef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:16:30, skipping insertion in model container [2023-11-29 02:16:30,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:28" (2/3) ... [2023-11-29 02:16:30,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1188bef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:16:30, skipping insertion in model container [2023-11-29 02:16:30,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:16:30" (3/3) ... [2023-11-29 02:16:30,454 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2023-11-29 02:16:30,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:16:30,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:16:30,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:16:30,533 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@6d56724f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:16:30,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:16:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 527 states, 412 states have (on average 1.7427184466019416) internal successors, (718), 433 states have internal predecessors, (718), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-29 02:16:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 02:16:30,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:30,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-11-29 02:16:30,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:30,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1783266936, now seen corresponding path program 1 times [2023-11-29 02:16:30,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:30,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73970630] [2023-11-29 02:16:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:30,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:16:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:16:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:16:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:16:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:16:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 02:16:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:16:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73970630] [2023-11-29 02:16:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73970630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:16:32,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873847891] [2023-11-29 02:16:32,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:16:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:16:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:16:32,084 INFO L87 Difference]: Start difference. First operand has 527 states, 412 states have (on average 1.7427184466019416) internal successors, (718), 433 states have internal predecessors, (718), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 02:16:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:41,245 INFO L93 Difference]: Finished difference Result 1497 states and 2633 transitions. [2023-11-29 02:16:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:16:41,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-11-29 02:16:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:41,272 INFO L225 Difference]: With dead ends: 1497 [2023-11-29 02:16:41,273 INFO L226 Difference]: Without dead ends: 970 [2023-11-29 02:16:41,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:16:41,289 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2215 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 4558 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:41,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 2372 Invalid, 5409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [851 Valid, 4558 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 02:16:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-29 02:16:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 525. [2023-11-29 02:16:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 412 states have (on average 1.7281553398058251) internal successors, (712), 431 states have internal predecessors, (712), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-29 02:16:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 889 transitions. [2023-11-29 02:16:41,582 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 889 transitions. Word has length 87 [2023-11-29 02:16:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:41,582 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 889 transitions. [2023-11-29 02:16:41,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 02:16:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 889 transitions. [2023-11-29 02:16:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 02:16:41,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:41,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2023-11-29 02:16:41,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:16:41,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:41,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:41,591 INFO L85 PathProgramCache]: Analyzing trace with hash -20505094, now seen corresponding path program 1 times [2023-11-29 02:16:41,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:41,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525656841] [2023-11-29 02:16:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:41,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:16:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 02:16:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:16:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:16:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:16:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:16:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525656841] [2023-11-29 02:16:42,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525656841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:42,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:42,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:16:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588918570] [2023-11-29 02:16:42,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:42,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:16:42,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:16:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:16:42,520 INFO L87 Difference]: Start difference. First operand 525 states and 889 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 02:16:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:50,888 INFO L93 Difference]: Finished difference Result 1333 states and 2299 transitions. [2023-11-29 02:16:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:16:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2023-11-29 02:16:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:50,897 INFO L225 Difference]: With dead ends: 1333 [2023-11-29 02:16:50,897 INFO L226 Difference]: Without dead ends: 811 [2023-11-29 02:16:50,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:16:50,903 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1417 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 5648 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 5648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:50,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2995 Invalid, 6011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [363 Valid, 5648 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 02:16:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-11-29 02:16:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 529. [2023-11-29 02:16:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 415 states have (on average 1.7204819277108434) internal successors, (714), 434 states have internal predecessors, (714), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (88), 85 states have call predecessors, (88), 86 states have call successors, (88) [2023-11-29 02:16:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 893 transitions. [2023-11-29 02:16:51,029 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 893 transitions. Word has length 93 [2023-11-29 02:16:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:51,029 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 893 transitions. [2023-11-29 02:16:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 02:16:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 893 transitions. [2023-11-29 02:16:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 02:16:51,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:51,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2023-11-29 02:16:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:16:51,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:51,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash -255668322, now seen corresponding path program 1 times [2023-11-29 02:16:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536526623] [2023-11-29 02:16:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:51,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 02:16:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:16:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:16:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:16:51,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:51,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536526623] [2023-11-29 02:16:51,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536526623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:51,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651332773] [2023-11-29 02:16:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:51,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:51,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:51,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:51,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:16:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:52,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:16:52,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:16:52,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:16:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651332773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:52,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-11-29 02:16:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040496603] [2023-11-29 02:16:52,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:16:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:16:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:16:52,369 INFO L87 Difference]: Start difference. First operand 529 states and 893 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 02:16:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:52,776 INFO L93 Difference]: Finished difference Result 1389 states and 2366 transitions. [2023-11-29 02:16:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:16:52,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2023-11-29 02:16:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:52,786 INFO L225 Difference]: With dead ends: 1389 [2023-11-29 02:16:52,786 INFO L226 Difference]: Without dead ends: 938 [2023-11-29 02:16:52,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:16:52,791 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 814 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:52,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1606 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:16:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-11-29 02:16:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 923. [2023-11-29 02:16:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 721 states have (on average 1.6920943134535367) internal successors, (1220), 754 states have internal predecessors, (1220), 162 states have call successors, (162), 38 states have call predecessors, (162), 39 states have return successors, (174), 156 states have call predecessors, (174), 157 states have call successors, (174) [2023-11-29 02:16:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1556 transitions. [2023-11-29 02:16:53,077 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1556 transitions. Word has length 99 [2023-11-29 02:16:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:53,078 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1556 transitions. [2023-11-29 02:16:53,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 02:16:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1556 transitions. [2023-11-29 02:16:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 02:16:53,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:53,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2023-11-29 02:16:53,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:53,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:53,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:53,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1735646369, now seen corresponding path program 1 times [2023-11-29 02:16:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:53,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713849956] [2023-11-29 02:16:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:53,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 02:16:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:16:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:16:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:16:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713849956] [2023-11-29 02:16:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713849956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080276033] [2023-11-29 02:16:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:54,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:54,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:54,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:16:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:54,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:16:54,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:16:54,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:16:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080276033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:54,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:54,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-11-29 02:16:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028246079] [2023-11-29 02:16:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:54,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:16:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:16:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:16:54,521 INFO L87 Difference]: Start difference. First operand 923 states and 1556 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:16:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:55,143 INFO L93 Difference]: Finished difference Result 2533 states and 4311 transitions. [2023-11-29 02:16:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:16:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2023-11-29 02:16:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:55,161 INFO L225 Difference]: With dead ends: 2533 [2023-11-29 02:16:55,161 INFO L226 Difference]: Without dead ends: 1688 [2023-11-29 02:16:55,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:16:55,169 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 874 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:55,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1442 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:16:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-11-29 02:16:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1673. [2023-11-29 02:16:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1300 states have (on average 1.6815384615384616) internal successors, (2186), 1360 states have internal predecessors, (2186), 301 states have call successors, (301), 70 states have call predecessors, (301), 71 states have return successors, (351), 293 states have call predecessors, (351), 296 states have call successors, (351) [2023-11-29 02:16:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2838 transitions. [2023-11-29 02:16:55,578 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2838 transitions. Word has length 103 [2023-11-29 02:16:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:55,578 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2838 transitions. [2023-11-29 02:16:55,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:16:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2838 transitions. [2023-11-29 02:16:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 02:16:55,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:55,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2023-11-29 02:16:55,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:16:55,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:55,782 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:55,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2113142343, now seen corresponding path program 1 times [2023-11-29 02:16:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:55,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837541071] [2023-11-29 02:16:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 02:16:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:16:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:16:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:16:56,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:56,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837541071] [2023-11-29 02:16:56,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837541071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699098408] [2023-11-29 02:16:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:56,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:56,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:56,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:56,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:16:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:57,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:16:57,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:16:57,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:16:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699098408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 02:16:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579181743] [2023-11-29 02:16:57,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:57,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:16:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:16:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:16:57,088 INFO L87 Difference]: Start difference. First operand 1673 states and 2838 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:16:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:57,576 INFO L93 Difference]: Finished difference Result 3350 states and 5683 transitions. [2023-11-29 02:16:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:16:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-11-29 02:16:57,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:57,595 INFO L225 Difference]: With dead ends: 3350 [2023-11-29 02:16:57,595 INFO L226 Difference]: Without dead ends: 1682 [2023-11-29 02:16:57,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:16:57,609 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 20 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:57,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2576 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:16:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-11-29 02:16:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1682. [2023-11-29 02:16:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1308 states have (on average 1.680428134556575) internal successors, (2198), 1368 states have internal predecessors, (2198), 301 states have call successors, (301), 71 states have call predecessors, (301), 72 states have return successors, (351), 293 states have call predecessors, (351), 296 states have call successors, (351) [2023-11-29 02:16:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2850 transitions. [2023-11-29 02:16:58,004 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2850 transitions. Word has length 106 [2023-11-29 02:16:58,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:58,005 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 2850 transitions. [2023-11-29 02:16:58,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:16:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2850 transitions. [2023-11-29 02:16:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 02:16:58,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:58,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1] [2023-11-29 02:16:58,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:16:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:58,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:58,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1939288130, now seen corresponding path program 1 times [2023-11-29 02:16:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:58,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279758376] [2023-11-29 02:16:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:58,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:16:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 02:16:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 02:16:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:16:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:59,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:16:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:16:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:16:59,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279758376] [2023-11-29 02:16:59,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279758376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971825182] [2023-11-29 02:16:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:59,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:59,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:59,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:16:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:59,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:16:59,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:16:59,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:16:59,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971825182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:59,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:59,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 02:16:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681019795] [2023-11-29 02:16:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:59,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:16:59,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:16:59,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:16:59,522 INFO L87 Difference]: Start difference. First operand 1682 states and 2850 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:16:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:59,920 INFO L93 Difference]: Finished difference Result 3352 states and 5684 transitions. [2023-11-29 02:16:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:16:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-11-29 02:16:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:59,931 INFO L225 Difference]: With dead ends: 3352 [2023-11-29 02:16:59,931 INFO L226 Difference]: Without dead ends: 1682 [2023-11-29 02:16:59,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:16:59,937 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 18 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:59,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2576 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:16:59,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-11-29 02:17:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1682. [2023-11-29 02:17:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1308 states have (on average 1.679663608562691) internal successors, (2197), 1368 states have internal predecessors, (2197), 301 states have call successors, (301), 71 states have call predecessors, (301), 72 states have return successors, (351), 293 states have call predecessors, (351), 296 states have call successors, (351) [2023-11-29 02:17:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2849 transitions. [2023-11-29 02:17:00,354 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2849 transitions. Word has length 107 [2023-11-29 02:17:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:00,354 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 2849 transitions. [2023-11-29 02:17:00,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2849 transitions. [2023-11-29 02:17:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 02:17:00,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:00,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2023-11-29 02:17:00,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:17:00,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:17:00,558 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:00,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1766546851, now seen corresponding path program 1 times [2023-11-29 02:17:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:00,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534344611] [2023-11-29 02:17:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:17:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:17:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:00,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 02:17:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:17:01,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534344611] [2023-11-29 02:17:01,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534344611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:01,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094453518] [2023-11-29 02:17:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:01,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:01,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:01,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:01,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:17:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:01,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:01,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:17:01,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094453518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:01,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 02:17:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537526766] [2023-11-29 02:17:01,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:17:01,856 INFO L87 Difference]: Start difference. First operand 1682 states and 2849 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:02,313 INFO L93 Difference]: Finished difference Result 3352 states and 5683 transitions. [2023-11-29 02:17:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:17:02,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-11-29 02:17:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:02,329 INFO L225 Difference]: With dead ends: 3352 [2023-11-29 02:17:02,329 INFO L226 Difference]: Without dead ends: 1682 [2023-11-29 02:17:02,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:17:02,338 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 17 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:02,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2576 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-11-29 02:17:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1682. [2023-11-29 02:17:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1308 states have (on average 1.6788990825688073) internal successors, (2196), 1368 states have internal predecessors, (2196), 301 states have call successors, (301), 71 states have call predecessors, (301), 72 states have return successors, (351), 293 states have call predecessors, (351), 296 states have call successors, (351) [2023-11-29 02:17:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2848 transitions. [2023-11-29 02:17:02,692 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2848 transitions. Word has length 108 [2023-11-29 02:17:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:02,692 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 2848 transitions. [2023-11-29 02:17:02,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:02,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2848 transitions. [2023-11-29 02:17:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 02:17:02,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:02,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1] [2023-11-29 02:17:02,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:17:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:17:02,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:02,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1165475034, now seen corresponding path program 1 times [2023-11-29 02:17:02,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:02,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470782601] [2023-11-29 02:17:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:02,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 02:17:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:17:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:17:03,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:03,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470782601] [2023-11-29 02:17:03,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470782601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:03,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568990383] [2023-11-29 02:17:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:03,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:03,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:03,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:03,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:17:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:04,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:17:04,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:04,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568990383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:04,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:04,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 02:17:04,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136463502] [2023-11-29 02:17:04,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:04,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:17:04,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:17:04,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:17:04,129 INFO L87 Difference]: Start difference. First operand 1682 states and 2848 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:04,598 INFO L93 Difference]: Finished difference Result 3370 states and 5712 transitions. [2023-11-29 02:17:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:17:04,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2023-11-29 02:17:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:04,608 INFO L225 Difference]: With dead ends: 3370 [2023-11-29 02:17:04,608 INFO L226 Difference]: Without dead ends: 1704 [2023-11-29 02:17:04,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:17:04,614 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 146 mSDsluCounter, 4204 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5066 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:04,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 5066 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2023-11-29 02:17:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1700. [2023-11-29 02:17:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1323 states have (on average 1.6787603930461072) internal successors, (2221), 1385 states have internal predecessors, (2221), 302 states have call successors, (302), 71 states have call predecessors, (302), 74 states have return successors, (355), 294 states have call predecessors, (355), 297 states have call successors, (355) [2023-11-29 02:17:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2878 transitions. [2023-11-29 02:17:05,113 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2878 transitions. Word has length 109 [2023-11-29 02:17:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:05,114 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2878 transitions. [2023-11-29 02:17:05,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2878 transitions. [2023-11-29 02:17:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 02:17:05,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:05,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1] [2023-11-29 02:17:05,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:17:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 02:17:05,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:05,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash 212273401, now seen corresponding path program 1 times [2023-11-29 02:17:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:05,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130838699] [2023-11-29 02:17:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 02:17:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:17:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:17:05,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130838699] [2023-11-29 02:17:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130838699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743318245] [2023-11-29 02:17:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:05,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:05,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:05,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:05,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:17:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:06,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:06,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:06,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:06,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743318245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:06,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:06,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:17:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190153407] [2023-11-29 02:17:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:06,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:17:06,271 INFO L87 Difference]: Start difference. First operand 1700 states and 2878 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:06,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:06,681 INFO L93 Difference]: Finished difference Result 3408 states and 5783 transitions. [2023-11-29 02:17:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:17:06,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-11-29 02:17:06,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:06,694 INFO L225 Difference]: With dead ends: 3408 [2023-11-29 02:17:06,694 INFO L226 Difference]: Without dead ends: 1700 [2023-11-29 02:17:06,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:06,701 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 133 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:06,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2395 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-11-29 02:17:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1700. [2023-11-29 02:17:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1323 states have (on average 1.6749811035525322) internal successors, (2216), 1385 states have internal predecessors, (2216), 302 states have call successors, (302), 71 states have call predecessors, (302), 74 states have return successors, (355), 294 states have call predecessors, (355), 297 states have call successors, (355) [2023-11-29 02:17:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2873 transitions. [2023-11-29 02:17:07,019 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2873 transitions. Word has length 109 [2023-11-29 02:17:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:07,019 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2873 transitions. [2023-11-29 02:17:07,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2873 transitions. [2023-11-29 02:17:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 02:17:07,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:07,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1] [2023-11-29 02:17:07,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:17:07,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:07,224 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:07,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:07,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2086367835, now seen corresponding path program 1 times [2023-11-29 02:17:07,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:07,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597643036] [2023-11-29 02:17:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:17:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:17:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:17:07,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:07,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597643036] [2023-11-29 02:17:07,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597643036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:07,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947742222] [2023-11-29 02:17:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:07,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:07,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:07,894 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:07,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:17:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:08,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:08,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:08,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947742222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:08,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:17:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133350320] [2023-11-29 02:17:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:08,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:08,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:17:08,239 INFO L87 Difference]: Start difference. First operand 1700 states and 2873 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:08,666 INFO L93 Difference]: Finished difference Result 3408 states and 5773 transitions. [2023-11-29 02:17:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:17:08,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-11-29 02:17:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:08,677 INFO L225 Difference]: With dead ends: 3408 [2023-11-29 02:17:08,677 INFO L226 Difference]: Without dead ends: 1700 [2023-11-29 02:17:08,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:08,683 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 127 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:08,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2395 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-11-29 02:17:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1700. [2023-11-29 02:17:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1323 states have (on average 1.6712018140589568) internal successors, (2211), 1385 states have internal predecessors, (2211), 302 states have call successors, (302), 71 states have call predecessors, (302), 74 states have return successors, (355), 294 states have call predecessors, (355), 297 states have call successors, (355) [2023-11-29 02:17:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2868 transitions. [2023-11-29 02:17:09,009 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2868 transitions. Word has length 111 [2023-11-29 02:17:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:09,009 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2868 transitions. [2023-11-29 02:17:09,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2868 transitions. [2023-11-29 02:17:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 02:17:09,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:09,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1] [2023-11-29 02:17:09,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:17:09,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:17:09,216 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:09,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1764192835, now seen corresponding path program 1 times [2023-11-29 02:17:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:09,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759820033] [2023-11-29 02:17:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 02:17:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 02:17:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:17:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759820033] [2023-11-29 02:17:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759820033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975992580] [2023-11-29 02:17:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:09,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:09,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:09,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:09,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:17:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:10,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:10,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:10,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:10,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975992580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:10,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:17:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910500007] [2023-11-29 02:17:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:10,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:17:10,073 INFO L87 Difference]: Start difference. First operand 1700 states and 2868 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:10,525 INFO L93 Difference]: Finished difference Result 3444 states and 5821 transitions. [2023-11-29 02:17:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:17:10,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-11-29 02:17:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:10,536 INFO L225 Difference]: With dead ends: 3444 [2023-11-29 02:17:10,536 INFO L226 Difference]: Without dead ends: 1764 [2023-11-29 02:17:10,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:10,542 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 177 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:10,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2405 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-11-29 02:17:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1750. [2023-11-29 02:17:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1372 states have (on average 1.6727405247813412) internal successors, (2295), 1434 states have internal predecessors, (2295), 302 states have call successors, (302), 72 states have call predecessors, (302), 75 states have return successors, (354), 294 states have call predecessors, (354), 297 states have call successors, (354) [2023-11-29 02:17:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2951 transitions. [2023-11-29 02:17:10,905 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2951 transitions. Word has length 113 [2023-11-29 02:17:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:10,906 INFO L495 AbstractCegarLoop]: Abstraction has 1750 states and 2951 transitions. [2023-11-29 02:17:10,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2951 transitions. [2023-11-29 02:17:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 02:17:10,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:10,910 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:10,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:17:11,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:11,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:11,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash -638955193, now seen corresponding path program 1 times [2023-11-29 02:17:11,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:11,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520642462] [2023-11-29 02:17:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:11,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:17:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 02:17:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520642462] [2023-11-29 02:17:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520642462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261246879] [2023-11-29 02:17:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:11,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:11,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:11,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:11,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:17:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:12,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:17:12,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:12,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:12,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:12,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261246879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:12,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:12,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-29 02:17:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994594555] [2023-11-29 02:17:12,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:12,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:17:12,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:12,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:17:12,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:17:12,158 INFO L87 Difference]: Start difference. First operand 1750 states and 2951 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:12,739 INFO L93 Difference]: Finished difference Result 3436 states and 5801 transitions. [2023-11-29 02:17:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:17:12,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2023-11-29 02:17:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:12,750 INFO L225 Difference]: With dead ends: 3436 [2023-11-29 02:17:12,750 INFO L226 Difference]: Without dead ends: 1770 [2023-11-29 02:17:12,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:17:12,756 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 171 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5796 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:12,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5796 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2023-11-29 02:17:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1750. [2023-11-29 02:17:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1372 states have (on average 1.6727405247813412) internal successors, (2295), 1434 states have internal predecessors, (2295), 302 states have call successors, (302), 72 states have call predecessors, (302), 75 states have return successors, (354), 294 states have call predecessors, (354), 297 states have call successors, (354) [2023-11-29 02:17:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2951 transitions. [2023-11-29 02:17:13,139 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2951 transitions. Word has length 114 [2023-11-29 02:17:13,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:13,139 INFO L495 AbstractCegarLoop]: Abstraction has 1750 states and 2951 transitions. [2023-11-29 02:17:13,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2951 transitions. [2023-11-29 02:17:13,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 02:17:13,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:13,141 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:13,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:17:13,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:13,342 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:13,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:13,342 INFO L85 PathProgramCache]: Analyzing trace with hash -30973913, now seen corresponding path program 1 times [2023-11-29 02:17:13,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:13,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919682197] [2023-11-29 02:17:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:17:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:17:13,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919682197] [2023-11-29 02:17:13,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919682197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898869248] [2023-11-29 02:17:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:13,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:13,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:13,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:17:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:14,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:14,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:14,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898869248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:17:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216445783] [2023-11-29 02:17:14,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:17:14,282 INFO L87 Difference]: Start difference. First operand 1750 states and 2951 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:14,722 INFO L93 Difference]: Finished difference Result 3444 states and 5819 transitions. [2023-11-29 02:17:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:17:14,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-11-29 02:17:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:14,732 INFO L225 Difference]: With dead ends: 3444 [2023-11-29 02:17:14,733 INFO L226 Difference]: Without dead ends: 1750 [2023-11-29 02:17:14,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:14,739 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 171 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:14,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2405 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2023-11-29 02:17:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1750. [2023-11-29 02:17:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1372 states have (on average 1.6690962099125364) internal successors, (2290), 1434 states have internal predecessors, (2290), 302 states have call successors, (302), 72 states have call predecessors, (302), 75 states have return successors, (354), 294 states have call predecessors, (354), 297 states have call successors, (354) [2023-11-29 02:17:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2946 transitions. [2023-11-29 02:17:15,064 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2946 transitions. Word has length 114 [2023-11-29 02:17:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:15,064 INFO L495 AbstractCegarLoop]: Abstraction has 1750 states and 2946 transitions. [2023-11-29 02:17:15,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:15,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2946 transitions. [2023-11-29 02:17:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 02:17:15,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:15,066 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:15,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 02:17:15,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:15,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:15,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash 491831432, now seen corresponding path program 1 times [2023-11-29 02:17:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:15,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160509494] [2023-11-29 02:17:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:17:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:17:15,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:15,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160509494] [2023-11-29 02:17:15,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160509494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:15,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450642423] [2023-11-29 02:17:15,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:15,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:15,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:15,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:15,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:17:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:16,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:17:16,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:17:16,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:16,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450642423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:16,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:16,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 02:17:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595106241] [2023-11-29 02:17:16,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:16,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:17:16,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:17:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:17:16,288 INFO L87 Difference]: Start difference. First operand 1750 states and 2946 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:16,750 INFO L93 Difference]: Finished difference Result 3372 states and 5694 transitions. [2023-11-29 02:17:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:17:16,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2023-11-29 02:17:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:16,762 INFO L225 Difference]: With dead ends: 3372 [2023-11-29 02:17:16,762 INFO L226 Difference]: Without dead ends: 1772 [2023-11-29 02:17:16,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:17:16,768 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 132 mSDsluCounter, 4171 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 5025 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:16,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 5025 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2023-11-29 02:17:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1768. [2023-11-29 02:17:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1387 states have (on average 1.669069935111752) internal successors, (2315), 1451 states have internal predecessors, (2315), 303 states have call successors, (303), 72 states have call predecessors, (303), 77 states have return successors, (357), 295 states have call predecessors, (357), 298 states have call successors, (357) [2023-11-29 02:17:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2975 transitions. [2023-11-29 02:17:17,162 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2975 transitions. Word has length 114 [2023-11-29 02:17:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:17,162 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2975 transitions. [2023-11-29 02:17:17,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2975 transitions. [2023-11-29 02:17:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:17:17,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:17,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:17,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:17:17,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:17:17,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:17,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2030515547, now seen corresponding path program 1 times [2023-11-29 02:17:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:17,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921887822] [2023-11-29 02:17:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:17,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 02:17:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:17:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:18,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921887822] [2023-11-29 02:17:18,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921887822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:18,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654483643] [2023-11-29 02:17:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:18,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:18,034 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:18,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:17:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:18,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:17:18,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:17:18,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:18,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654483643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:18,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:18,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 02:17:18,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800031685] [2023-11-29 02:17:18,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:18,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:17:18,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:17:18,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:17:18,368 INFO L87 Difference]: Start difference. First operand 1768 states and 2975 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:18,831 INFO L93 Difference]: Finished difference Result 3400 states and 5743 transitions. [2023-11-29 02:17:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:17:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2023-11-29 02:17:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:18,843 INFO L225 Difference]: With dead ends: 3400 [2023-11-29 02:17:18,843 INFO L226 Difference]: Without dead ends: 1800 [2023-11-29 02:17:18,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:17:18,848 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 141 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 5015 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:18,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 5015 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2023-11-29 02:17:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1768. [2023-11-29 02:17:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1387 states have (on average 1.669069935111752) internal successors, (2315), 1451 states have internal predecessors, (2315), 303 states have call successors, (303), 72 states have call predecessors, (303), 77 states have return successors, (357), 295 states have call predecessors, (357), 298 states have call successors, (357) [2023-11-29 02:17:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2975 transitions. [2023-11-29 02:17:19,156 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2975 transitions. Word has length 115 [2023-11-29 02:17:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:19,156 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2975 transitions. [2023-11-29 02:17:19,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2975 transitions. [2023-11-29 02:17:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:17:19,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:19,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2023-11-29 02:17:19,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:17:19,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:17:19,360 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:19,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash -744427045, now seen corresponding path program 1 times [2023-11-29 02:17:19,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:19,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670864267] [2023-11-29 02:17:19,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:19,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 02:17:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:17:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:20,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670864267] [2023-11-29 02:17:20,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670864267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:20,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681283320] [2023-11-29 02:17:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:20,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:20,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:20,003 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:20,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:17:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:20,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:17:20,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:17:20,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:20,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681283320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:20,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:20,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-29 02:17:20,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157111697] [2023-11-29 02:17:20,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:20,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:17:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:17:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:17:20,356 INFO L87 Difference]: Start difference. First operand 1768 states and 2975 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:20,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:20,836 INFO L93 Difference]: Finished difference Result 3386 states and 5718 transitions. [2023-11-29 02:17:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:17:20,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2023-11-29 02:17:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:20,847 INFO L225 Difference]: With dead ends: 3386 [2023-11-29 02:17:20,847 INFO L226 Difference]: Without dead ends: 1786 [2023-11-29 02:17:20,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:17:20,851 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 171 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5804 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:20,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5804 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2023-11-29 02:17:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1768. [2023-11-29 02:17:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1387 states have (on average 1.669069935111752) internal successors, (2315), 1451 states have internal predecessors, (2315), 303 states have call successors, (303), 72 states have call predecessors, (303), 77 states have return successors, (357), 295 states have call predecessors, (357), 298 states have call successors, (357) [2023-11-29 02:17:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2975 transitions. [2023-11-29 02:17:21,159 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2975 transitions. Word has length 115 [2023-11-29 02:17:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:21,159 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2975 transitions. [2023-11-29 02:17:21,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2975 transitions. [2023-11-29 02:17:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:17:21,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:21,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:21,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:17:21,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:17:21,362 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:21,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 77546467, now seen corresponding path program 1 times [2023-11-29 02:17:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706235660] [2023-11-29 02:17:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:17:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 02:17:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:17:21,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:21,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706235660] [2023-11-29 02:17:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706235660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374182375] [2023-11-29 02:17:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:21,928 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:21,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:17:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:22,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:22,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:17:22,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374182375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:22,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:22,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 02:17:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543563209] [2023-11-29 02:17:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:22,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:17:22,231 INFO L87 Difference]: Start difference. First operand 1768 states and 2975 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:22,615 INFO L93 Difference]: Finished difference Result 3438 states and 5803 transitions. [2023-11-29 02:17:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:17:22,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2023-11-29 02:17:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:22,624 INFO L225 Difference]: With dead ends: 3438 [2023-11-29 02:17:22,624 INFO L226 Difference]: Without dead ends: 1768 [2023-11-29 02:17:22,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:17:22,629 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 23 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:22,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2545 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:17:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2023-11-29 02:17:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1768. [2023-11-29 02:17:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1387 states have (on average 1.6661860129776496) internal successors, (2311), 1451 states have internal predecessors, (2311), 303 states have call successors, (303), 72 states have call predecessors, (303), 77 states have return successors, (357), 295 states have call predecessors, (357), 298 states have call successors, (357) [2023-11-29 02:17:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2971 transitions. [2023-11-29 02:17:22,920 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2971 transitions. Word has length 115 [2023-11-29 02:17:22,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:22,921 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2971 transitions. [2023-11-29 02:17:22,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2971 transitions. [2023-11-29 02:17:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 02:17:22,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:22,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:22,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:17:23,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:17:23,124 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:23,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1271512576, now seen corresponding path program 1 times [2023-11-29 02:17:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:23,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420244294] [2023-11-29 02:17:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:17:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:17:23,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:23,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420244294] [2023-11-29 02:17:23,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420244294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786921432] [2023-11-29 02:17:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:23,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:23,734 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:23,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:17:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:24,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:17:24,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:17:24,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:24,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786921432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:24,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:24,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-29 02:17:24,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626176994] [2023-11-29 02:17:24,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:24,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:17:24,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:24,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:17:24,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:17:24,115 INFO L87 Difference]: Start difference. First operand 1768 states and 2971 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:24,628 INFO L93 Difference]: Finished difference Result 3386 states and 5715 transitions. [2023-11-29 02:17:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:17:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2023-11-29 02:17:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:24,637 INFO L225 Difference]: With dead ends: 3386 [2023-11-29 02:17:24,637 INFO L226 Difference]: Without dead ends: 1786 [2023-11-29 02:17:24,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:17:24,642 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 179 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 5760 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:24,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 5760 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2023-11-29 02:17:24,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1768. [2023-11-29 02:17:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1387 states have (on average 1.6661860129776496) internal successors, (2311), 1451 states have internal predecessors, (2311), 303 states have call successors, (303), 72 states have call predecessors, (303), 77 states have return successors, (357), 295 states have call predecessors, (357), 298 states have call successors, (357) [2023-11-29 02:17:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2971 transitions. [2023-11-29 02:17:24,962 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2971 transitions. Word has length 116 [2023-11-29 02:17:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:24,962 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2971 transitions. [2023-11-29 02:17:24,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2971 transitions. [2023-11-29 02:17:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 02:17:24,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:24,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:24,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:17:25,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:17:25,166 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:25,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1795706496, now seen corresponding path program 1 times [2023-11-29 02:17:25,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:25,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25453403] [2023-11-29 02:17:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:25,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 02:17:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:17:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25453403] [2023-11-29 02:17:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25453403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:25,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745203633] [2023-11-29 02:17:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:25,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:25,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:25,834 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:25,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:17:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:26,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:17:26,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:17:26,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745203633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:26,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:26,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 02:17:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779645046] [2023-11-29 02:17:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:26,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:17:26,163 INFO L87 Difference]: Start difference. First operand 1768 states and 2971 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:26,531 INFO L93 Difference]: Finished difference Result 3484 states and 5873 transitions. [2023-11-29 02:17:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:17:26,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2023-11-29 02:17:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:26,539 INFO L225 Difference]: With dead ends: 3484 [2023-11-29 02:17:26,539 INFO L226 Difference]: Without dead ends: 1796 [2023-11-29 02:17:26,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:17:26,544 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 14 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:26,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2524 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-11-29 02:17:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1792. [2023-11-29 02:17:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1411 states have (on average 1.6576895818568391) internal successors, (2339), 1475 states have internal predecessors, (2339), 303 states have call successors, (303), 72 states have call predecessors, (303), 77 states have return successors, (357), 295 states have call predecessors, (357), 298 states have call successors, (357) [2023-11-29 02:17:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2999 transitions. [2023-11-29 02:17:26,983 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2999 transitions. Word has length 117 [2023-11-29 02:17:26,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:26,983 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2999 transitions. [2023-11-29 02:17:26,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2999 transitions. [2023-11-29 02:17:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 02:17:26,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:26,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:26,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:17:27,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:27,186 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:27,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:27,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1384885278, now seen corresponding path program 1 times [2023-11-29 02:17:27,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:27,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292695493] [2023-11-29 02:17:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:27,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 02:17:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:17:27,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:27,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292695493] [2023-11-29 02:17:27,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292695493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:27,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105339666] [2023-11-29 02:17:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:27,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:27,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:27,857 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:27,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:17:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:28,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:17:28,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:17:28,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105339666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:28,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:28,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-29 02:17:28,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733943407] [2023-11-29 02:17:28,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:28,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:17:28,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:17:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:17:28,312 INFO L87 Difference]: Start difference. First operand 1792 states and 2999 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 02:17:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:32,088 INFO L93 Difference]: Finished difference Result 5584 states and 9533 transitions. [2023-11-29 02:17:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:17:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2023-11-29 02:17:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:32,105 INFO L225 Difference]: With dead ends: 5584 [2023-11-29 02:17:32,105 INFO L226 Difference]: Without dead ends: 3989 [2023-11-29 02:17:32,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:17:32,111 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 2872 mSDsluCounter, 3223 mSDsCounter, 0 mSdLazyCounter, 5901 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 4142 SdHoareTripleChecker+Invalid, 6580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 5901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:32,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2996 Valid, 4142 Invalid, 6580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 5901 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 02:17:32,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2023-11-29 02:17:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3950. [2023-11-29 02:17:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3950 states, 3019 states have (on average 1.6495528320635973) internal successors, (4980), 3166 states have internal predecessors, (4980), 761 states have call successors, (761), 140 states have call predecessors, (761), 169 states have return successors, (964), 765 states have call predecessors, (964), 756 states have call successors, (964) [2023-11-29 02:17:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 6705 transitions. [2023-11-29 02:17:32,843 INFO L78 Accepts]: Start accepts. Automaton has 3950 states and 6705 transitions. Word has length 117 [2023-11-29 02:17:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:32,843 INFO L495 AbstractCegarLoop]: Abstraction has 3950 states and 6705 transitions. [2023-11-29 02:17:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 02:17:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3950 states and 6705 transitions. [2023-11-29 02:17:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 02:17:32,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:32,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:32,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:17:33,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:33,047 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:33,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1484612711, now seen corresponding path program 1 times [2023-11-29 02:17:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:33,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598717729] [2023-11-29 02:17:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:17:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 02:17:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:17:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 02:17:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:17:33,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:33,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598717729] [2023-11-29 02:17:33,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598717729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:33,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249728191] [2023-11-29 02:17:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:33,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:33,657 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:33,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:17:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:33,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:17:33,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 02:17:33,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:33,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249728191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:33,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:33,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 02:17:33,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156162707] [2023-11-29 02:17:33,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:33,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:17:33,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:17:33,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:17:33,983 INFO L87 Difference]: Start difference. First operand 3950 states and 6705 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:35,824 INFO L93 Difference]: Finished difference Result 11043 states and 19066 transitions. [2023-11-29 02:17:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:17:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2023-11-29 02:17:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:35,852 INFO L225 Difference]: With dead ends: 11043 [2023-11-29 02:17:35,852 INFO L226 Difference]: Without dead ends: 7384 [2023-11-29 02:17:35,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:17:35,863 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 712 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 4792 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:35,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 4792 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:17:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2023-11-29 02:17:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 7353. [2023-11-29 02:17:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7353 states, 5562 states have (on average 1.6553398058252426) internal successors, (9207), 5840 states have internal predecessors, (9207), 1461 states have call successors, (1461), 284 states have call predecessors, (1461), 329 states have return successors, (1808), 1470 states have call predecessors, (1808), 1456 states have call successors, (1808) [2023-11-29 02:17:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7353 states to 7353 states and 12476 transitions. [2023-11-29 02:17:37,363 INFO L78 Accepts]: Start accepts. Automaton has 7353 states and 12476 transitions. Word has length 118 [2023-11-29 02:17:37,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:37,363 INFO L495 AbstractCegarLoop]: Abstraction has 7353 states and 12476 transitions. [2023-11-29 02:17:37,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7353 states and 12476 transitions. [2023-11-29 02:17:37,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:17:37,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:37,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:37,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:17:37,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 02:17:37,571 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:37,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1298114308, now seen corresponding path program 1 times [2023-11-29 02:17:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471627814] [2023-11-29 02:17:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:37,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:37,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:37,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:17:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:37,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:17:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:17:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471627814] [2023-11-29 02:17:38,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471627814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916357283] [2023-11-29 02:17:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:38,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:38,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:38,219 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:38,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:17:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:38,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:17:38,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:17:38,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:38,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916357283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:38,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:38,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:17:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142134634] [2023-11-29 02:17:38,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:38,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:17:38,523 INFO L87 Difference]: Start difference. First operand 7353 states and 12476 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:40,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:40,041 INFO L93 Difference]: Finished difference Result 14558 states and 24747 transitions. [2023-11-29 02:17:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:17:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-11-29 02:17:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:40,074 INFO L225 Difference]: With dead ends: 14558 [2023-11-29 02:17:40,074 INFO L226 Difference]: Without dead ends: 7395 [2023-11-29 02:17:40,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:40,087 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 14 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:40,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2523 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2023-11-29 02:17:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 7371. [2023-11-29 02:17:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7371 states, 5580 states have (on average 1.6553763440860214) internal successors, (9237), 5858 states have internal predecessors, (9237), 1461 states have call successors, (1461), 284 states have call predecessors, (1461), 329 states have return successors, (1808), 1470 states have call predecessors, (1808), 1456 states have call successors, (1808) [2023-11-29 02:17:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7371 states to 7371 states and 12506 transitions. [2023-11-29 02:17:41,530 INFO L78 Accepts]: Start accepts. Automaton has 7371 states and 12506 transitions. Word has length 120 [2023-11-29 02:17:41,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:41,531 INFO L495 AbstractCegarLoop]: Abstraction has 7371 states and 12506 transitions. [2023-11-29 02:17:41,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 02:17:41,531 INFO L276 IsEmpty]: Start isEmpty. Operand 7371 states and 12506 transitions. [2023-11-29 02:17:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:17:41,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:41,537 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:41,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:17:41,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 02:17:41,737 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:41,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1772625586, now seen corresponding path program 1 times [2023-11-29 02:17:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708795170] [2023-11-29 02:17:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:41,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:17:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:17:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:17:42,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708795170] [2023-11-29 02:17:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708795170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339020121] [2023-11-29 02:17:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:42,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:42,330 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:42,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:17:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:42,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:17:42,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:17:42,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:42,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339020121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:42,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:42,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-29 02:17:42,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630698880] [2023-11-29 02:17:42,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:42,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:17:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:42,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:17:42,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:17:42,693 INFO L87 Difference]: Start difference. First operand 7371 states and 12506 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:44,496 INFO L93 Difference]: Finished difference Result 14493 states and 24635 transitions. [2023-11-29 02:17:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:17:44,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-11-29 02:17:44,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:44,526 INFO L225 Difference]: With dead ends: 14493 [2023-11-29 02:17:44,526 INFO L226 Difference]: Without dead ends: 7434 [2023-11-29 02:17:44,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:17:44,542 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 147 mSDsluCounter, 4942 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 5780 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:44,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 5780 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7434 states. [2023-11-29 02:17:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7434 to 7373. [2023-11-29 02:17:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7373 states, 5581 states have (on average 1.6550797348145494) internal successors, (9237), 5860 states have internal predecessors, (9237), 1461 states have call successors, (1461), 284 states have call predecessors, (1461), 330 states have return successors, (1809), 1470 states have call predecessors, (1809), 1456 states have call successors, (1809) [2023-11-29 02:17:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 12507 transitions. [2023-11-29 02:17:45,991 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 12507 transitions. Word has length 121 [2023-11-29 02:17:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:45,991 INFO L495 AbstractCegarLoop]: Abstraction has 7373 states and 12507 transitions. [2023-11-29 02:17:45,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 12507 transitions. [2023-11-29 02:17:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:17:45,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:45,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:46,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 02:17:46,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 02:17:46,197 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:46,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash -651566736, now seen corresponding path program 1 times [2023-11-29 02:17:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:46,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350037964] [2023-11-29 02:17:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:46,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:17:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:17:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:17:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:17:46,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350037964] [2023-11-29 02:17:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350037964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447489242] [2023-11-29 02:17:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:46,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:46,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:46,797 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:46,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:17:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:47,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:17:47,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 02:17:47,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:47,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447489242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:47,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:47,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:17:47,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929127299] [2023-11-29 02:17:47,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:47,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:17:47,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:47,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:17:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:17:47,097 INFO L87 Difference]: Start difference. First operand 7373 states and 12507 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:48,791 INFO L93 Difference]: Finished difference Result 13104 states and 22394 transitions. [2023-11-29 02:17:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:17:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-11-29 02:17:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:48,835 INFO L225 Difference]: With dead ends: 13104 [2023-11-29 02:17:48,836 INFO L226 Difference]: Without dead ends: 7373 [2023-11-29 02:17:48,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:48,856 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 326 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:48,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 2402 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:17:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7373 states. [2023-11-29 02:17:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7373 to 7373. [2023-11-29 02:17:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7373 states, 5581 states have (on average 1.6489876366242608) internal successors, (9203), 5860 states have internal predecessors, (9203), 1461 states have call successors, (1461), 284 states have call predecessors, (1461), 330 states have return successors, (1809), 1470 states have call predecessors, (1809), 1456 states have call successors, (1809) [2023-11-29 02:17:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 12473 transitions. [2023-11-29 02:17:50,427 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 12473 transitions. Word has length 121 [2023-11-29 02:17:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:50,427 INFO L495 AbstractCegarLoop]: Abstraction has 7373 states and 12473 transitions. [2023-11-29 02:17:50,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 02:17:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 12473 transitions. [2023-11-29 02:17:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:17:50,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:50,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-11-29 02:17:50,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 02:17:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 02:17:50,634 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:50,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -75901189, now seen corresponding path program 1 times [2023-11-29 02:17:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726728726] [2023-11-29 02:17:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:17:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:17:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:17:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:17:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:17:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:17:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726728726] [2023-11-29 02:17:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726728726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631989100] [2023-11-29 02:17:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:51,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:51,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:51,230 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:51,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:17:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:51,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:17:51,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 02:17:51,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631989100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:51,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:51,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 02:17:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89607219] [2023-11-29 02:17:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:51,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:17:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:17:51,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:17:51,619 INFO L87 Difference]: Start difference. First operand 7373 states and 12473 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 02:17:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:56,286 INFO L93 Difference]: Finished difference Result 17665 states and 30219 transitions. [2023-11-29 02:17:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:17:56,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2023-11-29 02:17:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:56,333 INFO L225 Difference]: With dead ends: 17665 [2023-11-29 02:17:56,333 INFO L226 Difference]: Without dead ends: 12110 [2023-11-29 02:17:56,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:17:56,358 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1972 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 3209 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 3209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:56,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 1713 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 3209 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 02:17:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12110 states. [2023-11-29 02:17:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12110 to 12031. [2023-11-29 02:17:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12031 states, 9111 states have (on average 1.6453737240698056) internal successors, (14991), 9546 states have internal predecessors, (14991), 2375 states have call successors, (2375), 430 states have call predecessors, (2375), 544 states have return successors, (3169), 2402 states have call predecessors, (3169), 2370 states have call successors, (3169) [2023-11-29 02:17:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12031 states to 12031 states and 20535 transitions. [2023-11-29 02:17:58,985 INFO L78 Accepts]: Start accepts. Automaton has 12031 states and 20535 transitions. Word has length 124 [2023-11-29 02:17:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:58,985 INFO L495 AbstractCegarLoop]: Abstraction has 12031 states and 20535 transitions. [2023-11-29 02:17:58,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 02:17:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 12031 states and 20535 transitions. [2023-11-29 02:17:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:17:58,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:58,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-11-29 02:17:59,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 02:17:59,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 02:17:59,194 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:59,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1874399066, now seen corresponding path program 1 times [2023-11-29 02:17:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:59,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850268633] [2023-11-29 02:17:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:17:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:17:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:17:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:17:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:17:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:17:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:17:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:17:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:17:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:17:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:17:59,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850268633] [2023-11-29 02:17:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850268633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026270756] [2023-11-29 02:17:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:59,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:59,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:59,810 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:59,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 02:18:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:00,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:18:00,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 02:18:00,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:18:00,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026270756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:00,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:18:00,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-29 02:18:00,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9379047] [2023-11-29 02:18:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:00,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:18:00,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:18:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:00,200 INFO L87 Difference]: Start difference. First operand 12031 states and 20535 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 02:18:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:03,066 INFO L93 Difference]: Finished difference Result 12474 states and 21377 transitions. [2023-11-29 02:18:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:18:03,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 124 [2023-11-29 02:18:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:03,130 INFO L225 Difference]: With dead ends: 12474 [2023-11-29 02:18:03,130 INFO L226 Difference]: Without dead ends: 12457 [2023-11-29 02:18:03,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:03,139 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 801 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:03,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2180 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:18:03,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2023-11-29 02:18:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 12059. [2023-11-29 02:18:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12059 states, 9139 states have (on average 1.6433964328701172) internal successors, (15019), 9574 states have internal predecessors, (15019), 2375 states have call successors, (2375), 430 states have call predecessors, (2375), 544 states have return successors, (3169), 2402 states have call predecessors, (3169), 2370 states have call successors, (3169) [2023-11-29 02:18:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12059 states to 12059 states and 20563 transitions. [2023-11-29 02:18:05,568 INFO L78 Accepts]: Start accepts. Automaton has 12059 states and 20563 transitions. Word has length 124 [2023-11-29 02:18:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:05,569 INFO L495 AbstractCegarLoop]: Abstraction has 12059 states and 20563 transitions. [2023-11-29 02:18:05,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 02:18:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 12059 states and 20563 transitions. [2023-11-29 02:18:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 02:18:05,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:05,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:05,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 02:18:05,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 02:18:05,777 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:05,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1053829260, now seen corresponding path program 1 times [2023-11-29 02:18:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:05,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390766059] [2023-11-29 02:18:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:05,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:18:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:18:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:18:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:18:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:18:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:18:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:18:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:18:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:18:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:18:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390766059] [2023-11-29 02:18:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390766059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:06,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144321613] [2023-11-29 02:18:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:06,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:06,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:06,416 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:06,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 02:18:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:18:06,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 02:18:06,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:18:06,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144321613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:06,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:18:06,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:18:06,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199180408] [2023-11-29 02:18:06,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:06,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:18:06,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:18:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:06,704 INFO L87 Difference]: Start difference. First operand 12059 states and 20563 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 02:18:09,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:09,115 INFO L93 Difference]: Finished difference Result 12104 states and 20625 transitions. [2023-11-29 02:18:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:18:09,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 129 [2023-11-29 02:18:09,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:09,162 INFO L225 Difference]: With dead ends: 12104 [2023-11-29 02:18:09,162 INFO L226 Difference]: Without dead ends: 12087 [2023-11-29 02:18:09,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:18:09,168 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 34 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:09,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3367 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12087 states. [2023-11-29 02:18:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 12059. [2023-11-29 02:18:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12059 states, 9139 states have (on average 1.6394572710362183) internal successors, (14983), 9574 states have internal predecessors, (14983), 2375 states have call successors, (2375), 430 states have call predecessors, (2375), 544 states have return successors, (3169), 2402 states have call predecessors, (3169), 2370 states have call successors, (3169) [2023-11-29 02:18:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12059 states to 12059 states and 20527 transitions. [2023-11-29 02:18:11,555 INFO L78 Accepts]: Start accepts. Automaton has 12059 states and 20527 transitions. Word has length 129 [2023-11-29 02:18:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:11,555 INFO L495 AbstractCegarLoop]: Abstraction has 12059 states and 20527 transitions. [2023-11-29 02:18:11,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 02:18:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 12059 states and 20527 transitions. [2023-11-29 02:18:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 02:18:11,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:11,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:11,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 02:18:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 02:18:11,766 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:11,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 514197674, now seen corresponding path program 1 times [2023-11-29 02:18:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660865661] [2023-11-29 02:18:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:11,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:18:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:18:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:18:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:18:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:18:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:18:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:18:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:18:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:18:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:18:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:18:12,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660865661] [2023-11-29 02:18:12,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660865661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405802220] [2023-11-29 02:18:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:12,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:12,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:12,330 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:12,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 02:18:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:12,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 02:18:12,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:18:12,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:18:12,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405802220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:12,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:18:12,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 02:18:12,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648486875] [2023-11-29 02:18:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:18:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:12,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:18:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:18:12,656 INFO L87 Difference]: Start difference. First operand 12059 states and 20527 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:18:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:15,451 INFO L93 Difference]: Finished difference Result 23980 states and 40854 transitions. [2023-11-29 02:18:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:18:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2023-11-29 02:18:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:15,502 INFO L225 Difference]: With dead ends: 23980 [2023-11-29 02:18:15,503 INFO L226 Difference]: Without dead ends: 12134 [2023-11-29 02:18:15,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:18:15,532 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 165 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4906 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:15,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 4906 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:18:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12134 states. [2023-11-29 02:18:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12134 to 12059. [2023-11-29 02:18:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12059 states, 9139 states have (on average 1.6394572710362183) internal successors, (14983), 9574 states have internal predecessors, (14983), 2375 states have call successors, (2375), 430 states have call predecessors, (2375), 544 states have return successors, (3169), 2402 states have call predecessors, (3169), 2370 states have call successors, (3169) [2023-11-29 02:18:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12059 states to 12059 states and 20527 transitions. [2023-11-29 02:18:17,914 INFO L78 Accepts]: Start accepts. Automaton has 12059 states and 20527 transitions. Word has length 138 [2023-11-29 02:18:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:17,914 INFO L495 AbstractCegarLoop]: Abstraction has 12059 states and 20527 transitions. [2023-11-29 02:18:17,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:18:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12059 states and 20527 transitions. [2023-11-29 02:18:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 02:18:17,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:17,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:17,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 02:18:18,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 02:18:18,121 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:18,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1639713477, now seen corresponding path program 1 times [2023-11-29 02:18:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341331850] [2023-11-29 02:18:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:18,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:18:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 02:18:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 02:18:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:18:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:18:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:18:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:18:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:18:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:18:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:18:18,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341331850] [2023-11-29 02:18:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341331850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486753298] [2023-11-29 02:18:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:18,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:18,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:18,746 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:18,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 02:18:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:19,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:18:19,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 02:18:19,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:18:19,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486753298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:19,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:18:19,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 02:18:19,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433885513] [2023-11-29 02:18:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:19,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:18:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:18:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:18:19,047 INFO L87 Difference]: Start difference. First operand 12059 states and 20527 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 02:18:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:21,599 INFO L93 Difference]: Finished difference Result 23989 states and 40865 transitions. [2023-11-29 02:18:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:18:21,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2023-11-29 02:18:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:21,686 INFO L225 Difference]: With dead ends: 23989 [2023-11-29 02:18:21,686 INFO L226 Difference]: Without dead ends: 11894 [2023-11-29 02:18:21,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:18:21,781 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 11 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:21,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2514 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2023-11-29 02:18:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 11894. [2023-11-29 02:18:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11894 states, 8989 states have (on average 1.6405606852820114) internal successors, (14747), 9418 states have internal predecessors, (14747), 2370 states have call successors, (2370), 427 states have call predecessors, (2370), 534 states have return successors, (3155), 2396 states have call predecessors, (3155), 2365 states have call successors, (3155) [2023-11-29 02:18:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11894 states to 11894 states and 20272 transitions. [2023-11-29 02:18:24,160 INFO L78 Accepts]: Start accepts. Automaton has 11894 states and 20272 transitions. Word has length 138 [2023-11-29 02:18:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:24,160 INFO L495 AbstractCegarLoop]: Abstraction has 11894 states and 20272 transitions. [2023-11-29 02:18:24,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 02:18:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 11894 states and 20272 transitions. [2023-11-29 02:18:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 02:18:24,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:24,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:24,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 02:18:24,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 02:18:24,366 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:24,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:24,366 INFO L85 PathProgramCache]: Analyzing trace with hash 473795503, now seen corresponding path program 1 times [2023-11-29 02:18:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:24,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576474490] [2023-11-29 02:18:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:24,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:18:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 02:18:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:18:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 02:18:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:18:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:18:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:18:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:18:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:18:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:18:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:18:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576474490] [2023-11-29 02:18:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576474490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696377401] [2023-11-29 02:18:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:24,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:24,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:24,943 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:24,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 02:18:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:25,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:18:25,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:18:25,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:18:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696377401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:25,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:18:25,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:18:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087189313] [2023-11-29 02:18:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:18:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:18:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:18:25,239 INFO L87 Difference]: Start difference. First operand 11894 states and 20272 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 02:18:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:27,664 INFO L93 Difference]: Finished difference Result 23763 states and 40516 transitions. [2023-11-29 02:18:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:18:27,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2023-11-29 02:18:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:27,719 INFO L225 Difference]: With dead ends: 23763 [2023-11-29 02:18:27,719 INFO L226 Difference]: Without dead ends: 11894 [2023-11-29 02:18:27,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:27,752 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 174 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:27,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2349 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:18:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2023-11-29 02:18:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 11894. [2023-11-29 02:18:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11894 states, 8989 states have (on average 1.6404494382022472) internal successors, (14746), 9418 states have internal predecessors, (14746), 2370 states have call successors, (2370), 427 states have call predecessors, (2370), 534 states have return successors, (3155), 2396 states have call predecessors, (3155), 2365 states have call successors, (3155) [2023-11-29 02:18:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11894 states to 11894 states and 20271 transitions. [2023-11-29 02:18:30,175 INFO L78 Accepts]: Start accepts. Automaton has 11894 states and 20271 transitions. Word has length 140 [2023-11-29 02:18:30,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:30,175 INFO L495 AbstractCegarLoop]: Abstraction has 11894 states and 20271 transitions. [2023-11-29 02:18:30,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 02:18:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11894 states and 20271 transitions. [2023-11-29 02:18:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 02:18:30,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:30,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:30,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 02:18:30,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:30,381 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:30,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1263278031, now seen corresponding path program 1 times [2023-11-29 02:18:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766611706] [2023-11-29 02:18:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:18:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:18:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:18:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 02:18:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:18:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:18:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:18:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:18:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:18:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:18:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:18:31,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:31,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766611706] [2023-11-29 02:18:31,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766611706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:31,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:31,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:18:31,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434634026] [2023-11-29 02:18:31,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:18:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:31,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:18:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:31,008 INFO L87 Difference]: Start difference. First operand 11894 states and 20271 transitions. Second operand has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:18:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:42,254 INFO L93 Difference]: Finished difference Result 27297 states and 48067 transitions. [2023-11-29 02:18:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:18:42,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2023-11-29 02:18:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:42,326 INFO L225 Difference]: With dead ends: 27297 [2023-11-29 02:18:42,326 INFO L226 Difference]: Without dead ends: 15443 [2023-11-29 02:18:42,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:18:42,356 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1458 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 5170 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 5516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 5170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:42,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 2775 Invalid, 5516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [346 Valid, 5170 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 02:18:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15443 states. [2023-11-29 02:18:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15443 to 11898. [2023-11-29 02:18:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11898 states, 8993 states have (on average 1.6401645724452352) internal successors, (14750), 9422 states have internal predecessors, (14750), 2370 states have call successors, (2370), 427 states have call predecessors, (2370), 534 states have return successors, (3155), 2396 states have call predecessors, (3155), 2365 states have call successors, (3155) [2023-11-29 02:18:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11898 states to 11898 states and 20275 transitions. [2023-11-29 02:18:45,007 INFO L78 Accepts]: Start accepts. Automaton has 11898 states and 20275 transitions. Word has length 141 [2023-11-29 02:18:45,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:45,007 INFO L495 AbstractCegarLoop]: Abstraction has 11898 states and 20275 transitions. [2023-11-29 02:18:45,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:18:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 11898 states and 20275 transitions. [2023-11-29 02:18:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 02:18:45,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:45,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:45,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 02:18:45,012 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:45,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2117003616, now seen corresponding path program 1 times [2023-11-29 02:18:45,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548398276] [2023-11-29 02:18:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:45,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:18:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:18:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 02:18:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:18:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:18:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:18:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:18:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:18:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:18:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:18:45,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:45,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548398276] [2023-11-29 02:18:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548398276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:45,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:18:45,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52919992] [2023-11-29 02:18:45,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:45,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:18:45,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:18:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:45,665 INFO L87 Difference]: Start difference. First operand 11898 states and 20275 transitions. Second operand has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:18:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:56,415 INFO L93 Difference]: Finished difference Result 27185 states and 47881 transitions. [2023-11-29 02:18:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:18:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2023-11-29 02:18:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:56,532 INFO L225 Difference]: With dead ends: 27185 [2023-11-29 02:18:56,532 INFO L226 Difference]: Without dead ends: 15420 [2023-11-29 02:18:56,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:18:56,631 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1344 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 5342 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 5672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:56,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 2789 Invalid, 5672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [330 Valid, 5342 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 02:18:56,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15420 states. [2023-11-29 02:18:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15420 to 11900. [2023-11-29 02:18:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11900 states, 8995 states have (on average 1.6400222345747637) internal successors, (14752), 9424 states have internal predecessors, (14752), 2370 states have call successors, (2370), 427 states have call predecessors, (2370), 534 states have return successors, (3155), 2396 states have call predecessors, (3155), 2365 states have call successors, (3155) [2023-11-29 02:18:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11900 states to 11900 states and 20277 transitions. [2023-11-29 02:18:59,359 INFO L78 Accepts]: Start accepts. Automaton has 11900 states and 20277 transitions. Word has length 141 [2023-11-29 02:18:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:59,359 INFO L495 AbstractCegarLoop]: Abstraction has 11900 states and 20277 transitions. [2023-11-29 02:18:59,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:18:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 11900 states and 20277 transitions. [2023-11-29 02:18:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:18:59,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:59,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:59,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 02:18:59,365 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:59,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1215481206, now seen corresponding path program 1 times [2023-11-29 02:18:59,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:59,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488438458] [2023-11-29 02:18:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:59,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:18:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:18:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:18:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:18:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:18:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:18:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:19:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:19:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:19:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:19:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:19:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:19:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:19:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:19:00,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:00,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488438458] [2023-11-29 02:19:00,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488438458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:00,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:00,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 02:19:00,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938573844] [2023-11-29 02:19:00,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:00,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:19:00,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:19:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:19:00,056 INFO L87 Difference]: Start difference. First operand 11900 states and 20277 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:19:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:25,104 INFO L93 Difference]: Finished difference Result 24304 states and 42961 transitions. [2023-11-29 02:19:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 02:19:25,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2023-11-29 02:19:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:25,173 INFO L225 Difference]: With dead ends: 24304 [2023-11-29 02:19:25,173 INFO L226 Difference]: Without dead ends: 13450 [2023-11-29 02:19:25,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=491, Invalid=2479, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 02:19:25,206 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 6369 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 7107 mSolverCounterSat, 2184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6456 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 9291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2184 IncrementalHoareTripleChecker+Valid, 7107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:25,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6456 Valid, 2368 Invalid, 9291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2184 Valid, 7107 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-11-29 02:19:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13450 states. [2023-11-29 02:19:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13450 to 10262. [2023-11-29 02:19:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10262 states, 7764 states have (on average 1.6285419886656363) internal successors, (12644), 8133 states have internal predecessors, (12644), 2020 states have call successors, (2020), 375 states have call predecessors, (2020), 477 states have return successors, (2722), 2043 states have call predecessors, (2722), 2015 states have call successors, (2722) [2023-11-29 02:19:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10262 states to 10262 states and 17386 transitions. [2023-11-29 02:19:27,758 INFO L78 Accepts]: Start accepts. Automaton has 10262 states and 17386 transitions. Word has length 142 [2023-11-29 02:19:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:27,759 INFO L495 AbstractCegarLoop]: Abstraction has 10262 states and 17386 transitions. [2023-11-29 02:19:27,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 02:19:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 10262 states and 17386 transitions. [2023-11-29 02:19:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 02:19:27,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:27,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:27,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 02:19:27,764 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:27,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -214597783, now seen corresponding path program 1 times [2023-11-29 02:19:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062576197] [2023-11-29 02:19:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:19:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:19:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:19:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:19:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:19:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:19:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:19:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:19:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:19:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:19:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:19:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 02:19:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:19:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:19:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 02:19:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 02:19:28,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062576197] [2023-11-29 02:19:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062576197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:19:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479427965] [2023-11-29 02:19:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:28,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:19:28,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:19:28,508 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:19:28,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 02:19:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:19:28,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:19:28,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:19:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:19:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479427965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:19:29,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:19:29,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 18 [2023-11-29 02:19:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607403130] [2023-11-29 02:19:29,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:19:29,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:19:29,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:19:29,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:19:29,151 INFO L87 Difference]: Start difference. First operand 10262 states and 17386 transitions. Second operand has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 02:20:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:15,083 INFO L93 Difference]: Finished difference Result 25141 states and 45937 transitions. [2023-11-29 02:20:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-29 02:20:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) Word has length 143 [2023-11-29 02:20:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:15,149 INFO L225 Difference]: With dead ends: 25141 [2023-11-29 02:20:15,149 INFO L226 Difference]: Without dead ends: 14987 [2023-11-29 02:20:15,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=1759, Invalid=13741, Unknown=0, NotChecked=0, Total=15500 [2023-11-29 02:20:15,189 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 9052 mSDsluCounter, 7738 mSDsCounter, 0 mSdLazyCounter, 19483 mSolverCounterSat, 3043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9116 SdHoareTripleChecker+Valid, 8546 SdHoareTripleChecker+Invalid, 22526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3043 IncrementalHoareTripleChecker+Valid, 19483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:15,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9116 Valid, 8546 Invalid, 22526 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3043 Valid, 19483 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2023-11-29 02:20:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14987 states. [2023-11-29 02:20:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14987 to 10395. [2023-11-29 02:20:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10395 states, 7988 states have (on average 1.6026539809714573) internal successors, (12802), 8363 states have internal predecessors, (12802), 1902 states have call successors, (1902), 431 states have call predecessors, (1902), 504 states have return successors, (2599), 1869 states have call predecessors, (2599), 1897 states have call successors, (2599) [2023-11-29 02:20:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10395 states to 10395 states and 17303 transitions. [2023-11-29 02:20:17,857 INFO L78 Accepts]: Start accepts. Automaton has 10395 states and 17303 transitions. Word has length 143 [2023-11-29 02:20:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:17,858 INFO L495 AbstractCegarLoop]: Abstraction has 10395 states and 17303 transitions. [2023-11-29 02:20:17,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 02:20:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 10395 states and 17303 transitions. [2023-11-29 02:20:17,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 02:20:17,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:17,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:17,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 02:20:18,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:18,061 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:18,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash 983803085, now seen corresponding path program 1 times [2023-11-29 02:20:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:18,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072010996] [2023-11-29 02:20:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:18,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:20:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:20:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:20:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:20:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:20:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:20:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:20:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:20:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 02:20:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:20:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 02:20:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 02:20:18,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:18,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072010996] [2023-11-29 02:20:18,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072010996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:18,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:18,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:20:18,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131581438] [2023-11-29 02:20:18,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:18,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:20:18,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:20:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:20:18,753 INFO L87 Difference]: Start difference. First operand 10395 states and 17303 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 02:20:35,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:35,279 INFO L93 Difference]: Finished difference Result 23683 states and 41078 transitions. [2023-11-29 02:20:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:20:35,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 146 [2023-11-29 02:20:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:35,347 INFO L225 Difference]: With dead ends: 23683 [2023-11-29 02:20:35,347 INFO L226 Difference]: Without dead ends: 14208 [2023-11-29 02:20:35,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:20:35,372 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 4051 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 1156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 6752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:35,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 2939 Invalid, 6752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1156 Valid, 5596 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 02:20:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14208 states. [2023-11-29 02:20:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14208 to 10768. [2023-11-29 02:20:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10768 states, 8302 states have (on average 1.5927487352445193) internal successors, (13223), 8659 states have internal predecessors, (13223), 1931 states have call successors, (1931), 479 states have call predecessors, (1931), 534 states have return successors, (2591), 1898 states have call predecessors, (2591), 1926 states have call successors, (2591) [2023-11-29 02:20:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10768 states to 10768 states and 17745 transitions. [2023-11-29 02:20:38,154 INFO L78 Accepts]: Start accepts. Automaton has 10768 states and 17745 transitions. Word has length 146 [2023-11-29 02:20:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:38,155 INFO L495 AbstractCegarLoop]: Abstraction has 10768 states and 17745 transitions. [2023-11-29 02:20:38,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 02:20:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 10768 states and 17745 transitions. [2023-11-29 02:20:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 02:20:38,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:38,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:38,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 02:20:38,158 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:38,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2062097943, now seen corresponding path program 1 times [2023-11-29 02:20:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:38,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098675661] [2023-11-29 02:20:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:38,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:20:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:20:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:20:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:20:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:20:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:20:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:20:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:20:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:20:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:20:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:20:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:20:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 02:20:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:20:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 02:20:38,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:38,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098675661] [2023-11-29 02:20:38,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098675661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:38,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:38,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:20:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309005102] [2023-11-29 02:20:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:38,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:20:38,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:20:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:20:38,747 INFO L87 Difference]: Start difference. First operand 10768 states and 17745 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 02:21:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:21:04,928 INFO L93 Difference]: Finished difference Result 48131 states and 87122 transitions. [2023-11-29 02:21:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:21:04,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2023-11-29 02:21:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:21:05,155 INFO L225 Difference]: With dead ends: 48131 [2023-11-29 02:21:05,155 INFO L226 Difference]: Without dead ends: 37543 [2023-11-29 02:21:05,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:21:05,214 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 4158 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 1263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 5516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1263 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:21:05,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4219 Valid, 2189 Invalid, 5516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1263 Valid, 4253 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-11-29 02:21:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37543 states. [2023-11-29 02:21:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37543 to 25820. [2023-11-29 02:21:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25820 states, 19042 states have (on average 1.5739943283268565) internal successors, (29972), 20199 states have internal predecessors, (29972), 5572 states have call successors, (5572), 983 states have call predecessors, (5572), 1205 states have return successors, (8003), 5537 states have call predecessors, (8003), 5567 states have call successors, (8003) [2023-11-29 02:21:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25820 states to 25820 states and 43547 transitions. [2023-11-29 02:21:14,186 INFO L78 Accepts]: Start accepts. Automaton has 25820 states and 43547 transitions. Word has length 151 [2023-11-29 02:21:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:21:14,186 INFO L495 AbstractCegarLoop]: Abstraction has 25820 states and 43547 transitions. [2023-11-29 02:21:14,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-29 02:21:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 25820 states and 43547 transitions. [2023-11-29 02:21:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 02:21:14,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:21:14,190 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:14,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 02:21:14,190 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:21:14,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:14,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1349566477, now seen corresponding path program 1 times [2023-11-29 02:21:14,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:14,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813428935] [2023-11-29 02:21:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:21:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:21:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:21:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:14,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:21:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:21:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:21:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:21:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:21:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 02:21:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:21:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 02:21:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:21:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:21:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 02:21:15,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:15,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813428935] [2023-11-29 02:21:15,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813428935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:21:15,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639617280] [2023-11-29 02:21:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:15,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:21:15,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:21:15,353 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:21:15,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 02:21:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:15,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:21:15,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:21:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 02:21:15,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:21:15,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639617280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:15,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:21:15,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2023-11-29 02:21:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202724317] [2023-11-29 02:21:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:15,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:21:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:21:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:21:15,727 INFO L87 Difference]: Start difference. First operand 25820 states and 43547 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 02:21:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:21:23,828 INFO L93 Difference]: Finished difference Result 26639 states and 45075 transitions. [2023-11-29 02:21:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:21:23,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-11-29 02:21:23,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:21:23,955 INFO L225 Difference]: With dead ends: 26639 [2023-11-29 02:21:23,956 INFO L226 Difference]: Without dead ends: 26622 [2023-11-29 02:21:23,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:21:23,975 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 48 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:21:23,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2606 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:21:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26622 states. [2023-11-29 02:21:33,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26622 to 25906. [2023-11-29 02:21:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25906 states, 19128 states have (on average 1.5691656210790463) internal successors, (30015), 20285 states have internal predecessors, (30015), 5572 states have call successors, (5572), 983 states have call predecessors, (5572), 1205 states have return successors, (8003), 5537 states have call predecessors, (8003), 5567 states have call successors, (8003) [2023-11-29 02:21:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25906 states to 25906 states and 43590 transitions. [2023-11-29 02:21:33,511 INFO L78 Accepts]: Start accepts. Automaton has 25906 states and 43590 transitions. Word has length 157 [2023-11-29 02:21:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:21:33,511 INFO L495 AbstractCegarLoop]: Abstraction has 25906 states and 43590 transitions. [2023-11-29 02:21:33,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 02:21:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 25906 states and 43590 transitions. [2023-11-29 02:21:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-29 02:21:33,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:21:33,518 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:33,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-29 02:21:33,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:21:33,718 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:21:33,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -357536551, now seen corresponding path program 1 times [2023-11-29 02:21:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:33,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724608152] [2023-11-29 02:21:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:33,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:21:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:21:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:21:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:21:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:21:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:21:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:21:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:21:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:21:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 02:21:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:21:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 02:21:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:21:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:21:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 02:21:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 02:21:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 02:21:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-29 02:21:34,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724608152] [2023-11-29 02:21:34,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724608152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:21:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833334031] [2023-11-29 02:21:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:34,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:21:34,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:21:34,850 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:21:34,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 02:21:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:35,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:21:35,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:21:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 02:21:35,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:21:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-29 02:21:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833334031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:21:35,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:21:35,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2023-11-29 02:21:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465232851] [2023-11-29 02:21:35,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:21:35,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 02:21:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 02:21:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:21:35,995 INFO L87 Difference]: Start difference. First operand 25906 states and 43590 transitions. Second operand has 25 states, 25 states have (on average 10.24) internal successors, (256), 18 states have internal predecessors, (256), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2023-11-29 02:23:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:23:01,784 INFO L93 Difference]: Finished difference Result 154030 states and 293283 transitions. [2023-11-29 02:23:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-29 02:23:01,784 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 18 states have internal predecessors, (256), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) Word has length 185 [2023-11-29 02:23:01,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:23:03,156 INFO L225 Difference]: With dead ends: 154030 [2023-11-29 02:23:03,156 INFO L226 Difference]: Without dead ends: 128313 [2023-11-29 02:23:03,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 416 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3924 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=1746, Invalid=10686, Unknown=0, NotChecked=0, Total=12432 [2023-11-29 02:23:03,362 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 10781 mSDsluCounter, 9819 mSDsCounter, 0 mSdLazyCounter, 28087 mSolverCounterSat, 3563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10795 SdHoareTripleChecker+Valid, 11072 SdHoareTripleChecker+Invalid, 31650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3563 IncrementalHoareTripleChecker+Valid, 28087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:23:03,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10795 Valid, 11072 Invalid, 31650 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3563 Valid, 28087 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2023-11-29 02:23:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128313 states. [2023-11-29 02:23:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128313 to 93659. [2023-11-29 02:23:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93659 states, 67017 states have (on average 1.546741871465449) internal successors, (103658), 71282 states have internal predecessors, (103658), 22608 states have call successors, (22608), 2885 states have call predecessors, (22608), 4033 states have return successors, (38858), 22947 states have call predecessors, (38858), 22603 states have call successors, (38858) [2023-11-29 02:23:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93659 states to 93659 states and 165124 transitions. [2023-11-29 02:23:41,688 INFO L78 Accepts]: Start accepts. Automaton has 93659 states and 165124 transitions. Word has length 185 [2023-11-29 02:23:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:23:41,688 INFO L495 AbstractCegarLoop]: Abstraction has 93659 states and 165124 transitions. [2023-11-29 02:23:41,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 18 states have internal predecessors, (256), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2023-11-29 02:23:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 93659 states and 165124 transitions. [2023-11-29 02:23:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-29 02:23:41,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:23:41,704 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:41,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 02:23:41,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 02:23:41,905 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:23:41,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1350140340, now seen corresponding path program 1 times [2023-11-29 02:23:41,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:41,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438080216] [2023-11-29 02:23:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:23:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:23:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:23:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:23:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:23:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:23:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:23:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:23:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:23:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:23:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:23:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:23:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 02:23:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:23:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 02:23:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:23:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:23:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:23:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 02:23:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:23:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 02:23:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438080216] [2023-11-29 02:23:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438080216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:23:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22414271] [2023-11-29 02:23:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:42,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:23:42,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:23:42,839 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:23:42,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 02:23:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:43,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:23:43,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:23:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-29 02:23:43,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:23:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22414271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:43,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:23:43,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:23:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694386666] [2023-11-29 02:23:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:43,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:23:43,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:23:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:23:43,216 INFO L87 Difference]: Start difference. First operand 93659 states and 165124 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 02:24:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:24:19,234 INFO L93 Difference]: Finished difference Result 188678 states and 334448 transitions. [2023-11-29 02:24:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:24:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 186 [2023-11-29 02:24:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:24:19,881 INFO L225 Difference]: With dead ends: 188678 [2023-11-29 02:24:19,881 INFO L226 Difference]: Without dead ends: 95307 [2023-11-29 02:24:20,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:24:20,259 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 17 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:24:20,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2438 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:24:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95307 states. [2023-11-29 02:24:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95307 to 95055. [2023-11-29 02:24:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95055 states, 68225 states have (on average 1.5470282154635397) internal successors, (105546), 72508 states have internal predecessors, (105546), 22608 states have call successors, (22608), 3055 states have call predecessors, (22608), 4221 states have return successors, (38202), 22947 states have call predecessors, (38202), 22603 states have call successors, (38202) [2023-11-29 02:24:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95055 states to 95055 states and 166356 transitions. [2023-11-29 02:24:56,168 INFO L78 Accepts]: Start accepts. Automaton has 95055 states and 166356 transitions. Word has length 186 [2023-11-29 02:24:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:24:56,168 INFO L495 AbstractCegarLoop]: Abstraction has 95055 states and 166356 transitions. [2023-11-29 02:24:56,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 02:24:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 95055 states and 166356 transitions. [2023-11-29 02:24:56,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:24:56,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:24:56,186 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:24:56,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 02:24:56,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:24:56,386 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:24:56,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:56,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1449762777, now seen corresponding path program 1 times [2023-11-29 02:24:56,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:24:56,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478076892] [2023-11-29 02:24:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:56,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:24:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:24:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:24:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:24:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:24:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:24:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:24:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:24:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:24:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:24:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:24:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:24:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 02:24:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 02:24:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:24:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:24:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 02:24:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:24:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 02:24:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 02:24:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 02:24:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 02:24:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-29 02:24:57,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:24:57,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478076892] [2023-11-29 02:24:57,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478076892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:24:57,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78213803] [2023-11-29 02:24:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:57,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:24:57,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:24:57,018 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:24:57,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 02:24:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 2027 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:24:57,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:24:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-29 02:24:57,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:24:57,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78213803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:57,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:24:57,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:24:57,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602203822] [2023-11-29 02:24:57,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:57,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:24:57,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:24:57,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:24:57,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:24:57,321 INFO L87 Difference]: Start difference. First operand 95055 states and 166356 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 02:25:32,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:32,495 INFO L93 Difference]: Finished difference Result 190026 states and 332593 transitions. [2023-11-29 02:25:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:25:32,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 189 [2023-11-29 02:25:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:33,115 INFO L225 Difference]: With dead ends: 190026 [2023-11-29 02:25:33,116 INFO L226 Difference]: Without dead ends: 95110 [2023-11-29 02:25:33,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:25:33,525 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 65 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:33,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 2476 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:25:33,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95110 states. [2023-11-29 02:26:06,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95110 to 95056. [2023-11-29 02:26:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95056 states, 68226 states have (on average 1.5469469117345294) internal successors, (105542), 72509 states have internal predecessors, (105542), 22608 states have call successors, (22608), 3055 states have call predecessors, (22608), 4221 states have return successors, (38202), 22947 states have call predecessors, (38202), 22603 states have call successors, (38202) [2023-11-29 02:26:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95056 states to 95056 states and 166352 transitions. [2023-11-29 02:26:07,883 INFO L78 Accepts]: Start accepts. Automaton has 95056 states and 166352 transitions. Word has length 189 [2023-11-29 02:26:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:07,883 INFO L495 AbstractCegarLoop]: Abstraction has 95056 states and 166352 transitions. [2023-11-29 02:26:07,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 02:26:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 95056 states and 166352 transitions. [2023-11-29 02:26:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-29 02:26:07,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:07,910 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:26:07,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 02:26:08,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 02:26:08,111 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:08,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:08,111 INFO L85 PathProgramCache]: Analyzing trace with hash -891246119, now seen corresponding path program 1 times [2023-11-29 02:26:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:08,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365680711] [2023-11-29 02:26:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:26:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:26:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:26:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:26:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:26:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:26:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:26:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:26:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:26:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:26:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:26:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:26:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 02:26:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:26:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 02:26:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:26:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:26:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 02:26:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 02:26:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:26:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 02:26:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:08,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365680711] [2023-11-29 02:26:08,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365680711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:26:08,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653171959] [2023-11-29 02:26:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:26:08,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:26:08,690 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:26:08,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 02:26:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:08,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:26:08,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:26:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 02:26:08,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:26:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653171959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:26:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 02:26:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070070468] [2023-11-29 02:26:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:08,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:26:08,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:26:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:26:08,984 INFO L87 Difference]: Start difference. First operand 95056 states and 166352 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 02:26:44,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:44,092 INFO L93 Difference]: Finished difference Result 190449 states and 336594 transitions. [2023-11-29 02:26:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:26:44,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 188 [2023-11-29 02:26:44,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:45,136 INFO L225 Difference]: With dead ends: 190449 [2023-11-29 02:26:45,136 INFO L226 Difference]: Without dead ends: 95342 [2023-11-29 02:26:45,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:26:45,721 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 28 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:45,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2437 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:26:45,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95342 states. [2023-11-29 02:27:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95342 to 95224. [2023-11-29 02:27:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95224 states, 68373 states have (on average 1.537405116054583) internal successors, (105117), 72656 states have internal predecessors, (105117), 22608 states have call successors, (22608), 3076 states have call predecessors, (22608), 4242 states have return successors, (38202), 22947 states have call predecessors, (38202), 22603 states have call successors, (38202) [2023-11-29 02:27:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95224 states to 95224 states and 165927 transitions. [2023-11-29 02:27:19,376 INFO L78 Accepts]: Start accepts. Automaton has 95224 states and 165927 transitions. Word has length 188 [2023-11-29 02:27:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:27:19,376 INFO L495 AbstractCegarLoop]: Abstraction has 95224 states and 165927 transitions. [2023-11-29 02:27:19,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 02:27:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 95224 states and 165927 transitions. [2023-11-29 02:27:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 02:27:19,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:27:19,404 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:27:19,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 02:27:19,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:19,604 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:27:19,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:27:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 230662580, now seen corresponding path program 1 times [2023-11-29 02:27:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:27:19,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994546079] [2023-11-29 02:27:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:27:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:19,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:27:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:27:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 02:27:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:27:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:27:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:27:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 02:27:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:27:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:27:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:27:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:27:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:27:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 02:27:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:27:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 02:27:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 02:27:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:27:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 02:27:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 02:27:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:27:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 02:27:20,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:27:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994546079] [2023-11-29 02:27:20,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994546079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:27:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169250685] [2023-11-29 02:27:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:20,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:27:20,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:27:20,168 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:27:20,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54a49de-041c-44fc-95a7-295607420290/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 02:27:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:20,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:27:20,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:27:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-29 02:27:20,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:27:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 02:27:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169250685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:27:20,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:27:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2023-11-29 02:27:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701276907] [2023-11-29 02:27:20,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:27:20,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 02:27:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:27:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 02:27:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:27:20,981 INFO L87 Difference]: Start difference. First operand 95224 states and 165927 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 14 states have internal predecessors, (223), 7 states have call successors, (47), 8 states have call predecessors, (47), 11 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44)