./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product31.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_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/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_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/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_78e73ec3-06bb-4c8b-874e-c6e218d294c8/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 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:12:28,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:12:28,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:12:28,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:12:28,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:12:28,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:12:28,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:12:28,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:12:28,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:12:28,393 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:12:28,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:12:28,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:12:28,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:12:28,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:12:28,395 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:12:28,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:12:28,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:12:28,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:12:28,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:12:28,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:12:28,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:12:28,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:12:28,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:12:28,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:12:28,401 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:12:28,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:12:28,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:12:28,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:12:28,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:12:28,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:12:28,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:12:28,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:12:28,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:12:28,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:12:28,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:12:28,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:12:28,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:12:28,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:12:28,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:12:28,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:12:28,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:12:28,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:12:28,406 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_78e73ec3-06bb-4c8b-874e-c6e218d294c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 [2023-11-29 05:12:28,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:12:28,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:12:28,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:12:28,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:12:28,652 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:12:28,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2023-11-29 05:12:31,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:12:31,769 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:12:31,770 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2023-11-29 05:12:31,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/data/2614510d6/ad4fba63700e451187953173ebda959e/FLAG6f888073f [2023-11-29 05:12:31,803 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/data/2614510d6/ad4fba63700e451187953173ebda959e [2023-11-29 05:12:31,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:12:31,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:12:31,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:12:31,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:12:31,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:12:31,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:12:31" (1/1) ... [2023-11-29 05:12:31,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8e78cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:31, skipping insertion in model container [2023-11-29 05:12:31,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:12:31" (1/1) ... [2023-11-29 05:12:31,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:12:32,061 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_78e73ec3-06bb-4c8b-874e-c6e218d294c8/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c[5910,5923] [2023-11-29 05:12:32,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:12:32,308 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:12:32,315 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2023-11-29 05:12:32,316 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2023-11-29 05:12:32,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [183] [2023-11-29 05:12:32,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [284] [2023-11-29 05:12:32,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [293] [2023-11-29 05:12:32,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [960] [2023-11-29 05:12:32,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1122] [2023-11-29 05:12:32,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2737] [2023-11-29 05:12:32,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2775] [2023-11-29 05:12:32,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3141] [2023-11-29 05:12:32,330 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_78e73ec3-06bb-4c8b-874e-c6e218d294c8/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c[5910,5923] [2023-11-29 05:12:32,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:12:32,476 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:12:32,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32 WrapperNode [2023-11-29 05:12:32,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:12:32,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:12:32,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:12:32,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:12:32,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,567 INFO L138 Inliner]: procedures = 97, calls = 346, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 924 [2023-11-29 05:12:32,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:12:32,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:12:32,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:12:32,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:12:32,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,622 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 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 05:12:32,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:12:32,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:12:32,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:12:32,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:12:32,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (1/1) ... [2023-11-29 05:12:32,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:12:32,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:32,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:12:32,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:12:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-29 05:12:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-29 05:12:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 05:12:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 05:12:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 05:12:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 05:12:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-29 05:12:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-29 05:12:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 05:12:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 05:12:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 05:12:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 05:12:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 05:12:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 05:12:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-29 05:12:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-29 05:12:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-29 05:12:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-29 05:12:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 05:12:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 05:12:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 05:12:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 05:12:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:12:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-29 05:12:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-29 05:12:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-29 05:12:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-29 05:12:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-29 05:12:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-29 05:12:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 05:12:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 05:12:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 05:12:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 05:12:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 05:12:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 05:12:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 05:12:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 05:12:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 05:12:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 05:12:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 05:12:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 05:12:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 05:12:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 05:12:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 05:12:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 05:12:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 05:12:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 05:12:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-29 05:12:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-29 05:12:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:12:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 05:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 05:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 05:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 05:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 05:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 05:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 05:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 05:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 05:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 05:12:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 05:12:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 05:12:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 05:12:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 05:12:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 05:12:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 05:12:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 05:12:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:12:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:12:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 05:12:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 05:12:32,957 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:12:32,960 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:12:33,983 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:12:34,083 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:12:34,083 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:12:34,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:12:34 BoogieIcfgContainer [2023-11-29 05:12:34,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:12:34,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:12:34,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:12:34,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:12:34,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:12:31" (1/3) ... [2023-11-29 05:12:34,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8d6cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:12:34, skipping insertion in model container [2023-11-29 05:12:34,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:12:32" (2/3) ... [2023-11-29 05:12:34,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8d6cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:12:34, skipping insertion in model container [2023-11-29 05:12:34,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:12:34" (3/3) ... [2023-11-29 05:12:34,092 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product31.cil.c [2023-11-29 05:12:34,111 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:12:34,111 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:12:34,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:12:34,183 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;@72e91d56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:12:34,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:12:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 565 states, 438 states have (on average 1.7168949771689497) internal successors, (752), 459 states have internal predecessors, (752), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:12:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:12:34,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:34,220 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:12:34,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:34,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1752086407, now seen corresponding path program 1 times [2023-11-29 05:12:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:34,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257337591] [2023-11-29 05:12:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:34,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:34,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:12:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:12:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:12:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:12:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:12:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:12:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:12:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:12:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:12:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:35,500 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 05:12:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257337591] [2023-11-29 05:12:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257337591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:35,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:35,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:12:35,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637084815] [2023-11-29 05:12:35,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:35,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:12:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:35,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:12:35,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:12:35,536 INFO L87 Difference]: Start difference. First operand has 565 states, 438 states have (on average 1.7168949771689497) internal successors, (752), 459 states have internal predecessors, (752), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:12:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:46,680 INFO L93 Difference]: Finished difference Result 1991 states and 3447 transitions. [2023-11-29 05:12:46,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:12:46,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2023-11-29 05:12:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:46,711 INFO L225 Difference]: With dead ends: 1991 [2023-11-29 05:12:46,711 INFO L226 Difference]: Without dead ends: 1432 [2023-11-29 05:12:46,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:12:46,743 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 2732 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 6108 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 6899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 6108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:46,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 2608 Invalid, 6899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [791 Valid, 6108 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-29 05:12:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-11-29 05:12:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1070. [2023-11-29 05:12:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.7046818727490995) internal successors, (1420), 865 states have internal predecessors, (1420), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:12:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1800 transitions. [2023-11-29 05:12:47,179 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1800 transitions. Word has length 93 [2023-11-29 05:12:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:47,180 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1800 transitions. [2023-11-29 05:12:47,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:12:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1800 transitions. [2023-11-29 05:12:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 05:12:47,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:47,190 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:12:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:12:47,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:47,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash -216339823, now seen corresponding path program 1 times [2023-11-29 05:12:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095476759] [2023-11-29 05:12:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:12:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:12:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:12:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:12:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:12:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:12:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:12:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:12:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:12:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:47,968 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 05:12:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095476759] [2023-11-29 05:12:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095476759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:47,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:47,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:12:47,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320539057] [2023-11-29 05:12:47,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:47,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:12:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:47,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:12:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:12:47,972 INFO L87 Difference]: Start difference. First operand 1070 states and 1800 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:12:53,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:53,987 INFO L93 Difference]: Finished difference Result 2464 states and 4205 transitions. [2023-11-29 05:12:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:12:53,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2023-11-29 05:12:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:54,002 INFO L225 Difference]: With dead ends: 2464 [2023-11-29 05:12:54,002 INFO L226 Difference]: Without dead ends: 1406 [2023-11-29 05:12:54,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:12:54,010 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 987 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:54,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1531 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 3100 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 05:12:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-29 05:12:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1070. [2023-11-29 05:12:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.703481392557023) internal successors, (1419), 865 states have internal predecessors, (1419), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:12:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1799 transitions. [2023-11-29 05:12:54,283 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1799 transitions. Word has length 95 [2023-11-29 05:12:54,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:54,283 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1799 transitions. [2023-11-29 05:12:54,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:12:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1799 transitions. [2023-11-29 05:12:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 05:12:54,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:54,290 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:12:54,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:12:54,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:54,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1853347956, now seen corresponding path program 1 times [2023-11-29 05:12:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808186809] [2023-11-29 05:12:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:12:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:12:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:12:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:12:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:12:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:12:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:12:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:12:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:55,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:12:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:12:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:55,011 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 05:12:55,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808186809] [2023-11-29 05:12:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808186809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:12:55,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:12:55,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:12:55,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622282108] [2023-11-29 05:12:55,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:12:55,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:12:55,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:55,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:12:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:12:55,015 INFO L87 Difference]: Start difference. First operand 1070 states and 1799 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:00,857 INFO L93 Difference]: Finished difference Result 2464 states and 4204 transitions. [2023-11-29 05:13:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:13:00,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2023-11-29 05:13:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:00,867 INFO L225 Difference]: With dead ends: 2464 [2023-11-29 05:13:00,867 INFO L226 Difference]: Without dead ends: 1406 [2023-11-29 05:13:00,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:13:00,873 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 984 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 3116 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 3116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:00,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1554 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 3116 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 05:13:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-29 05:13:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1070. [2023-11-29 05:13:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.702280912364946) internal successors, (1418), 865 states have internal predecessors, (1418), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1798 transitions. [2023-11-29 05:13:01,160 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1798 transitions. Word has length 96 [2023-11-29 05:13:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:01,160 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1798 transitions. [2023-11-29 05:13:01,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1798 transitions. [2023-11-29 05:13:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 05:13:01,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:01,166 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:13:01,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:13:01,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:01,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:01,167 INFO L85 PathProgramCache]: Analyzing trace with hash -400227731, now seen corresponding path program 1 times [2023-11-29 05:13:01,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:01,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923510073] [2023-11-29 05:13:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 05:13:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:13:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:01,910 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 05:13:01,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923510073] [2023-11-29 05:13:01,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923510073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:01,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:01,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:13:01,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646740783] [2023-11-29 05:13:01,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:13:01,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:13:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:13:01,912 INFO L87 Difference]: Start difference. First operand 1070 states and 1798 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:07,356 INFO L93 Difference]: Finished difference Result 2464 states and 4203 transitions. [2023-11-29 05:13:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:13:07,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2023-11-29 05:13:07,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:07,367 INFO L225 Difference]: With dead ends: 2464 [2023-11-29 05:13:07,367 INFO L226 Difference]: Without dead ends: 1406 [2023-11-29 05:13:07,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:13:07,375 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1459 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:07,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1480 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 05:13:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-29 05:13:07,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1070. [2023-11-29 05:13:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.7010804321728692) internal successors, (1417), 865 states have internal predecessors, (1417), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1797 transitions. [2023-11-29 05:13:07,637 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1797 transitions. Word has length 97 [2023-11-29 05:13:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:07,637 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1797 transitions. [2023-11-29 05:13:07,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1797 transitions. [2023-11-29 05:13:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 05:13:07,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:07,640 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:13:07,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:13:07,641 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:07,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash 763982608, now seen corresponding path program 1 times [2023-11-29 05:13:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:07,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58507706] [2023-11-29 05:13:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:07,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:13:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:13:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:08,303 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 05:13:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:08,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58507706] [2023-11-29 05:13:08,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58507706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:08,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:08,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:13:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795568183] [2023-11-29 05:13:08,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:08,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:13:08,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:08,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:13:08,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:13:08,306 INFO L87 Difference]: Start difference. First operand 1070 states and 1797 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:14,731 INFO L93 Difference]: Finished difference Result 2464 states and 4202 transitions. [2023-11-29 05:13:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:13:14,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 98 [2023-11-29 05:13:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:14,740 INFO L225 Difference]: With dead ends: 2464 [2023-11-29 05:13:14,740 INFO L226 Difference]: Without dead ends: 1406 [2023-11-29 05:13:14,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:13:14,746 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 980 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:14,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1526 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 05:13:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-29 05:13:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1070. [2023-11-29 05:13:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.6998799519807923) internal successors, (1416), 865 states have internal predecessors, (1416), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1796 transitions. [2023-11-29 05:13:15,035 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1796 transitions. Word has length 98 [2023-11-29 05:13:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:15,036 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1796 transitions. [2023-11-29 05:13:15,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1796 transitions. [2023-11-29 05:13:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 05:13:15,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:15,040 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:13:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:13:15,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:15,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash 505377353, now seen corresponding path program 1 times [2023-11-29 05:13:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:15,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196547654] [2023-11-29 05:13:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:13:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:15,824 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 05:13:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196547654] [2023-11-29 05:13:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196547654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:15,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:15,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:13:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872047699] [2023-11-29 05:13:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:13:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:13:15,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:13:15,826 INFO L87 Difference]: Start difference. First operand 1070 states and 1796 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:21,342 INFO L93 Difference]: Finished difference Result 2424 states and 4126 transitions. [2023-11-29 05:13:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:13:21,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 99 [2023-11-29 05:13:21,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:21,351 INFO L225 Difference]: With dead ends: 2424 [2023-11-29 05:13:21,351 INFO L226 Difference]: Without dead ends: 1406 [2023-11-29 05:13:21,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:13:21,355 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1570 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 3655 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 3655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:21,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1865 Invalid, 4018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [363 Valid, 3655 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 05:13:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-29 05:13:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1070. [2023-11-29 05:13:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.6938775510204083) internal successors, (1411), 865 states have internal predecessors, (1411), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1791 transitions. [2023-11-29 05:13:21,607 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1791 transitions. Word has length 99 [2023-11-29 05:13:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:21,608 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1791 transitions. [2023-11-29 05:13:21,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1791 transitions. [2023-11-29 05:13:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:13:21,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:21,613 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:13:21,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:13:21,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1109256212, now seen corresponding path program 1 times [2023-11-29 05:13:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24595496] [2023-11-29 05:13:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:21,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 05:13:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:22,365 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 05:13:22,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24595496] [2023-11-29 05:13:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24595496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:22,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:22,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:13:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065835675] [2023-11-29 05:13:22,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:13:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:13:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:13:22,367 INFO L87 Difference]: Start difference. First operand 1070 states and 1791 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:27,601 INFO L93 Difference]: Finished difference Result 2424 states and 4121 transitions. [2023-11-29 05:13:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:13:27,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2023-11-29 05:13:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:27,612 INFO L225 Difference]: With dead ends: 2424 [2023-11-29 05:13:27,612 INFO L226 Difference]: Without dead ends: 1406 [2023-11-29 05:13:27,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:13:27,617 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 2026 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 3575 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 4096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 3575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:27,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 1820 Invalid, 4096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 3575 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 05:13:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-29 05:13:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1070. [2023-11-29 05:13:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.687875150060024) internal successors, (1406), 865 states have internal predecessors, (1406), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1786 transitions. [2023-11-29 05:13:27,824 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1786 transitions. Word has length 100 [2023-11-29 05:13:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:27,825 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1786 transitions. [2023-11-29 05:13:27,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1786 transitions. [2023-11-29 05:13:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 05:13:27,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:27,830 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:13:27,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:13:27,831 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:27,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:27,831 INFO L85 PathProgramCache]: Analyzing trace with hash 5036462, now seen corresponding path program 1 times [2023-11-29 05:13:27,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:27,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222406768] [2023-11-29 05:13:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:27,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:13:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:28,537 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 05:13:28,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222406768] [2023-11-29 05:13:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222406768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:28,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:28,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:13:28,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075467778] [2023-11-29 05:13:28,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:28,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:13:28,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:28,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:13:28,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:13:28,539 INFO L87 Difference]: Start difference. First operand 1070 states and 1786 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:34,109 INFO L93 Difference]: Finished difference Result 2424 states and 4116 transitions. [2023-11-29 05:13:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:13:34,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 101 [2023-11-29 05:13:34,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:34,117 INFO L225 Difference]: With dead ends: 2424 [2023-11-29 05:13:34,117 INFO L226 Difference]: Without dead ends: 1406 [2023-11-29 05:13:34,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:13:34,121 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1563 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 3978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:34,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 1857 Invalid, 3978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [365 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 05:13:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-11-29 05:13:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1070. [2023-11-29 05:13:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 833 states have (on average 1.68187274909964) internal successors, (1401), 865 states have internal predecessors, (1401), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1781 transitions. [2023-11-29 05:13:34,344 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1781 transitions. Word has length 101 [2023-11-29 05:13:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:34,344 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1781 transitions. [2023-11-29 05:13:34,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1781 transitions. [2023-11-29 05:13:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:13:34,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:34,349 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:13:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:13:34,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:34,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:34,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1387203782, now seen corresponding path program 1 times [2023-11-29 05:13:34,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:34,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825291986] [2023-11-29 05:13:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:34,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:13:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:34,998 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 05:13:34,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:34,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825291986] [2023-11-29 05:13:34,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825291986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:13:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871939446] [2023-11-29 05:13:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:34,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:13:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:13:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:13:35,000 INFO L87 Difference]: Start difference. First operand 1070 states and 1781 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:40,631 INFO L93 Difference]: Finished difference Result 2435 states and 4127 transitions. [2023-11-29 05:13:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:13:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2023-11-29 05:13:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:40,641 INFO L225 Difference]: With dead ends: 2435 [2023-11-29 05:13:40,641 INFO L226 Difference]: Without dead ends: 1423 [2023-11-29 05:13:40,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:13:40,646 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 2001 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 3269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:40,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 1435 Invalid, 3269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 05:13:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2023-11-29 05:13:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1072. [2023-11-29 05:13:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 835 states have (on average 1.6802395209580838) internal successors, (1403), 867 states have internal predecessors, (1403), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1783 transitions. [2023-11-29 05:13:40,935 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1783 transitions. Word has length 102 [2023-11-29 05:13:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:40,935 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1783 transitions. [2023-11-29 05:13:40,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1783 transitions. [2023-11-29 05:13:40,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:13:40,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:40,940 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:13:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:13:40,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:40,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1784334681, now seen corresponding path program 1 times [2023-11-29 05:13:40,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:40,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17255405] [2023-11-29 05:13:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:40,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:13:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:41,621 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 05:13:41,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:41,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17255405] [2023-11-29 05:13:41,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17255405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:41,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:41,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:13:41,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418342129] [2023-11-29 05:13:41,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:41,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:13:41,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:13:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:13:41,624 INFO L87 Difference]: Start difference. First operand 1072 states and 1783 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:47,119 INFO L93 Difference]: Finished difference Result 2430 states and 4117 transitions. [2023-11-29 05:13:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:13:47,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2023-11-29 05:13:47,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:47,127 INFO L225 Difference]: With dead ends: 2430 [2023-11-29 05:13:47,127 INFO L226 Difference]: Without dead ends: 1410 [2023-11-29 05:13:47,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:13:47,130 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 2016 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 4063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:47,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2099 Valid, 1834 Invalid, 4063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 05:13:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2023-11-29 05:13:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1072. [2023-11-29 05:13:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 835 states have (on average 1.674251497005988) internal successors, (1398), 867 states have internal predecessors, (1398), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1778 transitions. [2023-11-29 05:13:47,398 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1778 transitions. Word has length 102 [2023-11-29 05:13:47,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:47,398 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1778 transitions. [2023-11-29 05:13:47,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1778 transitions. [2023-11-29 05:13:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:13:47,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:47,401 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:13:47,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:13:47,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:47,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1504474032, now seen corresponding path program 1 times [2023-11-29 05:13:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:47,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251786918] [2023-11-29 05:13:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:13:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:48,036 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 05:13:48,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251786918] [2023-11-29 05:13:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251786918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:48,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:13:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799643894] [2023-11-29 05:13:48,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:13:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:13:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:13:48,038 INFO L87 Difference]: Start difference. First operand 1072 states and 1778 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:53,571 INFO L93 Difference]: Finished difference Result 2439 states and 4124 transitions. [2023-11-29 05:13:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:13:53,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2023-11-29 05:13:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:53,578 INFO L225 Difference]: With dead ends: 2439 [2023-11-29 05:13:53,578 INFO L226 Difference]: Without dead ends: 1427 [2023-11-29 05:13:53,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:13:53,581 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1997 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:53,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 1446 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 05:13:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2023-11-29 05:13:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1075. [2023-11-29 05:13:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 838 states have (on average 1.671837708830549) internal successors, (1401), 870 states have internal predecessors, (1401), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:13:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1781 transitions. [2023-11-29 05:13:53,827 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1781 transitions. Word has length 103 [2023-11-29 05:13:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:53,827 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1781 transitions. [2023-11-29 05:13:53,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1781 transitions. [2023-11-29 05:13:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:13:53,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:53,830 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:13:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:13:53,830 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:53,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1536590573, now seen corresponding path program 1 times [2023-11-29 05:13:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166728610] [2023-11-29 05:13:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:13:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:13:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:13:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:13:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:13:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:13:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:54,493 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 05:13:54,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:54,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166728610] [2023-11-29 05:13:54,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166728610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:54,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:54,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:13:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529017984] [2023-11-29 05:13:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:54,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:13:54,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:13:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:13:54,495 INFO L87 Difference]: Start difference. First operand 1075 states and 1781 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:13:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:59,936 INFO L93 Difference]: Finished difference Result 2439 states and 4121 transitions. [2023-11-29 05:13:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:13:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2023-11-29 05:13:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:59,944 INFO L225 Difference]: With dead ends: 2439 [2023-11-29 05:13:59,944 INFO L226 Difference]: Without dead ends: 1416 [2023-11-29 05:13:59,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:13:59,948 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 2003 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 3526 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 4040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 3526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:59,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 1832 Invalid, 4040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 3526 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 05:13:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-11-29 05:14:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1075. [2023-11-29 05:14:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 838 states have (on average 1.665871121718377) internal successors, (1396), 870 states have internal predecessors, (1396), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:14:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1776 transitions. [2023-11-29 05:14:00,197 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1776 transitions. Word has length 103 [2023-11-29 05:14:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:00,197 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1776 transitions. [2023-11-29 05:14:00,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1776 transitions. [2023-11-29 05:14:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 05:14:00,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:00,199 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:14:00,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:14:00,200 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:00,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash -244285121, now seen corresponding path program 1 times [2023-11-29 05:14:00,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:00,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560504226] [2023-11-29 05:14:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:00,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 05:14:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:14:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:14:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,852 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 05:14:00,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560504226] [2023-11-29 05:14:00,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560504226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:00,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:00,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:14:00,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493529587] [2023-11-29 05:14:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:00,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:14:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:14:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:14:00,854 INFO L87 Difference]: Start difference. First operand 1075 states and 1776 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:06,449 INFO L93 Difference]: Finished difference Result 2445 states and 4123 transitions. [2023-11-29 05:14:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:14:06,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2023-11-29 05:14:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:06,457 INFO L225 Difference]: With dead ends: 2445 [2023-11-29 05:14:06,457 INFO L226 Difference]: Without dead ends: 1433 [2023-11-29 05:14:06,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:14:06,461 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1511 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:06,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 1485 Invalid, 3126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 05:14:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2023-11-29 05:14:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1079. [2023-11-29 05:14:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 842 states have (on average 1.66270783847981) internal successors, (1400), 874 states have internal predecessors, (1400), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:14:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1780 transitions. [2023-11-29 05:14:06,695 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1780 transitions. Word has length 104 [2023-11-29 05:14:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:06,696 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1780 transitions. [2023-11-29 05:14:06,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1780 transitions. [2023-11-29 05:14:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 05:14:06,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:06,698 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:14:06,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:14:06,698 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:06,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:06,699 INFO L85 PathProgramCache]: Analyzing trace with hash 244313758, now seen corresponding path program 1 times [2023-11-29 05:14:06,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:06,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630458025] [2023-11-29 05:14:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 05:14:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:14:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:14:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,394 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 05:14:07,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:07,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630458025] [2023-11-29 05:14:07,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630458025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:07,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:07,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:14:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986663539] [2023-11-29 05:14:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:14:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:14:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:14:07,396 INFO L87 Difference]: Start difference. First operand 1079 states and 1780 transitions. Second operand has 11 states, 10 states have (on average 6.6) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:14:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:14,573 INFO L93 Difference]: Finished difference Result 2454 states and 4134 transitions. [2023-11-29 05:14:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:14:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 104 [2023-11-29 05:14:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:14,582 INFO L225 Difference]: With dead ends: 2454 [2023-11-29 05:14:14,582 INFO L226 Difference]: Without dead ends: 1444 [2023-11-29 05:14:14,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:14:14,587 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 2008 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 5990 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 6520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 5990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:14,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 2984 Invalid, 6520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [530 Valid, 5990 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 05:14:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2023-11-29 05:14:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1089. [2023-11-29 05:14:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 849 states have (on average 1.6595995288574794) internal successors, (1409), 883 states have internal predecessors, (1409), 189 states have call successors, (189), 46 states have call predecessors, (189), 50 states have return successors, (195), 183 states have call predecessors, (195), 184 states have call successors, (195) [2023-11-29 05:14:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1793 transitions. [2023-11-29 05:14:14,893 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1793 transitions. Word has length 104 [2023-11-29 05:14:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:14,893 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1793 transitions. [2023-11-29 05:14:14,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:14:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1793 transitions. [2023-11-29 05:14:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 05:14:14,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:14,896 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:14:14,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:14:14,896 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:14,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:14,897 INFO L85 PathProgramCache]: Analyzing trace with hash -197440737, now seen corresponding path program 1 times [2023-11-29 05:14:14,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:14,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285928601] [2023-11-29 05:14:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:14,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 05:14:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:14:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:14:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,400 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 05:14:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285928601] [2023-11-29 05:14:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285928601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:15,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:15,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:14:15,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537531957] [2023-11-29 05:14:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:15,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:14:15,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:14:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:14:15,401 INFO L87 Difference]: Start difference. First operand 1089 states and 1793 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:20,824 INFO L93 Difference]: Finished difference Result 2509 states and 4200 transitions. [2023-11-29 05:14:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:20,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2023-11-29 05:14:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:20,833 INFO L225 Difference]: With dead ends: 2509 [2023-11-29 05:14:20,833 INFO L226 Difference]: Without dead ends: 1414 [2023-11-29 05:14:20,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:14:20,837 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1421 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 3148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:20,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1496 Invalid, 3148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 05:14:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2023-11-29 05:14:21,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1071. [2023-11-29 05:14:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 834 states have (on average 1.6642685851318946) internal successors, (1388), 866 states have internal predecessors, (1388), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:14:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1768 transitions. [2023-11-29 05:14:21,099 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1768 transitions. Word has length 104 [2023-11-29 05:14:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:21,099 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1768 transitions. [2023-11-29 05:14:21,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1768 transitions. [2023-11-29 05:14:21,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 05:14:21,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:21,102 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:14:21,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:14:21,103 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:21,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash 767464821, now seen corresponding path program 1 times [2023-11-29 05:14:21,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:21,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285114712] [2023-11-29 05:14:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 05:14:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:14:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:14:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:21,708 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 05:14:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285114712] [2023-11-29 05:14:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285114712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:21,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:21,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:14:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587775838] [2023-11-29 05:14:21,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:14:21,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:14:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:14:21,710 INFO L87 Difference]: Start difference. First operand 1071 states and 1768 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:27,774 INFO L93 Difference]: Finished difference Result 2443 states and 4114 transitions. [2023-11-29 05:14:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:14:27,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2023-11-29 05:14:27,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:27,783 INFO L225 Difference]: With dead ends: 2443 [2023-11-29 05:14:27,783 INFO L226 Difference]: Without dead ends: 1431 [2023-11-29 05:14:27,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:14:27,787 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1005 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:27,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1531 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 05:14:27,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-11-29 05:14:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1076. [2023-11-29 05:14:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 839 states have (on average 1.6603098927294397) internal successors, (1393), 871 states have internal predecessors, (1393), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:14:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1773 transitions. [2023-11-29 05:14:28,053 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1773 transitions. Word has length 105 [2023-11-29 05:14:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:28,053 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1773 transitions. [2023-11-29 05:14:28,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1773 transitions. [2023-11-29 05:14:28,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 05:14:28,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:28,055 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:14:28,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:14:28,056 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:28,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:28,056 INFO L85 PathProgramCache]: Analyzing trace with hash -552511086, now seen corresponding path program 1 times [2023-11-29 05:14:28,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:28,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204632586] [2023-11-29 05:14:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:28,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:14:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:14:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:14:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,616 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 05:14:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:28,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204632586] [2023-11-29 05:14:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204632586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:28,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:28,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:14:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534289472] [2023-11-29 05:14:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:28,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:14:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:14:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:14:28,619 INFO L87 Difference]: Start difference. First operand 1076 states and 1773 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:33,988 INFO L93 Difference]: Finished difference Result 2444 states and 4112 transitions. [2023-11-29 05:14:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:14:33,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 106 [2023-11-29 05:14:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:33,998 INFO L225 Difference]: With dead ends: 2444 [2023-11-29 05:14:33,998 INFO L226 Difference]: Without dead ends: 1412 [2023-11-29 05:14:34,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:14:34,002 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1915 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:34,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 1463 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 05:14:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2023-11-29 05:14:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1076. [2023-11-29 05:14:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 839 states have (on average 1.6555423122765196) internal successors, (1389), 871 states have internal predecessors, (1389), 188 states have call successors, (188), 46 states have call predecessors, (188), 48 states have return successors, (192), 182 states have call predecessors, (192), 183 states have call successors, (192) [2023-11-29 05:14:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1769 transitions. [2023-11-29 05:14:34,274 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1769 transitions. Word has length 106 [2023-11-29 05:14:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:34,275 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1769 transitions. [2023-11-29 05:14:34,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1769 transitions. [2023-11-29 05:14:34,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 05:14:34,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:34,277 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:14:34,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:14:34,277 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:34,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:34,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2119269036, now seen corresponding path program 1 times [2023-11-29 05:14:34,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:34,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653093154] [2023-11-29 05:14:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:14:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:14:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:14:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,907 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 05:14:34,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653093154] [2023-11-29 05:14:34,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653093154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:34,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:14:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211192926] [2023-11-29 05:14:34,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:34,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:14:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:14:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:14:34,909 INFO L87 Difference]: Start difference. First operand 1076 states and 1769 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:41,523 INFO L93 Difference]: Finished difference Result 2439 states and 4129 transitions. [2023-11-29 05:14:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:14:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 106 [2023-11-29 05:14:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:41,530 INFO L225 Difference]: With dead ends: 2439 [2023-11-29 05:14:41,530 INFO L226 Difference]: Without dead ends: 1434 [2023-11-29 05:14:41,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:14:41,534 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 2717 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 3531 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2727 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 4374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 3531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:41,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2727 Valid, 1755 Invalid, 4374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 3531 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 05:14:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2023-11-29 05:14:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1088. [2023-11-29 05:14:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 849 states have (on average 1.6478209658421672) internal successors, (1399), 879 states have internal predecessors, (1399), 188 states have call successors, (188), 46 states have call predecessors, (188), 50 states have return successors, (198), 186 states have call predecessors, (198), 183 states have call successors, (198) [2023-11-29 05:14:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1785 transitions. [2023-11-29 05:14:41,848 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1785 transitions. Word has length 106 [2023-11-29 05:14:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:41,848 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1785 transitions. [2023-11-29 05:14:41,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:14:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1785 transitions. [2023-11-29 05:14:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 05:14:41,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:41,850 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:14:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:14:41,851 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:41,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:41,851 INFO L85 PathProgramCache]: Analyzing trace with hash 148164789, now seen corresponding path program 1 times [2023-11-29 05:14:41,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:41,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554370241] [2023-11-29 05:14:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:41,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:14:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:14:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 05:14:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:14:42,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554370241] [2023-11-29 05:14:42,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554370241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:42,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:42,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:14:42,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202459784] [2023-11-29 05:14:42,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:42,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:14:42,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:42,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:14:42,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:14:42,617 INFO L87 Difference]: Start difference. First operand 1088 states and 1785 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:14:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:49,844 INFO L93 Difference]: Finished difference Result 2453 states and 4213 transitions. [2023-11-29 05:14:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:14:49,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 107 [2023-11-29 05:14:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:49,850 INFO L225 Difference]: With dead ends: 2453 [2023-11-29 05:14:49,850 INFO L226 Difference]: Without dead ends: 1436 [2023-11-29 05:14:49,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:14:49,853 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 2224 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:49,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 1745 Invalid, 4469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [717 Valid, 3752 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 05:14:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2023-11-29 05:14:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1096. [2023-11-29 05:14:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 855 states have (on average 1.6432748538011697) internal successors, (1405), 885 states have internal predecessors, (1405), 188 states have call successors, (188), 48 states have call predecessors, (188), 52 states have return successors, (200), 186 states have call predecessors, (200), 183 states have call successors, (200) [2023-11-29 05:14:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1793 transitions. [2023-11-29 05:14:50,157 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1793 transitions. Word has length 107 [2023-11-29 05:14:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:50,158 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1793 transitions. [2023-11-29 05:14:50,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:14:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1793 transitions. [2023-11-29 05:14:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 05:14:50,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:50,160 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:50,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:14:50,160 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:50,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:50,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1964554775, now seen corresponding path program 1 times [2023-11-29 05:14:50,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:50,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264467779] [2023-11-29 05:14:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:14:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:14:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:14:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:14:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:14:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:14:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:14:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:50,841 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 05:14:50,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:50,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264467779] [2023-11-29 05:14:50,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264467779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:50,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:50,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:14:50,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835137016] [2023-11-29 05:14:50,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:50,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:14:50,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:50,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:14:50,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:14:50,843 INFO L87 Difference]: Start difference. First operand 1096 states and 1793 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:14:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:57,616 INFO L93 Difference]: Finished difference Result 2471 states and 4223 transitions. [2023-11-29 05:14:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:14:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 109 [2023-11-29 05:14:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:57,624 INFO L225 Difference]: With dead ends: 2471 [2023-11-29 05:14:57,624 INFO L226 Difference]: Without dead ends: 1446 [2023-11-29 05:14:57,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:14:57,628 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 2688 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 4507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:57,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 1673 Invalid, 4507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [880 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 05:14:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-11-29 05:14:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1106. [2023-11-29 05:14:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 863 states have (on average 1.6373117033603708) internal successors, (1413), 893 states have internal predecessors, (1413), 188 states have call successors, (188), 50 states have call predecessors, (188), 54 states have return successors, (202), 186 states have call predecessors, (202), 183 states have call successors, (202) [2023-11-29 05:14:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1803 transitions. [2023-11-29 05:14:58,023 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1803 transitions. Word has length 109 [2023-11-29 05:14:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:58,024 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1803 transitions. [2023-11-29 05:14:58,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:14:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1803 transitions. [2023-11-29 05:14:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 05:14:58,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:58,026 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:14:58,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:14:58,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:58,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:58,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1073549621, now seen corresponding path program 1 times [2023-11-29 05:14:58,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:58,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476019599] [2023-11-29 05:14:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:58,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:14:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:14:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:14:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:14:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:14:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:14:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:14:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:14:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:14:58,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:58,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476019599] [2023-11-29 05:14:58,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476019599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:58,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:58,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:14:58,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561669280] [2023-11-29 05:14:58,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:58,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:14:58,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:58,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:14:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:14:58,597 INFO L87 Difference]: Start difference. First operand 1106 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:15:05,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:05,382 INFO L93 Difference]: Finished difference Result 2493 states and 4237 transitions. [2023-11-29 05:15:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:15:05,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 111 [2023-11-29 05:15:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:05,388 INFO L225 Difference]: With dead ends: 2493 [2023-11-29 05:15:05,389 INFO L226 Difference]: Without dead ends: 1458 [2023-11-29 05:15:05,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:15:05,392 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 2220 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 3691 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 4394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 3691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:05,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 1740 Invalid, 4394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [703 Valid, 3691 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 05:15:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2023-11-29 05:15:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1118. [2023-11-29 05:15:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 873 states have (on average 1.6300114547537228) internal successors, (1423), 903 states have internal predecessors, (1423), 188 states have call successors, (188), 52 states have call predecessors, (188), 56 states have return successors, (204), 186 states have call predecessors, (204), 183 states have call successors, (204) [2023-11-29 05:15:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1815 transitions. [2023-11-29 05:15:05,712 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1815 transitions. Word has length 111 [2023-11-29 05:15:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:05,712 INFO L495 AbstractCegarLoop]: Abstraction has 1118 states and 1815 transitions. [2023-11-29 05:15:05,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:15:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1815 transitions. [2023-11-29 05:15:05,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:15:05,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:05,714 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:15:05,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:15:05,715 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:05,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1869266145, now seen corresponding path program 1 times [2023-11-29 05:15:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:05,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311265342] [2023-11-29 05:15:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:05,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:15:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:15:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 05:15:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:15:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 05:15:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:15:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:15:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:15:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:15:06,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:06,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311265342] [2023-11-29 05:15:06,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311265342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:06,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:15:06,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:15:06,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511949761] [2023-11-29 05:15:06,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:06,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:15:06,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:06,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:15:06,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:15:06,333 INFO L87 Difference]: Start difference. First operand 1118 states and 1815 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:15:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:13,401 INFO L93 Difference]: Finished difference Result 2519 states and 4255 transitions. [2023-11-29 05:15:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:15:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 113 [2023-11-29 05:15:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:13,407 INFO L225 Difference]: With dead ends: 2519 [2023-11-29 05:15:13,407 INFO L226 Difference]: Without dead ends: 1472 [2023-11-29 05:15:13,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:15:13,410 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1766 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 4373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:13,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 1778 Invalid, 4373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [553 Valid, 3820 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 05:15:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2023-11-29 05:15:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1132. [2023-11-29 05:15:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 885 states have (on average 1.6214689265536724) internal successors, (1435), 915 states have internal predecessors, (1435), 188 states have call successors, (188), 54 states have call predecessors, (188), 58 states have return successors, (206), 186 states have call predecessors, (206), 183 states have call successors, (206) [2023-11-29 05:15:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1829 transitions. [2023-11-29 05:15:13,718 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1829 transitions. Word has length 113 [2023-11-29 05:15:13,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:13,719 INFO L495 AbstractCegarLoop]: Abstraction has 1132 states and 1829 transitions. [2023-11-29 05:15:13,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:15:13,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1829 transitions. [2023-11-29 05:15:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:15:13,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:13,721 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:15:13,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:15:13,721 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:13,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash -854585419, now seen corresponding path program 1 times [2023-11-29 05:15:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:13,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094820168] [2023-11-29 05:15:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:15:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:15:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:15:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:15:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:15:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:15:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:15:14,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:14,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094820168] [2023-11-29 05:15:14,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094820168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:14,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135684819] [2023-11-29 05:15:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:14,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:14,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:14,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:14,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:15:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:15:14,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:15:15,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:15,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135684819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:15,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:15,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-29 05:15:15,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71535259] [2023-11-29 05:15:15,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:15,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:15:15,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:15,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:15:15,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:15:15,142 INFO L87 Difference]: Start difference. First operand 1132 states and 1829 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:15:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:18,475 INFO L93 Difference]: Finished difference Result 3682 states and 6188 transitions. [2023-11-29 05:15:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:15:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2023-11-29 05:15:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:18,484 INFO L225 Difference]: With dead ends: 3682 [2023-11-29 05:15:18,485 INFO L226 Difference]: Without dead ends: 2621 [2023-11-29 05:15:18,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:15:18,487 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 3421 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 3592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:18,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3560 Valid, 1328 Invalid, 3592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [793 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:15:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2023-11-29 05:15:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2339. [2023-11-29 05:15:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 1792 states have (on average 1.6305803571428572) internal successors, (2922), 1860 states have internal predecessors, (2922), 428 states have call successors, (428), 103 states have call predecessors, (428), 118 states have return successors, (514), 433 states have call predecessors, (514), 423 states have call successors, (514) [2023-11-29 05:15:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3864 transitions. [2023-11-29 05:15:19,366 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3864 transitions. Word has length 115 [2023-11-29 05:15:19,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:19,366 INFO L495 AbstractCegarLoop]: Abstraction has 2339 states and 3864 transitions. [2023-11-29 05:15:19,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:15:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3864 transitions. [2023-11-29 05:15:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 05:15:19,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:19,368 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:15:19,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:15:19,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 05:15:19,569 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:19,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash 225667527, now seen corresponding path program 1 times [2023-11-29 05:15:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962229040] [2023-11-29 05:15:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:19,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:15:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:15:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:15:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:15:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:15:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:15:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:15:20,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962229040] [2023-11-29 05:15:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962229040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801601688] [2023-11-29 05:15:20,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:20,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:20,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:20,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:20,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:15:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:20,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:15:20,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:15:21,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801601688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:21,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:21,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-29 05:15:21,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097331960] [2023-11-29 05:15:21,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:21,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:15:21,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:15:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:15:21,016 INFO L87 Difference]: Start difference. First operand 2339 states and 3864 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:15:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:25,945 INFO L93 Difference]: Finished difference Result 7990 states and 13779 transitions. [2023-11-29 05:15:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:15:25,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2023-11-29 05:15:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:25,968 INFO L225 Difference]: With dead ends: 7990 [2023-11-29 05:15:25,968 INFO L226 Difference]: Without dead ends: 5722 [2023-11-29 05:15:25,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:15:25,976 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 3424 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3563 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:25,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3563 Valid, 1311 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:15:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2023-11-29 05:15:28,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5021. [2023-11-29 05:15:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 3764 states have (on average 1.6301806588735388) internal successors, (6136), 3924 states have internal predecessors, (6136), 1012 states have call successors, (1012), 201 states have call predecessors, (1012), 244 states have return successors, (1306), 1039 states have call predecessors, (1306), 1007 states have call successors, (1306) [2023-11-29 05:15:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 8454 transitions. [2023-11-29 05:15:28,155 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 8454 transitions. Word has length 116 [2023-11-29 05:15:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:28,155 INFO L495 AbstractCegarLoop]: Abstraction has 5021 states and 8454 transitions. [2023-11-29 05:15:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:15:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 8454 transitions. [2023-11-29 05:15:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:15:28,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:28,157 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:15:28,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:15:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 05:15:28,358 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:28,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash 472041977, now seen corresponding path program 1 times [2023-11-29 05:15:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:28,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108947423] [2023-11-29 05:15:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:28,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:15:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:28,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:15:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:15:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:15:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:15:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:15:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:15:29,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:29,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108947423] [2023-11-29 05:15:29,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108947423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:29,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545948877] [2023-11-29 05:15:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:29,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:29,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:29,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:29,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:15:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:29,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:15:29,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:15:29,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:29,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545948877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:29,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:29,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-29 05:15:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314439545] [2023-11-29 05:15:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:29,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:15:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:15:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:15:29,879 INFO L87 Difference]: Start difference. First operand 5021 states and 8454 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:15:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:38,911 INFO L93 Difference]: Finished difference Result 17898 states and 31755 transitions. [2023-11-29 05:15:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:15:38,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2023-11-29 05:15:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:38,986 INFO L225 Difference]: With dead ends: 17898 [2023-11-29 05:15:38,986 INFO L226 Difference]: Without dead ends: 12948 [2023-11-29 05:15:39,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:15:39,008 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 2865 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 3487 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3004 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 3487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:39,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3004 Valid, 1475 Invalid, 4192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 3487 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 05:15:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2023-11-29 05:15:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 11149. [2023-11-29 05:15:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11149 states, 8166 states have (on average 1.6247856967915748) internal successors, (13268), 8552 states have internal predecessors, (13268), 2470 states have call successors, (2470), 397 states have call predecessors, (2470), 512 states have return successors, (3444), 2565 states have call predecessors, (3444), 2465 states have call successors, (3444) [2023-11-29 05:15:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11149 states to 11149 states and 19182 transitions. [2023-11-29 05:15:43,778 INFO L78 Accepts]: Start accepts. Automaton has 11149 states and 19182 transitions. Word has length 117 [2023-11-29 05:15:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:43,778 INFO L495 AbstractCegarLoop]: Abstraction has 11149 states and 19182 transitions. [2023-11-29 05:15:43,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:15:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 11149 states and 19182 transitions. [2023-11-29 05:15:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 05:15:43,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:43,781 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:15:43,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:15:43,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 05:15:43,981 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:43,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash 637986827, now seen corresponding path program 1 times [2023-11-29 05:15:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207000605] [2023-11-29 05:15:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:15:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:15:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:15:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:15:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:15:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:15:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:15:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:15:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207000605] [2023-11-29 05:15:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207000605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112308240] [2023-11-29 05:15:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:45,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:45,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:45,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:45,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:15:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:45,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:15:45,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:15:45,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:45,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112308240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:45,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:45,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-29 05:15:45,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006597972] [2023-11-29 05:15:45,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:45,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:15:45,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:45,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:15:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:15:45,535 INFO L87 Difference]: Start difference. First operand 11149 states and 19182 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:16:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:16:03,900 INFO L93 Difference]: Finished difference Result 41406 states and 76457 transitions. [2023-11-29 05:16:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:16:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2023-11-29 05:16:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:16:04,139 INFO L225 Difference]: With dead ends: 41406 [2023-11-29 05:16:04,139 INFO L226 Difference]: Without dead ends: 30328 [2023-11-29 05:16:04,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:16:04,229 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 3434 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:16:04,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3573 Valid, 1297 Invalid, 3593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:16:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30328 states. [2023-11-29 05:16:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30328 to 25585. [2023-11-29 05:16:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25585 states, 18300 states have (on average 1.6172677595628415) internal successors, (29596), 19248 states have internal predecessors, (29596), 6192 states have call successors, (6192), 789 states have call predecessors, (6192), 1092 states have return successors, (9562), 6495 states have call predecessors, (9562), 6187 states have call successors, (9562) [2023-11-29 05:16:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25585 states to 25585 states and 45350 transitions. [2023-11-29 05:16:16,574 INFO L78 Accepts]: Start accepts. Automaton has 25585 states and 45350 transitions. Word has length 118 [2023-11-29 05:16:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:16,575 INFO L495 AbstractCegarLoop]: Abstraction has 25585 states and 45350 transitions. [2023-11-29 05:16:16,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:16:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 25585 states and 45350 transitions. [2023-11-29 05:16:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 05:16:16,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:16,577 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:16:16,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:16:16,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 05:16:16,778 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:16,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1689385923, now seen corresponding path program 1 times [2023-11-29 05:16:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:16,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971195079] [2023-11-29 05:16:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:16:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:16:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:16:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:16:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:16:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:16:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:16:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:16:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:16:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:16:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:16:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:16:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:16:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:16:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:16:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:16:17,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:16:17,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971195079] [2023-11-29 05:16:17,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971195079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:16:17,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647169514] [2023-11-29 05:16:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:17,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:17,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:17,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:17,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:16:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:17,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:16:17,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:16:18,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:16:18,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647169514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:16:18,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:16:18,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-29 05:16:18,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153136870] [2023-11-29 05:16:18,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:16:18,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:16:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:16:18,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:16:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:16:18,096 INFO L87 Difference]: Start difference. First operand 25585 states and 45350 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:17:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:01,125 INFO L93 Difference]: Finished difference Result 98970 states and 194579 transitions. [2023-11-29 05:17:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:17:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2023-11-29 05:17:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:01,820 INFO L225 Difference]: With dead ends: 98970 [2023-11-29 05:17:01,820 INFO L226 Difference]: Without dead ends: 73456 [2023-11-29 05:17:02,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:17:02,055 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 3434 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:02,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3573 Valid, 1297 Invalid, 3593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:17:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73456 states. [2023-11-29 05:17:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73456 to 60677. [2023-11-29 05:17:34,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60677 states, 42434 states have (on average 1.6095583730027807) internal successors, (68300), 44792 states have internal predecessors, (68300), 15866 states have call successors, (15866), 1573 states have call predecessors, (15866), 2376 states have return successors, (28348), 16801 states have call predecessors, (28348), 15861 states have call successors, (28348) [2023-11-29 05:17:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60677 states to 60677 states and 112514 transitions. [2023-11-29 05:17:34,700 INFO L78 Accepts]: Start accepts. Automaton has 60677 states and 112514 transitions. Word has length 119 [2023-11-29 05:17:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:34,701 INFO L495 AbstractCegarLoop]: Abstraction has 60677 states and 112514 transitions. [2023-11-29 05:17:34,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:17:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 60677 states and 112514 transitions. [2023-11-29 05:17:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 05:17:34,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:34,705 INFO L195 NwaCegarLoop]: trace histogram [3, 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 05:17:34,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:17:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:17:34,905 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:34,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1239600551, now seen corresponding path program 1 times [2023-11-29 05:17:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515897312] [2023-11-29 05:17:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:17:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:17:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:17:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:17:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:17:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:17:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:17:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:17:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:17:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:17:35,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:35,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515897312] [2023-11-29 05:17:35,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515897312] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:17:35,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317870158] [2023-11-29 05:17:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:35,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:17:35,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:17:35,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:17:35,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:17:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:35,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:17:35,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:17:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:17:36,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:17:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317870158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:17:36,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:17:36,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2023-11-29 05:17:36,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724547471] [2023-11-29 05:17:36,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:17:36,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:17:36,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:17:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:17:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:17:36,011 INFO L87 Difference]: Start difference. First operand 60677 states and 112514 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 05:18:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:38,859 INFO L93 Difference]: Finished difference Result 181879 states and 358481 transitions. [2023-11-29 05:18:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2023-11-29 05:18:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:40,248 INFO L225 Difference]: With dead ends: 181879 [2023-11-29 05:18:40,248 INFO L226 Difference]: Without dead ends: 121273 [2023-11-29 05:18:40,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:40,650 INFO L413 NwaCegarLoop]: 1080 mSDtfsCounter, 877 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:40,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1885 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121273 states. [2023-11-29 05:19:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121273 to 121271. [2023-11-29 05:19:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121271 states, 84799 states have (on average 1.6034269272043302) internal successors, (135969), 89511 states have internal predecessors, (135969), 31722 states have call successors, (31722), 3141 states have call predecessors, (31722), 4749 states have return successors, (71425), 33598 states have call predecessors, (71425), 31717 states have call successors, (71425) [2023-11-29 05:19:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121271 states to 121271 states and 239116 transitions. [2023-11-29 05:19:43,048 INFO L78 Accepts]: Start accepts. Automaton has 121271 states and 239116 transitions. Word has length 119 [2023-11-29 05:19:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:43,048 INFO L495 AbstractCegarLoop]: Abstraction has 121271 states and 239116 transitions. [2023-11-29 05:19:43,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 05:19:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 121271 states and 239116 transitions. [2023-11-29 05:19:43,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:19:43,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:43,051 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:19:43,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:19:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:19:43,252 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:43,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash 226946530, now seen corresponding path program 1 times [2023-11-29 05:19:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:43,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788126099] [2023-11-29 05:19:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:19:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:19:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:19:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:19:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:19:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:19:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:19:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:19:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:19:44,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:44,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788126099] [2023-11-29 05:19:44,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788126099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:19:44,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205657156] [2023-11-29 05:19:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:44,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:19:44,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:19:44,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:19:44,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:19:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:44,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:19:44,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:19:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:19:44,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:19:44,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205657156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:44,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:19:44,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2023-11-29 05:19:44,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106854504] [2023-11-29 05:19:44,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:44,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:44,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:19:44,702 INFO L87 Difference]: Start difference. First operand 121271 states and 239116 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 05:21:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:21:49,732 INFO L93 Difference]: Finished difference Result 363663 states and 797158 transitions. [2023-11-29 05:21:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:21:49,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2023-11-29 05:21:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:21:53,048 INFO L225 Difference]: With dead ends: 363663 [2023-11-29 05:21:53,049 INFO L226 Difference]: Without dead ends: 242463 [2023-11-29 05:21:54,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:21:54,407 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 879 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:21:54,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1684 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:21:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242463 states. [2023-11-29 05:23:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242463 to 242460. [2023-11-29 05:23:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242460 states, 169530 states have (on average 1.5971155547690674) internal successors, (270759), 178950 states have internal predecessors, (270759), 63434 states have call successors, (63434), 6277 states have call predecessors, (63434), 9495 states have return successors, (197441), 67192 states have call predecessors, (197441), 63429 states have call successors, (197441) [2023-11-29 05:24:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242460 states to 242460 states and 531634 transitions. [2023-11-29 05:24:02,490 INFO L78 Accepts]: Start accepts. Automaton has 242460 states and 531634 transitions. Word has length 120 [2023-11-29 05:24:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:02,491 INFO L495 AbstractCegarLoop]: Abstraction has 242460 states and 531634 transitions. [2023-11-29 05:24:02,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 05:24:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 242460 states and 531634 transitions. [2023-11-29 05:24:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:24:02,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:02,495 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 05:24:02,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:24:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:24:02,695 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:02,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1554730309, now seen corresponding path program 1 times [2023-11-29 05:24:02,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:02,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090622012] [2023-11-29 05:24:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:02,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:24:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:24:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:24:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:24:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:24:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:24:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:24:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:24:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:24:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:24:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:24:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 05:24:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:24:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:24:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:24:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:24:03,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090622012] [2023-11-29 05:24:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090622012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315984608] [2023-11-29 05:24:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:03,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:03,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:03,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78e73ec3-06bb-4c8b-874e-c6e218d294c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:24:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:24:03,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:24:03,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:24:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315984608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:24:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2023-11-29 05:24:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703284070] [2023-11-29 05:24:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:03,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:24:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:24:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:24:03,897 INFO L87 Difference]: Start difference. First operand 242460 states and 531634 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14)