./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB --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 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:24:39,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:24:39,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:24:39,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:24:39,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:24:39,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:24:39,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:24:39,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:24:39,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:24:39,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:24:39,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:24:39,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:24:39,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:24:39,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:24:39,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:24:39,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:24:39,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:24:39,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:24:39,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:24:39,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:24:39,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:24:39,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:24:39,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:24:39,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:24:39,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:24:39,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:24:39,655 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:24:39,655 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:24:39,655 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:24:39,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:39,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:24:39,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:39,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:39,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:24:39,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:39,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:24:39,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:39,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:39,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:24:39,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:24:39,658 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb [2024-11-27 23:24:40,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:24:40,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:24:40,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:24:40,016 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:24:40,017 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:24:40,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2024-11-27 23:24:42,995 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/data/bd621ace2/a35e77c7ba2145e0937956e52955071a/FLAGd54d5430e [2024-11-27 23:24:43,460 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:24:43,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2024-11-27 23:24:43,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/data/bd621ace2/a35e77c7ba2145e0937956e52955071a/FLAGd54d5430e [2024-11-27 23:24:43,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/data/bd621ace2/a35e77c7ba2145e0937956e52955071a [2024-11-27 23:24:43,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:24:43,531 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:24:43,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:43,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:24:43,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:24:43,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:43" (1/1) ... [2024-11-27 23:24:43,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed96291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:43, skipping insertion in model container [2024-11-27 23:24:43,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:43" (1/1) ... [2024-11-27 23:24:43,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:24:43,974 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2024-11-27 23:24:44,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:44,431 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:24:44,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-27 23:24:44,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [414] [2024-11-27 23:24:44,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [423] [2024-11-27 23:24:44,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2054] [2024-11-27 23:24:44,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2148] [2024-11-27 23:24:44,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2164] [2024-11-27 23:24:44,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2282] [2024-11-27 23:24:44,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2463] [2024-11-27 23:24:44,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2816] [2024-11-27 23:24:44,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3481] [2024-11-27 23:24:44,492 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2024-11-27 23:24:44,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:44,666 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:24:44,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44 WrapperNode [2024-11-27 23:24:44,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:44,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:44,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:24:44,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:24:44,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,787 INFO L138 Inliner]: procedures = 97, calls = 350, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 953 [2024-11-27 23:24:44,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:44,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:24:44,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:24:44,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:24:44,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,854 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-27 23:24:44,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,895 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:24:44,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:24:44,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:24:44,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:24:44,981 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (1/1) ... [2024-11-27 23:24:44,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:45,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:45,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:24:45,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:24:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-27 23:24:45,080 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-27 23:24:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-27 23:24:45,080 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-27 23:24:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-27 23:24:45,081 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-27 23:24:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-27 23:24:45,081 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-27 23:24:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-27 23:24:45,082 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-27 23:24:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-27 23:24:45,082 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-27 23:24:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-27 23:24:45,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-27 23:24:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-27 23:24:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-27 23:24:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-27 23:24:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-27 23:24:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-27 23:24:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-27 23:24:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-27 23:24:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-27 23:24:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-27 23:24:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-27 23:24:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:24:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-27 23:24:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-27 23:24:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-27 23:24:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-27 23:24:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-27 23:24:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-27 23:24:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-27 23:24:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-27 23:24:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-27 23:24:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-27 23:24:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-27 23:24:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-27 23:24:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-27 23:24:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-27 23:24:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-27 23:24:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-27 23:24:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-27 23:24:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-27 23:24:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-27 23:24:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:24:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:24:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:24:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:24:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:24:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:24:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:24:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 23:24:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 23:24:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 23:24:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 23:24:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 23:24:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 23:24:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-27 23:24:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-27 23:24:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:24:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:24:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-27 23:24:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-27 23:24:45,349 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:24:45,351 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:24:47,083 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2024-11-27 23:24:47,083 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:24:47,115 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:24:47,115 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:24:47,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:47 BoogieIcfgContainer [2024-11-27 23:24:47,116 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:24:47,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:24:47,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:24:47,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:24:47,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:24:43" (1/3) ... [2024-11-27 23:24:47,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b5b076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:47, skipping insertion in model container [2024-11-27 23:24:47,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:44" (2/3) ... [2024-11-27 23:24:47,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b5b076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:47, skipping insertion in model container [2024-11-27 23:24:47,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:47" (3/3) ... [2024-11-27 23:24:47,133 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2024-11-27 23:24:47,152 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:24:47,157 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product31.cil.c that has 28 procedures, 602 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:24:47,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:47,280 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@69f435d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:47,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:24:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 468 states have (on average 1.6773504273504274) internal successors, (785), 489 states have internal predecessors, (785), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-27 23:24:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:24:47,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:47,334 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:47,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:47,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 353378051, now seen corresponding path program 1 times [2024-11-27 23:24:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:47,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488484715] [2024-11-27 23:24:47,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:24:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:48,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488484715] [2024-11-27 23:24:48,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488484715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:48,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046455416] [2024-11-27 23:24:48,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:48,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:48,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:48,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:24:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:48,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:24:48,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:24:49,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046455416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:49,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-27 23:24:49,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554947573] [2024-11-27 23:24:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:49,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:24:49,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:49,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:24:49,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:49,058 INFO L87 Difference]: Start difference. First operand has 602 states, 468 states have (on average 1.6773504273504274) internal successors, (785), 489 states have internal predecessors, (785), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-27 23:24:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:49,176 INFO L93 Difference]: Finished difference Result 623 states and 1025 transitions. [2024-11-27 23:24:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:24:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-11-27 23:24:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:49,220 INFO L225 Difference]: With dead ends: 623 [2024-11-27 23:24:49,220 INFO L226 Difference]: Without dead ends: 594 [2024-11-27 23:24:49,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:49,229 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:49,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-27 23:24:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-11-27 23:24:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 481 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 23:24:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 979 transitions. [2024-11-27 23:24:49,358 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 979 transitions. Word has length 127 [2024-11-27 23:24:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:49,359 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 979 transitions. [2024-11-27 23:24:49,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-27 23:24:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 979 transitions. [2024-11-27 23:24:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 23:24:49,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:49,370 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:49,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:24:49,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:24:49,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:49,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1063659180, now seen corresponding path program 1 times [2024-11-27 23:24:49,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:49,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12954989] [2024-11-27 23:24:49,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:49,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:24:49,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12954989] [2024-11-27 23:24:49,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12954989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853642935] [2024-11-27 23:24:49,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:49,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:49,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:49,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:24:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:50,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:50,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 23:24:50,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:50,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853642935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:50,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:50,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-27 23:24:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992023217] [2024-11-27 23:24:50,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:50,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:50,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:50,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:50,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:50,541 INFO L87 Difference]: Start difference. First operand 594 states and 979 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:50,745 INFO L93 Difference]: Finished difference Result 1607 states and 2668 transitions. [2024-11-27 23:24:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:50,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-27 23:24:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:50,764 INFO L225 Difference]: With dead ends: 1607 [2024-11-27 23:24:50,766 INFO L226 Difference]: Without dead ends: 1098 [2024-11-27 23:24:50,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:50,794 INFO L435 NwaCegarLoop]: 1674 mSDtfsCounter, 831 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:50,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2642 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2024-11-27 23:24:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1078. [2024-11-27 23:24:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 837 states have (on average 1.6750298685782556) internal successors, (1402), 869 states have internal predecessors, (1402), 193 states have call successors, (193), 47 states have call predecessors, (193), 47 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1789 transitions. [2024-11-27 23:24:50,901 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1789 transitions. Word has length 128 [2024-11-27 23:24:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:50,902 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1789 transitions. [2024-11-27 23:24:50,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1789 transitions. [2024-11-27 23:24:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 23:24:50,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:50,914 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:50,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:24:51,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:51,115 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:51,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1125698794, now seen corresponding path program 1 times [2024-11-27 23:24:51,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:51,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694779066] [2024-11-27 23:24:51,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:51,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:24:51,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694779066] [2024-11-27 23:24:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694779066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163158696] [2024-11-27 23:24:51,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:51,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:51,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:51,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:51,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:24:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:51,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:51,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:24:51,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:51,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163158696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:51,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:51,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61411575] [2024-11-27 23:24:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:51,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:51,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:51,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:51,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:51,972 INFO L87 Difference]: Start difference. First operand 1078 states and 1789 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:52,113 INFO L93 Difference]: Finished difference Result 2147 states and 3570 transitions. [2024-11-27 23:24:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-27 23:24:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:52,124 INFO L225 Difference]: With dead ends: 2147 [2024-11-27 23:24:52,124 INFO L226 Difference]: Without dead ends: 1078 [2024-11-27 23:24:52,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:52,134 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 5 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:52,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2895 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2024-11-27 23:24:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1078. [2024-11-27 23:24:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 837 states have (on average 1.6738351254480286) internal successors, (1401), 869 states have internal predecessors, (1401), 193 states have call successors, (193), 47 states have call predecessors, (193), 47 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1788 transitions. [2024-11-27 23:24:52,221 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1788 transitions. Word has length 128 [2024-11-27 23:24:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:52,222 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1788 transitions. [2024-11-27 23:24:52,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1788 transitions. [2024-11-27 23:24:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:24:52,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:52,230 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:52,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:52,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:52,431 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:52,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash -856842116, now seen corresponding path program 1 times [2024-11-27 23:24:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702913371] [2024-11-27 23:24:52,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:52,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:24:52,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702913371] [2024-11-27 23:24:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702913371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922799782] [2024-11-27 23:24:52,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:52,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:52,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:52,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:52,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:24:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:53,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:53,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:24:53,251 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922799782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:53,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:53,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:53,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009334194] [2024-11-27 23:24:53,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:53,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:53,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:53,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:53,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:53,253 INFO L87 Difference]: Start difference. First operand 1078 states and 1788 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:53,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:53,371 INFO L93 Difference]: Finished difference Result 2147 states and 3568 transitions. [2024-11-27 23:24:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:53,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2024-11-27 23:24:53,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:53,385 INFO L225 Difference]: With dead ends: 2147 [2024-11-27 23:24:53,385 INFO L226 Difference]: Without dead ends: 1078 [2024-11-27 23:24:53,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:53,393 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 4 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:53,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2895 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:53,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2024-11-27 23:24:53,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1078. [2024-11-27 23:24:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 837 states have (on average 1.6726403823178018) internal successors, (1400), 869 states have internal predecessors, (1400), 193 states have call successors, (193), 47 states have call predecessors, (193), 47 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1787 transitions. [2024-11-27 23:24:53,483 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1787 transitions. Word has length 130 [2024-11-27 23:24:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:53,484 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1787 transitions. [2024-11-27 23:24:53,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1787 transitions. [2024-11-27 23:24:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 23:24:53,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:53,489 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:53,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:53,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:53,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:53,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1127229142, now seen corresponding path program 1 times [2024-11-27 23:24:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273719206] [2024-11-27 23:24:53,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:24:53,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273719206] [2024-11-27 23:24:53,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273719206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161411294] [2024-11-27 23:24:53,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:53,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:53,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:53,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:53,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:24:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:54,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:54,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:24:54,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:54,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161411294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:54,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:54,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294205476] [2024-11-27 23:24:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:54,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:54,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:54,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:54,537 INFO L87 Difference]: Start difference. First operand 1078 states and 1787 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:54,670 INFO L93 Difference]: Finished difference Result 2154 states and 3575 transitions. [2024-11-27 23:24:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:54,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2024-11-27 23:24:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:54,680 INFO L225 Difference]: With dead ends: 2154 [2024-11-27 23:24:54,681 INFO L226 Difference]: Without dead ends: 1087 [2024-11-27 23:24:54,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:24:54,687 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 13 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:54,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2892 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-27 23:24:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1087. [2024-11-27 23:24:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 845 states have (on average 1.6710059171597633) internal successors, (1412), 877 states have internal predecessors, (1412), 193 states have call successors, (193), 48 states have call predecessors, (193), 48 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1799 transitions. [2024-11-27 23:24:54,751 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1799 transitions. Word has length 132 [2024-11-27 23:24:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:54,751 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1799 transitions. [2024-11-27 23:24:54,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1799 transitions. [2024-11-27 23:24:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 23:24:54,774 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:54,775 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:54,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:54,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:54,976 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:54,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1358913916, now seen corresponding path program 1 times [2024-11-27 23:24:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94589590] [2024-11-27 23:24:54,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:24:55,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:55,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94589590] [2024-11-27 23:24:55,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94589590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:55,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923189420] [2024-11-27 23:24:55,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:55,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:55,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:55,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:55,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:24:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:55,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:55,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:24:55,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:55,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923189420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:55,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:55,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371464864] [2024-11-27 23:24:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:55,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:55,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:55,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:55,660 INFO L87 Difference]: Start difference. First operand 1087 states and 1799 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:55,800 INFO L93 Difference]: Finished difference Result 2156 states and 3576 transitions. [2024-11-27 23:24:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:55,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2024-11-27 23:24:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:55,813 INFO L225 Difference]: With dead ends: 2156 [2024-11-27 23:24:55,813 INFO L226 Difference]: Without dead ends: 1087 [2024-11-27 23:24:55,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:24:55,821 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 11 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:55,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2892 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-27 23:24:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1087. [2024-11-27 23:24:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 845 states have (on average 1.6698224852071006) internal successors, (1411), 877 states have internal predecessors, (1411), 193 states have call successors, (193), 48 states have call predecessors, (193), 48 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1798 transitions. [2024-11-27 23:24:55,900 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1798 transitions. Word has length 133 [2024-11-27 23:24:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:55,900 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1798 transitions. [2024-11-27 23:24:55,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1798 transitions. [2024-11-27 23:24:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-27 23:24:55,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:55,905 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:55,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:24:56,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 23:24:56,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:56,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 658808550, now seen corresponding path program 1 times [2024-11-27 23:24:56,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:56,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068522012] [2024-11-27 23:24:56,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:24:56,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068522012] [2024-11-27 23:24:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068522012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956502909] [2024-11-27 23:24:56,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:56,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:56,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:56,288 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:56,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:24:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:56,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:56,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:24:56,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956502909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:56,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052315287] [2024-11-27 23:24:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:56,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:56,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:56,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:24:56,786 INFO L87 Difference]: Start difference. First operand 1087 states and 1798 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:56,926 INFO L93 Difference]: Finished difference Result 2156 states and 3575 transitions. [2024-11-27 23:24:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:56,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2024-11-27 23:24:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:56,937 INFO L225 Difference]: With dead ends: 2156 [2024-11-27 23:24:56,937 INFO L226 Difference]: Without dead ends: 1087 [2024-11-27 23:24:56,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:24:56,943 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 10 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:56,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2892 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:24:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-27 23:24:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1087. [2024-11-27 23:24:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 845 states have (on average 1.668639053254438) internal successors, (1410), 877 states have internal predecessors, (1410), 193 states have call successors, (193), 48 states have call predecessors, (193), 48 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:57,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1797 transitions. [2024-11-27 23:24:57,003 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1797 transitions. Word has length 134 [2024-11-27 23:24:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:57,004 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1797 transitions. [2024-11-27 23:24:57,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1797 transitions. [2024-11-27 23:24:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-27 23:24:57,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:57,009 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:57,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:57,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 23:24:57,214 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:57,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash -606288576, now seen corresponding path program 1 times [2024-11-27 23:24:57,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:57,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750136469] [2024-11-27 23:24:57,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:24:57,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:57,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750136469] [2024-11-27 23:24:57,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750136469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:57,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590484670] [2024-11-27 23:24:57,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:57,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:57,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:57,544 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:57,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:24:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:58,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:58,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:24:58,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:58,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590484670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:58,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:58,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 23:24:58,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073943470] [2024-11-27 23:24:58,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:58,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:58,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:58,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:58,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:24:58,103 INFO L87 Difference]: Start difference. First operand 1087 states and 1797 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:58,342 INFO L93 Difference]: Finished difference Result 2182 states and 3622 transitions. [2024-11-27 23:24:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2024-11-27 23:24:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:58,356 INFO L225 Difference]: With dead ends: 2182 [2024-11-27 23:24:58,356 INFO L226 Difference]: Without dead ends: 1102 [2024-11-27 23:24:58,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:24:58,363 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 76 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:58,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2783 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:24:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2024-11-27 23:24:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1087. [2024-11-27 23:24:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 845 states have (on average 1.6627218934911243) internal successors, (1405), 877 states have internal predecessors, (1405), 193 states have call successors, (193), 48 states have call predecessors, (193), 48 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1792 transitions. [2024-11-27 23:24:58,420 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1792 transitions. Word has length 135 [2024-11-27 23:24:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:58,420 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1792 transitions. [2024-11-27 23:24:58,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1792 transitions. [2024-11-27 23:24:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-27 23:24:58,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:58,425 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:58,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:24:58,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 23:24:58,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:58,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1857809642, now seen corresponding path program 1 times [2024-11-27 23:24:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066345056] [2024-11-27 23:24:58,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:24:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066345056] [2024-11-27 23:24:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066345056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5149180] [2024-11-27 23:24:58,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:58,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:58,951 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:58,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:24:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:59,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:24:59,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:24:59,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5149180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:59,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:59,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 23:24:59,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026466102] [2024-11-27 23:24:59,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:59,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:59,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:59,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:59,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:24:59,446 INFO L87 Difference]: Start difference. First operand 1087 states and 1792 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:59,652 INFO L93 Difference]: Finished difference Result 2182 states and 3612 transitions. [2024-11-27 23:24:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2024-11-27 23:24:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:59,662 INFO L225 Difference]: With dead ends: 2182 [2024-11-27 23:24:59,662 INFO L226 Difference]: Without dead ends: 1102 [2024-11-27 23:24:59,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:24:59,669 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 75 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:59,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2783 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:24:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2024-11-27 23:24:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1087. [2024-11-27 23:24:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 845 states have (on average 1.6568047337278107) internal successors, (1400), 877 states have internal predecessors, (1400), 193 states have call successors, (193), 48 states have call predecessors, (193), 48 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:24:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1787 transitions. [2024-11-27 23:24:59,726 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1787 transitions. Word has length 137 [2024-11-27 23:24:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:59,727 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1787 transitions. [2024-11-27 23:24:59,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:24:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1787 transitions. [2024-11-27 23:24:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-27 23:24:59,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:59,732 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:59,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:59,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 23:24:59,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:59,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1986732064, now seen corresponding path program 1 times [2024-11-27 23:24:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:59,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052017738] [2024-11-27 23:24:59,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:25:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052017738] [2024-11-27 23:25:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052017738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255480365] [2024-11-27 23:25:00,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:00,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:00,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:00,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:25:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:00,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:25:00,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:25:00,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:00,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255480365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:00,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:00,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 23:25:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672030525] [2024-11-27 23:25:00,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:00,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:00,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:00,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:00,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:25:00,759 INFO L87 Difference]: Start difference. First operand 1087 states and 1787 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:25:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:01,037 INFO L93 Difference]: Finished difference Result 2233 states and 3685 transitions. [2024-11-27 23:25:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:01,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-27 23:25:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:01,048 INFO L225 Difference]: With dead ends: 2233 [2024-11-27 23:25:01,049 INFO L226 Difference]: Without dead ends: 1168 [2024-11-27 23:25:01,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:25:01,055 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 130 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:01,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2787 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:25:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-27 23:25:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1138. [2024-11-27 23:25:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 895 states have (on average 1.6592178770949721) internal successors, (1485), 927 states have internal predecessors, (1485), 193 states have call successors, (193), 49 states have call predecessors, (193), 49 states have return successors, (194), 187 states have call predecessors, (194), 188 states have call successors, (194) [2024-11-27 23:25:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1872 transitions. [2024-11-27 23:25:01,128 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1872 transitions. Word has length 139 [2024-11-27 23:25:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:01,128 INFO L471 AbstractCegarLoop]: Abstraction has 1138 states and 1872 transitions. [2024-11-27 23:25:01,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:25:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1872 transitions. [2024-11-27 23:25:01,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 23:25:01,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:01,134 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:01,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:25:01,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:01,335 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:01,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1170902134, now seen corresponding path program 1 times [2024-11-27 23:25:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:01,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277366347] [2024-11-27 23:25:01,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:01,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:25:01,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277366347] [2024-11-27 23:25:01,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277366347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966267114] [2024-11-27 23:25:01,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:01,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:01,553 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:01,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:25:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:01,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:25:01,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:25:02,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:02,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966267114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:02,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:02,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 23:25:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138001912] [2024-11-27 23:25:02,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:02,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:25:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:02,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:25:02,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:25:02,095 INFO L87 Difference]: Start difference. First operand 1138 states and 1872 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:02,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:02,345 INFO L93 Difference]: Finished difference Result 2241 states and 3694 transitions. [2024-11-27 23:25:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:25:02,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2024-11-27 23:25:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:02,357 INFO L225 Difference]: With dead ends: 2241 [2024-11-27 23:25:02,357 INFO L226 Difference]: Without dead ends: 1176 [2024-11-27 23:25:02,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:25:02,365 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 113 mSDsluCounter, 5593 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6540 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:02,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6540 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-27 23:25:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1157. [2024-11-27 23:25:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 911 states have (on average 1.6586169045005488) internal successors, (1511), 945 states have internal predecessors, (1511), 194 states have call successors, (194), 49 states have call predecessors, (194), 51 states have return successors, (197), 188 states have call predecessors, (197), 189 states have call successors, (197) [2024-11-27 23:25:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1902 transitions. [2024-11-27 23:25:02,427 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1902 transitions. Word has length 140 [2024-11-27 23:25:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:02,428 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1902 transitions. [2024-11-27 23:25:02,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1902 transitions. [2024-11-27 23:25:02,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 23:25:02,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:02,432 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:02,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:02,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:02,636 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:02,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1601818935, now seen corresponding path program 1 times [2024-11-27 23:25:02,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:02,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889765660] [2024-11-27 23:25:02,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:25:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889765660] [2024-11-27 23:25:02,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889765660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:02,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335711052] [2024-11-27 23:25:02,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:02,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:02,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:02,764 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:02,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:25:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:03,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:25:03,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:25:03,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:03,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335711052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:03,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-27 23:25:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211548202] [2024-11-27 23:25:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:03,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:25:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:03,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:25:03,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:03,289 INFO L87 Difference]: Start difference. First operand 1157 states and 1902 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:03,448 INFO L93 Difference]: Finished difference Result 2179 states and 3594 transitions. [2024-11-27 23:25:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:25:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2024-11-27 23:25:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:03,459 INFO L225 Difference]: With dead ends: 2179 [2024-11-27 23:25:03,459 INFO L226 Difference]: Without dead ends: 1181 [2024-11-27 23:25:03,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:03,464 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 86 mSDsluCounter, 4721 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:03,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5681 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2024-11-27 23:25:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1176. [2024-11-27 23:25:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 927 states have (on average 1.6580366774541533) internal successors, (1537), 963 states have internal predecessors, (1537), 195 states have call successors, (195), 49 states have call predecessors, (195), 53 states have return successors, (200), 189 states have call predecessors, (200), 190 states have call successors, (200) [2024-11-27 23:25:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1932 transitions. [2024-11-27 23:25:03,555 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1932 transitions. Word has length 140 [2024-11-27 23:25:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:03,557 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1932 transitions. [2024-11-27 23:25:03,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1932 transitions. [2024-11-27 23:25:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 23:25:03,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:03,562 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:03,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:25:03,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:03,763 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:03,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1630732935, now seen corresponding path program 1 times [2024-11-27 23:25:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791380571] [2024-11-27 23:25:03,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:03,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:25:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791380571] [2024-11-27 23:25:03,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791380571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:03,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135805296] [2024-11-27 23:25:03,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:03,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:03,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:03,882 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:03,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:25:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:04,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:25:04,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:25:04,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135805296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:04,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:25:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125820967] [2024-11-27 23:25:04,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:04,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:04,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:04,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:25:04,363 INFO L87 Difference]: Start difference. First operand 1176 states and 1932 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:25:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:04,448 INFO L93 Difference]: Finished difference Result 2246 states and 3704 transitions. [2024-11-27 23:25:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:04,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-11-27 23:25:04,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:04,459 INFO L225 Difference]: With dead ends: 2246 [2024-11-27 23:25:04,459 INFO L226 Difference]: Without dead ends: 1176 [2024-11-27 23:25:04,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:04,465 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 13 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:04,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2861 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-27 23:25:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1176. [2024-11-27 23:25:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 927 states have (on average 1.6537216828478964) internal successors, (1533), 963 states have internal predecessors, (1533), 195 states have call successors, (195), 49 states have call predecessors, (195), 53 states have return successors, (200), 189 states have call predecessors, (200), 190 states have call successors, (200) [2024-11-27 23:25:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1928 transitions. [2024-11-27 23:25:04,517 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1928 transitions. Word has length 141 [2024-11-27 23:25:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:04,517 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1928 transitions. [2024-11-27 23:25:04,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:25:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1928 transitions. [2024-11-27 23:25:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 23:25:04,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:04,537 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:04,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:04,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:04,738 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:04,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash -987339331, now seen corresponding path program 1 times [2024-11-27 23:25:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975102329] [2024-11-27 23:25:04,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:25:04,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:04,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975102329] [2024-11-27 23:25:04,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975102329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:04,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960804983] [2024-11-27 23:25:04,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:04,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:04,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:04,872 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:04,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:25:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:05,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:25:05,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:25:05,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960804983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-27 23:25:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786673249] [2024-11-27 23:25:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:05,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:25:05,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:05,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:25:05,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:05,442 INFO L87 Difference]: Start difference. First operand 1176 states and 1928 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:05,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:05,572 INFO L93 Difference]: Finished difference Result 2209 states and 3641 transitions. [2024-11-27 23:25:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:25:05,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-27 23:25:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:05,589 INFO L225 Difference]: With dead ends: 2209 [2024-11-27 23:25:05,589 INFO L226 Difference]: Without dead ends: 1211 [2024-11-27 23:25:05,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:05,596 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 95 mSDsluCounter, 4688 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:05,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5642 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:05,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-27 23:25:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1176. [2024-11-27 23:25:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 927 states have (on average 1.6537216828478964) internal successors, (1533), 963 states have internal predecessors, (1533), 195 states have call successors, (195), 49 states have call predecessors, (195), 53 states have return successors, (200), 189 states have call predecessors, (200), 190 states have call successors, (200) [2024-11-27 23:25:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1928 transitions. [2024-11-27 23:25:05,660 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1928 transitions. Word has length 141 [2024-11-27 23:25:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:05,661 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1928 transitions. [2024-11-27 23:25:05,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1928 transitions. [2024-11-27 23:25:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 23:25:05,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:05,665 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:05,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:25:05,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:05,866 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:05,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash -196716227, now seen corresponding path program 1 times [2024-11-27 23:25:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:05,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929616824] [2024-11-27 23:25:05,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:05,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:05,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929616824] [2024-11-27 23:25:05,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929616824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:05,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419412303] [2024-11-27 23:25:05,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:05,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:05,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:05,985 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:05,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:25:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:06,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:25:06,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:25:06,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:06,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419412303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:06,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:06,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-27 23:25:06,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071833541] [2024-11-27 23:25:06,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:06,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:25:06,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:06,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:25:06,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:06,494 INFO L87 Difference]: Start difference. First operand 1176 states and 1928 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:06,757 INFO L93 Difference]: Finished difference Result 2194 states and 3615 transitions. [2024-11-27 23:25:06,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:25:06,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-27 23:25:06,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:06,767 INFO L225 Difference]: With dead ends: 2194 [2024-11-27 23:25:06,767 INFO L226 Difference]: Without dead ends: 1196 [2024-11-27 23:25:06,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:25:06,773 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 113 mSDsluCounter, 5571 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6514 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:06,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6514 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:25:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2024-11-27 23:25:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1176. [2024-11-27 23:25:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 927 states have (on average 1.6537216828478964) internal successors, (1533), 963 states have internal predecessors, (1533), 195 states have call successors, (195), 49 states have call predecessors, (195), 53 states have return successors, (200), 189 states have call predecessors, (200), 190 states have call successors, (200) [2024-11-27 23:25:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1928 transitions. [2024-11-27 23:25:06,829 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1928 transitions. Word has length 141 [2024-11-27 23:25:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:06,830 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1928 transitions. [2024-11-27 23:25:06,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1928 transitions. [2024-11-27 23:25:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-27 23:25:06,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:06,836 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:06,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:25:07,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:07,037 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:07,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash 550646751, now seen corresponding path program 1 times [2024-11-27 23:25:07,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318106275] [2024-11-27 23:25:07,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:07,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:07,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318106275] [2024-11-27 23:25:07,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318106275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452352477] [2024-11-27 23:25:07,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:07,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:07,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:07,155 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:07,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:25:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:07,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:25:07,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:25:07,663 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452352477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:07,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:07,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-27 23:25:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397644161] [2024-11-27 23:25:07,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:07,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:25:07,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:07,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:25:07,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:07,665 INFO L87 Difference]: Start difference. First operand 1176 states and 1928 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:07,867 INFO L93 Difference]: Finished difference Result 2194 states and 3616 transitions. [2024-11-27 23:25:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:25:07,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2024-11-27 23:25:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:07,877 INFO L225 Difference]: With dead ends: 2194 [2024-11-27 23:25:07,877 INFO L226 Difference]: Without dead ends: 1196 [2024-11-27 23:25:07,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:25:07,883 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 121 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6504 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:07,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6504 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2024-11-27 23:25:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1176. [2024-11-27 23:25:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 927 states have (on average 1.6537216828478964) internal successors, (1533), 963 states have internal predecessors, (1533), 195 states have call successors, (195), 49 states have call predecessors, (195), 53 states have return successors, (200), 189 states have call predecessors, (200), 190 states have call successors, (200) [2024-11-27 23:25:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1928 transitions. [2024-11-27 23:25:07,943 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1928 transitions. Word has length 142 [2024-11-27 23:25:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:07,943 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1928 transitions. [2024-11-27 23:25:07,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 23:25:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1928 transitions. [2024-11-27 23:25:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-27 23:25:07,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:07,949 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:07,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:08,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:25:08,150 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:08,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -654303988, now seen corresponding path program 1 times [2024-11-27 23:25:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280858269] [2024-11-27 23:25:08,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:25:08,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280858269] [2024-11-27 23:25:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280858269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573105227] [2024-11-27 23:25:08,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:08,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:08,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:08,261 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:08,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:25:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:08,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:25:08,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:08,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573105227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 23:25:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453958732] [2024-11-27 23:25:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:08,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:08,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:08,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:08,831 INFO L87 Difference]: Start difference. First operand 1176 states and 1928 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:09,566 INFO L93 Difference]: Finished difference Result 2185 states and 3649 transitions. [2024-11-27 23:25:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:25:09,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2024-11-27 23:25:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:09,576 INFO L225 Difference]: With dead ends: 2185 [2024-11-27 23:25:09,576 INFO L226 Difference]: Without dead ends: 1192 [2024-11-27 23:25:09,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:09,581 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 917 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:09,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 2437 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:25:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2024-11-27 23:25:09,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2024-11-27 23:25:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 941 states have (on average 1.6546227417640809) internal successors, (1557), 977 states have internal predecessors, (1557), 195 states have call successors, (195), 51 states have call predecessors, (195), 55 states have return successors, (202), 189 states have call predecessors, (202), 190 states have call successors, (202) [2024-11-27 23:25:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1954 transitions. [2024-11-27 23:25:09,639 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1954 transitions. Word has length 143 [2024-11-27 23:25:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:09,640 INFO L471 AbstractCegarLoop]: Abstraction has 1192 states and 1954 transitions. [2024-11-27 23:25:09,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1954 transitions. [2024-11-27 23:25:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 23:25:09,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:09,645 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:09,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:25:09,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:09,846 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:09,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1638262836, now seen corresponding path program 1 times [2024-11-27 23:25:09,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:09,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261696650] [2024-11-27 23:25:09,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:09,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:25:09,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261696650] [2024-11-27 23:25:09,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261696650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637722524] [2024-11-27 23:25:09,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:09,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:09,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:09,964 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:09,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:25:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:10,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:25:10,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:10,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:10,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637722524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:10,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 23:25:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950868044] [2024-11-27 23:25:10,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:10,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:10,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:10,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:10,525 INFO L87 Difference]: Start difference. First operand 1192 states and 1954 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:11,211 INFO L93 Difference]: Finished difference Result 2217 states and 3695 transitions. [2024-11-27 23:25:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:25:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2024-11-27 23:25:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:11,263 INFO L225 Difference]: With dead ends: 2217 [2024-11-27 23:25:11,264 INFO L226 Difference]: Without dead ends: 1208 [2024-11-27 23:25:11,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:11,271 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 908 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:11,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2434 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:25:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2024-11-27 23:25:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2024-11-27 23:25:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 955 states have (on average 1.655497382198953) internal successors, (1581), 991 states have internal predecessors, (1581), 195 states have call successors, (195), 53 states have call predecessors, (195), 57 states have return successors, (204), 189 states have call predecessors, (204), 190 states have call successors, (204) [2024-11-27 23:25:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1980 transitions. [2024-11-27 23:25:11,320 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1980 transitions. Word has length 145 [2024-11-27 23:25:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:11,320 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1980 transitions. [2024-11-27 23:25:11,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1980 transitions. [2024-11-27 23:25:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 23:25:11,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:11,327 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:11,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:25:11,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:25:11,528 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:11,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash -351286644, now seen corresponding path program 1 times [2024-11-27 23:25:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133091604] [2024-11-27 23:25:11,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:11,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:11,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133091604] [2024-11-27 23:25:11,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133091604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:11,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797254993] [2024-11-27 23:25:11,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:11,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:11,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:11,635 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:11,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:25:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:12,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:25:12,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:12,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797254993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:12,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:12,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 23:25:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160197561] [2024-11-27 23:25:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:12,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:12,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:12,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:12,216 INFO L87 Difference]: Start difference. First operand 1208 states and 1980 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:12,863 INFO L93 Difference]: Finished difference Result 2249 states and 3741 transitions. [2024-11-27 23:25:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:25:12,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-27 23:25:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:12,872 INFO L225 Difference]: With dead ends: 2249 [2024-11-27 23:25:12,873 INFO L226 Difference]: Without dead ends: 1224 [2024-11-27 23:25:12,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:12,877 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 892 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:12,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2431 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:25:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-11-27 23:25:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2024-11-27 23:25:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 969 states have (on average 1.6563467492260062) internal successors, (1605), 1005 states have internal predecessors, (1605), 195 states have call successors, (195), 55 states have call predecessors, (195), 59 states have return successors, (206), 189 states have call predecessors, (206), 190 states have call successors, (206) [2024-11-27 23:25:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2006 transitions. [2024-11-27 23:25:12,957 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2006 transitions. Word has length 147 [2024-11-27 23:25:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:12,958 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 2006 transitions. [2024-11-27 23:25:12,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2006 transitions. [2024-11-27 23:25:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 23:25:12,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:12,963 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:12,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:25:13,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:13,164 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:13,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2056213820, now seen corresponding path program 1 times [2024-11-27 23:25:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113662762] [2024-11-27 23:25:13,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 23:25:13,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:13,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113662762] [2024-11-27 23:25:13,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113662762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:13,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099714481] [2024-11-27 23:25:13,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:13,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:13,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:13,272 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:13,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:25:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:13,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:25:13,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:13,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:13,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099714481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:13,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:13,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 23:25:13,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291131798] [2024-11-27 23:25:13,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:13,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:13,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:13,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:13,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:13,882 INFO L87 Difference]: Start difference. First operand 1224 states and 2006 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:14,497 INFO L93 Difference]: Finished difference Result 2281 states and 3787 transitions. [2024-11-27 23:25:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:25:14,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2024-11-27 23:25:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:14,508 INFO L225 Difference]: With dead ends: 2281 [2024-11-27 23:25:14,508 INFO L226 Difference]: Without dead ends: 1240 [2024-11-27 23:25:14,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:14,514 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 898 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:14,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2428 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:25:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-27 23:25:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2024-11-27 23:25:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 983 states have (on average 1.657171922685656) internal successors, (1629), 1019 states have internal predecessors, (1629), 195 states have call successors, (195), 57 states have call predecessors, (195), 61 states have return successors, (208), 189 states have call predecessors, (208), 190 states have call successors, (208) [2024-11-27 23:25:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 2032 transitions. [2024-11-27 23:25:14,606 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 2032 transitions. Word has length 149 [2024-11-27 23:25:14,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:14,607 INFO L471 AbstractCegarLoop]: Abstraction has 1240 states and 2032 transitions. [2024-11-27 23:25:14,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:25:14,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 2032 transitions. [2024-11-27 23:25:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-27 23:25:14,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:14,611 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:14,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:14,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:14,812 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:14,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1160739180, now seen corresponding path program 1 times [2024-11-27 23:25:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:14,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625194333] [2024-11-27 23:25:14,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:14,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625194333] [2024-11-27 23:25:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625194333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:14,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867166636] [2024-11-27 23:25:14,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:14,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:14,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:14,948 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:14,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:25:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:15,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:25:15,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:25:15,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:15,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867166636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:15,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-27 23:25:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491676786] [2024-11-27 23:25:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:15,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:15,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:15,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:15,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:15,697 INFO L87 Difference]: Start difference. First operand 1240 states and 2032 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-27 23:25:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:16,280 INFO L93 Difference]: Finished difference Result 1319 states and 2156 transitions. [2024-11-27 23:25:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 151 [2024-11-27 23:25:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:16,292 INFO L225 Difference]: With dead ends: 1319 [2024-11-27 23:25:16,292 INFO L226 Difference]: Without dead ends: 1304 [2024-11-27 23:25:16,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:16,294 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 931 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:16,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2461 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:25:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2024-11-27 23:25:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2024-11-27 23:25:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 987 states have (on average 1.6545086119554204) internal successors, (1633), 1023 states have internal predecessors, (1633), 195 states have call successors, (195), 57 states have call predecessors, (195), 61 states have return successors, (208), 189 states have call predecessors, (208), 190 states have call successors, (208) [2024-11-27 23:25:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 2036 transitions. [2024-11-27 23:25:16,345 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 2036 transitions. Word has length 151 [2024-11-27 23:25:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:16,346 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 2036 transitions. [2024-11-27 23:25:16,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-27 23:25:16,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 2036 transitions. [2024-11-27 23:25:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 23:25:16,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:16,350 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:16,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:16,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 23:25:16,551 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:16,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1183307065, now seen corresponding path program 1 times [2024-11-27 23:25:16,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:16,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051113212] [2024-11-27 23:25:16,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:16,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:16,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051113212] [2024-11-27 23:25:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051113212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318245300] [2024-11-27 23:25:16,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:16,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:16,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:16,683 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:16,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:25:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:17,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:25:17,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:25:17,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:17,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318245300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:17,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:17,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-27 23:25:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138890498] [2024-11-27 23:25:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:17,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:17,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:17,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:17,169 INFO L87 Difference]: Start difference. First operand 1244 states and 2036 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-27 23:25:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:17,210 INFO L93 Difference]: Finished difference Result 1259 states and 2054 transitions. [2024-11-27 23:25:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:17,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2024-11-27 23:25:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:17,221 INFO L225 Difference]: With dead ends: 1259 [2024-11-27 23:25:17,224 INFO L226 Difference]: Without dead ends: 1244 [2024-11-27 23:25:17,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:17,229 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 0 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:17,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3844 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:17,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2024-11-27 23:25:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1244. [2024-11-27 23:25:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 987 states have (on average 1.6524822695035462) internal successors, (1631), 1023 states have internal predecessors, (1631), 195 states have call successors, (195), 57 states have call predecessors, (195), 61 states have return successors, (208), 189 states have call predecessors, (208), 190 states have call successors, (208) [2024-11-27 23:25:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 2034 transitions. [2024-11-27 23:25:17,278 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 2034 transitions. Word has length 157 [2024-11-27 23:25:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:17,280 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 2034 transitions. [2024-11-27 23:25:17,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-27 23:25:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 2034 transitions. [2024-11-27 23:25:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-27 23:25:17,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:17,284 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:17,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:25:17,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 23:25:17,485 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:17,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -154287204, now seen corresponding path program 1 times [2024-11-27 23:25:17,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:17,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616977019] [2024-11-27 23:25:17,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:17,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:25:17,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:17,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616977019] [2024-11-27 23:25:17,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616977019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:17,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92896269] [2024-11-27 23:25:17,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:17,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:17,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:17,599 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:17,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:25:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:18,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:25:18,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 23:25:18,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:18,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92896269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:18,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:18,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-27 23:25:18,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462259305] [2024-11-27 23:25:18,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:18,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:18,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:18,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:18,049 INFO L87 Difference]: Start difference. First operand 1244 states and 2034 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:18,142 INFO L93 Difference]: Finished difference Result 2462 states and 4038 transitions. [2024-11-27 23:25:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:18,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2024-11-27 23:25:18,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:18,152 INFO L225 Difference]: With dead ends: 2462 [2024-11-27 23:25:18,152 INFO L226 Difference]: Without dead ends: 1219 [2024-11-27 23:25:18,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:18,156 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 7 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:18,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2861 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-11-27 23:25:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2024-11-27 23:25:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 965 states have (on average 1.649740932642487) internal successors, (1592), 999 states have internal predecessors, (1592), 194 states have call successors, (194), 57 states have call predecessors, (194), 59 states have return successors, (205), 188 states have call predecessors, (205), 189 states have call successors, (205) [2024-11-27 23:25:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1991 transitions. [2024-11-27 23:25:18,199 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1991 transitions. Word has length 168 [2024-11-27 23:25:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:18,200 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1991 transitions. [2024-11-27 23:25:18,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1991 transitions. [2024-11-27 23:25:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-27 23:25:18,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:18,204 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:18,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 23:25:18,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 23:25:18,405 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:18,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash -644287267, now seen corresponding path program 1 times [2024-11-27 23:25:18,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:18,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950508345] [2024-11-27 23:25:18,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:18,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 23:25:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950508345] [2024-11-27 23:25:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950508345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462062318] [2024-11-27 23:25:18,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:18,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:18,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:18,601 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:18,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:25:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:19,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:25:19,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 23:25:19,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462062318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:19,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:19,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-27 23:25:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447921366] [2024-11-27 23:25:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:19,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:19,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:19,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:19,088 INFO L87 Difference]: Start difference. First operand 1219 states and 1991 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:19,154 INFO L93 Difference]: Finished difference Result 2392 states and 3925 transitions. [2024-11-27 23:25:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:19,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2024-11-27 23:25:19,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:19,164 INFO L225 Difference]: With dead ends: 2392 [2024-11-27 23:25:19,164 INFO L226 Difference]: Without dead ends: 1237 [2024-11-27 23:25:19,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:19,168 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 7 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:19,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2831 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-27 23:25:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1237. [2024-11-27 23:25:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 983 states have (on average 1.6398779247202442) internal successors, (1612), 1017 states have internal predecessors, (1612), 194 states have call successors, (194), 57 states have call predecessors, (194), 59 states have return successors, (205), 188 states have call predecessors, (205), 189 states have call successors, (205) [2024-11-27 23:25:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2011 transitions. [2024-11-27 23:25:19,211 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2011 transitions. Word has length 169 [2024-11-27 23:25:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:19,212 INFO L471 AbstractCegarLoop]: Abstraction has 1237 states and 2011 transitions. [2024-11-27 23:25:19,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2011 transitions. [2024-11-27 23:25:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-27 23:25:19,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:19,234 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:19,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:19,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 23:25:19,435 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:19,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1397594321, now seen corresponding path program 1 times [2024-11-27 23:25:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330966202] [2024-11-27 23:25:19,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:19,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 23:25:19,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:19,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330966202] [2024-11-27 23:25:19,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330966202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:19,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153242383] [2024-11-27 23:25:19,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:19,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:19,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:19,635 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:19,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:25:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:20,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 23:25:20,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:20,106 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153242383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-27 23:25:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553634133] [2024-11-27 23:25:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:20,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:25:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:20,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:25:20,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:20,108 INFO L87 Difference]: Start difference. First operand 1237 states and 2011 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:20,218 INFO L93 Difference]: Finished difference Result 2443 states and 3982 transitions. [2024-11-27 23:25:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:25:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2024-11-27 23:25:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:20,236 INFO L225 Difference]: With dead ends: 2443 [2024-11-27 23:25:20,236 INFO L226 Difference]: Without dead ends: 1237 [2024-11-27 23:25:20,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:20,241 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 119 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5718 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:20,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5718 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-27 23:25:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1216. [2024-11-27 23:25:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 962 states have (on average 1.637214137214137) internal successors, (1575), 996 states have internal predecessors, (1575), 194 states have call successors, (194), 57 states have call predecessors, (194), 59 states have return successors, (205), 188 states have call predecessors, (205), 189 states have call successors, (205) [2024-11-27 23:25:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1974 transitions. [2024-11-27 23:25:20,299 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1974 transitions. Word has length 170 [2024-11-27 23:25:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:20,300 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1974 transitions. [2024-11-27 23:25:20,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1974 transitions. [2024-11-27 23:25:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-27 23:25:20,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:20,303 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:20,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:20,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 23:25:20,504 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:20,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1033651906, now seen corresponding path program 1 times [2024-11-27 23:25:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194147692] [2024-11-27 23:25:20,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:20,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:20,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194147692] [2024-11-27 23:25:20,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194147692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:20,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279785158] [2024-11-27 23:25:20,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:20,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:20,719 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:20,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:25:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:21,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:25:21,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:21,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279785158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:21,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:21,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-27 23:25:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935251279] [2024-11-27 23:25:21,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:21,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:21,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:21,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:21,194 INFO L87 Difference]: Start difference. First operand 1216 states and 1974 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:21,340 INFO L93 Difference]: Finished difference Result 2425 states and 3949 transitions. [2024-11-27 23:25:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2024-11-27 23:25:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:21,348 INFO L225 Difference]: With dead ends: 2425 [2024-11-27 23:25:21,348 INFO L226 Difference]: Without dead ends: 1240 [2024-11-27 23:25:21,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:21,352 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 129 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:21,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2740 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-27 23:25:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1216. [2024-11-27 23:25:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 962 states have (on average 1.636174636174636) internal successors, (1574), 996 states have internal predecessors, (1574), 194 states have call successors, (194), 57 states have call predecessors, (194), 59 states have return successors, (205), 188 states have call predecessors, (205), 189 states have call successors, (205) [2024-11-27 23:25:21,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1973 transitions. [2024-11-27 23:25:21,398 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1973 transitions. Word has length 171 [2024-11-27 23:25:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:21,398 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1973 transitions. [2024-11-27 23:25:21,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1973 transitions. [2024-11-27 23:25:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-27 23:25:21,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:21,402 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:21,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:21,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 23:25:21,602 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:21,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1974411978, now seen corresponding path program 1 times [2024-11-27 23:25:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:21,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663753174] [2024-11-27 23:25:21,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:21,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663753174] [2024-11-27 23:25:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663753174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120748395] [2024-11-27 23:25:21,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:21,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:21,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:21,804 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:21,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:25:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:22,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:25:22,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:22,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:22,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120748395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:22,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:22,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-27 23:25:22,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492361683] [2024-11-27 23:25:22,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:22,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:22,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:22,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:22,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:22,376 INFO L87 Difference]: Start difference. First operand 1216 states and 1973 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:22,525 INFO L93 Difference]: Finished difference Result 2425 states and 3948 transitions. [2024-11-27 23:25:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 172 [2024-11-27 23:25:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:22,536 INFO L225 Difference]: With dead ends: 2425 [2024-11-27 23:25:22,536 INFO L226 Difference]: Without dead ends: 1240 [2024-11-27 23:25:22,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:22,542 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 128 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:22,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2740 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-27 23:25:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1216. [2024-11-27 23:25:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 962 states have (on average 1.635135135135135) internal successors, (1573), 996 states have internal predecessors, (1573), 194 states have call successors, (194), 57 states have call predecessors, (194), 59 states have return successors, (205), 188 states have call predecessors, (205), 189 states have call successors, (205) [2024-11-27 23:25:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1972 transitions. [2024-11-27 23:25:22,605 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1972 transitions. Word has length 172 [2024-11-27 23:25:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:22,605 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1972 transitions. [2024-11-27 23:25:22,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:22,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1972 transitions. [2024-11-27 23:25:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-27 23:25:22,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:22,609 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:22,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:22,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 23:25:22,810 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:22,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:22,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1727746043, now seen corresponding path program 1 times [2024-11-27 23:25:22,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602455717] [2024-11-27 23:25:22,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:25:22,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602455717] [2024-11-27 23:25:22,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602455717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343720355] [2024-11-27 23:25:22,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:22,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:22,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:22,912 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:22,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 23:25:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:23,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:25:23,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:25:23,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:23,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343720355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:23,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:23,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-27 23:25:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641288510] [2024-11-27 23:25:23,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:23,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:23,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:23,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:23,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:23,393 INFO L87 Difference]: Start difference. First operand 1216 states and 1972 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:23,530 INFO L93 Difference]: Finished difference Result 2425 states and 3951 transitions. [2024-11-27 23:25:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:23,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2024-11-27 23:25:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:23,541 INFO L225 Difference]: With dead ends: 2425 [2024-11-27 23:25:23,541 INFO L226 Difference]: Without dead ends: 1240 [2024-11-27 23:25:23,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:23,546 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 122 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:23,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2740 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-27 23:25:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1216. [2024-11-27 23:25:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 962 states have (on average 1.6288981288981288) internal successors, (1567), 996 states have internal predecessors, (1567), 194 states have call successors, (194), 57 states have call predecessors, (194), 59 states have return successors, (205), 188 states have call predecessors, (205), 189 states have call successors, (205) [2024-11-27 23:25:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1966 transitions. [2024-11-27 23:25:23,593 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1966 transitions. Word has length 173 [2024-11-27 23:25:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:23,593 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1966 transitions. [2024-11-27 23:25:23,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1966 transitions. [2024-11-27 23:25:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-27 23:25:23,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:23,640 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:23,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 23:25:23,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 23:25:23,841 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:23,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:23,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2140666755, now seen corresponding path program 1 times [2024-11-27 23:25:23,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:23,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121847166] [2024-11-27 23:25:23,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:25:23,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:23,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121847166] [2024-11-27 23:25:23,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121847166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:23,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:23,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:25:23,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587593859] [2024-11-27 23:25:23,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:23,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:23,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:23,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:23,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:25:23,952 INFO L87 Difference]: Start difference. First operand 1216 states and 1966 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:24,018 INFO L93 Difference]: Finished difference Result 2360 states and 3846 transitions. [2024-11-27 23:25:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:24,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2024-11-27 23:25:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:24,029 INFO L225 Difference]: With dead ends: 2360 [2024-11-27 23:25:24,030 INFO L226 Difference]: Without dead ends: 1176 [2024-11-27 23:25:24,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:24,036 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 8 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:24,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2846 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-27 23:25:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1176. [2024-11-27 23:25:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 925 states have (on average 1.6281081081081081) internal successors, (1506), 957 states have internal predecessors, (1506), 193 states have call successors, (193), 57 states have call predecessors, (193), 57 states have return successors, (202), 187 states have call predecessors, (202), 188 states have call successors, (202) [2024-11-27 23:25:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1901 transitions. [2024-11-27 23:25:24,089 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1901 transitions. Word has length 173 [2024-11-27 23:25:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:24,090 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1901 transitions. [2024-11-27 23:25:24,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 23:25:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1901 transitions. [2024-11-27 23:25:24,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-27 23:25:24,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:24,093 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:24,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 23:25:24,094 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:24,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1423075697, now seen corresponding path program 1 times [2024-11-27 23:25:24,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:24,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226848242] [2024-11-27 23:25:24,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:24,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 23:25:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226848242] [2024-11-27 23:25:24,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226848242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:24,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:24,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:25:24,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679833187] [2024-11-27 23:25:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:24,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:25:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:24,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:25:24,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:24,294 INFO L87 Difference]: Start difference. First operand 1176 states and 1901 transitions. Second operand has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:24,393 INFO L93 Difference]: Finished difference Result 2263 states and 3692 transitions. [2024-11-27 23:25:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:25:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2024-11-27 23:25:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:24,402 INFO L225 Difference]: With dead ends: 2263 [2024-11-27 23:25:24,402 INFO L226 Difference]: Without dead ends: 1162 [2024-11-27 23:25:24,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:24,407 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 81 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 5527 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:24,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 5527 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2024-11-27 23:25:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2024-11-27 23:25:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 911 states have (on average 1.62788144895719) internal successors, (1483), 943 states have internal predecessors, (1483), 193 states have call successors, (193), 57 states have call predecessors, (193), 57 states have return successors, (202), 187 states have call predecessors, (202), 188 states have call successors, (202) [2024-11-27 23:25:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1878 transitions. [2024-11-27 23:25:24,447 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1878 transitions. Word has length 174 [2024-11-27 23:25:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:24,447 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1878 transitions. [2024-11-27 23:25:24,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1878 transitions. [2024-11-27 23:25:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-27 23:25:24,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:24,451 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:24,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 23:25:24,451 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:24,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1032085941, now seen corresponding path program 1 times [2024-11-27 23:25:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:24,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265680570] [2024-11-27 23:25:24,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:24,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:24,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265680570] [2024-11-27 23:25:24,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265680570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:24,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:24,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:25:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634354568] [2024-11-27 23:25:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:24,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:25:24,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:24,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:25:24,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:24,812 INFO L87 Difference]: Start difference. First operand 1162 states and 1878 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:25,023 INFO L93 Difference]: Finished difference Result 2290 states and 3721 transitions. [2024-11-27 23:25:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:25:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2024-11-27 23:25:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:25,033 INFO L225 Difference]: With dead ends: 2290 [2024-11-27 23:25:25,033 INFO L226 Difference]: Without dead ends: 1153 [2024-11-27 23:25:25,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:25:25,038 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 42 mSDsluCounter, 7116 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 8011 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:25,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 8011 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-27 23:25:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2024-11-27 23:25:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 902 states have (on average 1.6274944567627494) internal successors, (1468), 934 states have internal predecessors, (1468), 193 states have call successors, (193), 57 states have call predecessors, (193), 57 states have return successors, (202), 187 states have call predecessors, (202), 188 states have call successors, (202) [2024-11-27 23:25:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1863 transitions. [2024-11-27 23:25:25,082 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1863 transitions. Word has length 175 [2024-11-27 23:25:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:25,083 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1863 transitions. [2024-11-27 23:25:25,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1863 transitions. [2024-11-27 23:25:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-27 23:25:25,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:25,086 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:25,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 23:25:25,087 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:25,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash -688151430, now seen corresponding path program 1 times [2024-11-27 23:25:25,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:25,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896432427] [2024-11-27 23:25:25,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 23:25:25,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:25,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896432427] [2024-11-27 23:25:25,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896432427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:25,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:25,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:25:25,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861927966] [2024-11-27 23:25:25,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:25,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:25:25,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:25,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:25:25,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:25:25,451 INFO L87 Difference]: Start difference. First operand 1153 states and 1863 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:25,604 INFO L93 Difference]: Finished difference Result 2222 states and 3628 transitions. [2024-11-27 23:25:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:25:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 176 [2024-11-27 23:25:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:25,614 INFO L225 Difference]: With dead ends: 2222 [2024-11-27 23:25:25,614 INFO L226 Difference]: Without dead ends: 1147 [2024-11-27 23:25:25,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:25:25,618 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 29 mSDsluCounter, 6286 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7190 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:25,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7190 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-11-27 23:25:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2024-11-27 23:25:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 896 states have (on average 1.6305803571428572) internal successors, (1461), 928 states have internal predecessors, (1461), 193 states have call successors, (193), 57 states have call predecessors, (193), 57 states have return successors, (202), 187 states have call predecessors, (202), 188 states have call successors, (202) [2024-11-27 23:25:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1856 transitions. [2024-11-27 23:25:25,660 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1856 transitions. Word has length 176 [2024-11-27 23:25:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:25,661 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1856 transitions. [2024-11-27 23:25:25,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-27 23:25:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1856 transitions. [2024-11-27 23:25:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-27 23:25:25,663 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:25,664 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:25,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 23:25:25,664 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:25,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1605550648, now seen corresponding path program 1 times [2024-11-27 23:25:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040636875] [2024-11-27 23:25:25,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:25,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 23:25:25,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040636875] [2024-11-27 23:25:25,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040636875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:25,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89693378] [2024-11-27 23:25:25,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:25,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:25,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:25,815 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:25,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 23:25:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:26,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:25:26,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 23:25:26,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:26,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89693378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:26,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:26,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-27 23:25:26,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029066624] [2024-11-27 23:25:26,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:26,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:26,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:26,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:26,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:26,425 INFO L87 Difference]: Start difference. First operand 1147 states and 1856 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 23:25:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:26,974 INFO L93 Difference]: Finished difference Result 2212 states and 3667 transitions. [2024-11-27 23:25:26,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:25:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 176 [2024-11-27 23:25:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:26,982 INFO L225 Difference]: With dead ends: 2212 [2024-11-27 23:25:26,982 INFO L226 Difference]: Without dead ends: 1151 [2024-11-27 23:25:26,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:26,986 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 839 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:26,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2293 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:25:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2024-11-27 23:25:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2024-11-27 23:25:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 898 states have (on average 1.6202672605790647) internal successors, (1455), 932 states have internal predecessors, (1455), 193 states have call successors, (193), 57 states have call predecessors, (193), 59 states have return successors, (204), 187 states have call predecessors, (204), 188 states have call successors, (204) [2024-11-27 23:25:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1852 transitions. [2024-11-27 23:25:27,046 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1852 transitions. Word has length 176 [2024-11-27 23:25:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:27,046 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1852 transitions. [2024-11-27 23:25:27,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 23:25:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1852 transitions. [2024-11-27 23:25:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-27 23:25:27,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:27,051 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:27,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:27,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:27,252 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:27,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash 455554456, now seen corresponding path program 1 times [2024-11-27 23:25:27,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:27,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795568733] [2024-11-27 23:25:27,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:27,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 23:25:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795568733] [2024-11-27 23:25:27,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795568733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635036660] [2024-11-27 23:25:27,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:27,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:27,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:27,734 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:27,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 23:25:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:28,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:25:28,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 23:25:28,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:28,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635036660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:28,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:28,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-27 23:25:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274904926] [2024-11-27 23:25:28,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:28,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:25:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:28,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:25:28,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:25:28,555 INFO L87 Difference]: Start difference. First operand 1151 states and 1852 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-27 23:25:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:32,103 INFO L93 Difference]: Finished difference Result 2351 states and 3833 transitions. [2024-11-27 23:25:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:25:32,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 176 [2024-11-27 23:25:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:32,112 INFO L225 Difference]: With dead ends: 2351 [2024-11-27 23:25:32,112 INFO L226 Difference]: Without dead ends: 1286 [2024-11-27 23:25:32,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:25:32,117 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 3297 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 4767 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 5594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 4767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:32,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3401 Valid, 1783 Invalid, 5594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [827 Valid, 4767 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 23:25:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2024-11-27 23:25:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1237. [2024-11-27 23:25:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 962 states have (on average 1.6112266112266111) internal successors, (1550), 1000 states have internal predecessors, (1550), 209 states have call successors, (209), 59 states have call predecessors, (209), 65 states have return successors, (228), 203 states have call predecessors, (228), 204 states have call successors, (228) [2024-11-27 23:25:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1987 transitions. [2024-11-27 23:25:32,175 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1987 transitions. Word has length 176 [2024-11-27 23:25:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:32,176 INFO L471 AbstractCegarLoop]: Abstraction has 1237 states and 1987 transitions. [2024-11-27 23:25:32,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 5 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-27 23:25:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1987 transitions. [2024-11-27 23:25:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 23:25:32,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:32,180 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:32,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:32,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:32,381 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:32,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:32,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1037009677, now seen corresponding path program 1 times [2024-11-27 23:25:32,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:32,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083416419] [2024-11-27 23:25:32,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:32,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 23:25:32,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083416419] [2024-11-27 23:25:32,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083416419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816100034] [2024-11-27 23:25:32,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:32,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:32,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:32,923 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:32,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 23:25:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:33,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:25:33,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-27 23:25:33,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816100034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:33,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:33,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-27 23:25:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724517558] [2024-11-27 23:25:33,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:33,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:25:33,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:33,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:25:33,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:25:33,562 INFO L87 Difference]: Start difference. First operand 1237 states and 1987 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 23:25:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:34,455 INFO L93 Difference]: Finished difference Result 2375 states and 3859 transitions. [2024-11-27 23:25:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:25:34,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2024-11-27 23:25:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:34,465 INFO L225 Difference]: With dead ends: 2375 [2024-11-27 23:25:34,465 INFO L226 Difference]: Without dead ends: 1224 [2024-11-27 23:25:34,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:25:34,469 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 1342 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:34,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 318 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:25:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-11-27 23:25:34,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2024-11-27 23:25:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 954 states have (on average 1.6069182389937107) internal successors, (1533), 991 states have internal predecessors, (1533), 204 states have call successors, (204), 59 states have call predecessors, (204), 65 states have return successors, (224), 199 states have call predecessors, (224), 200 states have call successors, (224) [2024-11-27 23:25:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1961 transitions. [2024-11-27 23:25:34,560 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1961 transitions. Word has length 181 [2024-11-27 23:25:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:34,560 INFO L471 AbstractCegarLoop]: Abstraction has 1224 states and 1961 transitions. [2024-11-27 23:25:34,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 23:25:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1961 transitions. [2024-11-27 23:25:34,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 23:25:34,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:34,565 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:34,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-27 23:25:34,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-27 23:25:34,766 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:34,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2082650408, now seen corresponding path program 1 times [2024-11-27 23:25:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:34,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235181260] [2024-11-27 23:25:34,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:34,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 23:25:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235181260] [2024-11-27 23:25:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235181260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865059404] [2024-11-27 23:25:35,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:35,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:35,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:35,233 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:35,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 23:25:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:35,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:25:35,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-27 23:25:35,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:35,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865059404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:35,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:35,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-27 23:25:35,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163647911] [2024-11-27 23:25:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:35,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:35,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:35,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:35,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:25:35,764 INFO L87 Difference]: Start difference. First operand 1224 states and 1961 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-27 23:25:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:35,881 INFO L93 Difference]: Finished difference Result 1244 states and 1985 transitions. [2024-11-27 23:25:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:25:35,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2024-11-27 23:25:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:35,893 INFO L225 Difference]: With dead ends: 1244 [2024-11-27 23:25:35,893 INFO L226 Difference]: Without dead ends: 1230 [2024-11-27 23:25:35,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:25:35,895 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 0 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:35,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3621 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-11-27 23:25:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2024-11-27 23:25:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 960 states have (on average 1.603125) internal successors, (1539), 997 states have internal predecessors, (1539), 204 states have call successors, (204), 59 states have call predecessors, (204), 65 states have return successors, (224), 199 states have call predecessors, (224), 200 states have call successors, (224) [2024-11-27 23:25:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1967 transitions. [2024-11-27 23:25:36,002 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1967 transitions. Word has length 182 [2024-11-27 23:25:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:36,005 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1967 transitions. [2024-11-27 23:25:36,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-27 23:25:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1967 transitions. [2024-11-27 23:25:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-27 23:25:36,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:36,012 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:36,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-27 23:25:36,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:36,213 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:36,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:36,213 INFO L85 PathProgramCache]: Analyzing trace with hash -356015964, now seen corresponding path program 1 times [2024-11-27 23:25:36,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:36,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406344614] [2024-11-27 23:25:36,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:36,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 23:25:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406344614] [2024-11-27 23:25:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406344614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176152799] [2024-11-27 23:25:37,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:37,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:37,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:37,020 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:37,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 23:25:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:37,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:25:37,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-27 23:25:37,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-27 23:25:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176152799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:38,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-27 23:25:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223085557] [2024-11-27 23:25:38,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:38,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:25:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:38,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:25:38,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:25:38,328 INFO L87 Difference]: Start difference. First operand 1230 states and 1967 transitions. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 12 states have internal predecessors, (269), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-27 23:25:47,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:47,815 INFO L93 Difference]: Finished difference Result 6225 states and 10210 transitions. [2024-11-27 23:25:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-27 23:25:47,815 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 12 states have internal predecessors, (269), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) Word has length 273 [2024-11-27 23:25:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:47,844 INFO L225 Difference]: With dead ends: 6225 [2024-11-27 23:25:47,844 INFO L226 Difference]: Without dead ends: 5071 [2024-11-27 23:25:47,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 562 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=503, Invalid=2919, Unknown=0, NotChecked=0, Total=3422 [2024-11-27 23:25:47,855 INFO L435 NwaCegarLoop]: 674 mSDtfsCounter, 7174 mSDsluCounter, 4728 mSDsCounter, 0 mSdLazyCounter, 14551 mSolverCounterSat, 2315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7174 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 16866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2315 IncrementalHoareTripleChecker+Valid, 14551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:47,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7174 Valid, 5402 Invalid, 16866 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2315 Valid, 14551 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-27 23:25:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2024-11-27 23:25:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 4461. [2024-11-27 23:25:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4461 states, 3434 states have (on average 1.5777518928363425) internal successors, (5418), 3559 states have internal predecessors, (5418), 775 states have call successors, (775), 187 states have call predecessors, (775), 251 states have return successors, (1021), 772 states have call predecessors, (1021), 771 states have call successors, (1021) [2024-11-27 23:25:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 7214 transitions. [2024-11-27 23:25:48,336 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 7214 transitions. Word has length 273 [2024-11-27 23:25:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:48,337 INFO L471 AbstractCegarLoop]: Abstraction has 4461 states and 7214 transitions. [2024-11-27 23:25:48,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 12 states have internal predecessors, (269), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-27 23:25:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 7214 transitions. [2024-11-27 23:25:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-27 23:25:48,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:48,347 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:48,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-27 23:25:48,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:48,547 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:48,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:48,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1091844128, now seen corresponding path program 1 times [2024-11-27 23:25:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:48,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811974357] [2024-11-27 23:25:48,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-27 23:25:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811974357] [2024-11-27 23:25:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811974357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878831095] [2024-11-27 23:25:48,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:48,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:48,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:48,990 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:48,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-27 23:25:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:49,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:25:49,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:25:49,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:49,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878831095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:49,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:49,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-27 23:25:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927198056] [2024-11-27 23:25:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:49,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:25:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:49,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:25:49,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:25:49,609 INFO L87 Difference]: Start difference. First operand 4461 states and 7214 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 23:25:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:49,831 INFO L93 Difference]: Finished difference Result 6651 states and 10805 transitions. [2024-11-27 23:25:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:25:49,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 281 [2024-11-27 23:25:49,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:49,854 INFO L225 Difference]: With dead ends: 6651 [2024-11-27 23:25:49,854 INFO L226 Difference]: Without dead ends: 4497 [2024-11-27 23:25:49,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:25:49,865 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 0 mSDsluCounter, 4546 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:49,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5459 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2024-11-27 23:25:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 4479. [2024-11-27 23:25:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 3448 states have (on average 1.5754060324825987) internal successors, (5432), 3575 states have internal predecessors, (5432), 775 states have call successors, (775), 187 states have call predecessors, (775), 255 states have return successors, (1025), 774 states have call predecessors, (1025), 771 states have call successors, (1025) [2024-11-27 23:25:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 7232 transitions. [2024-11-27 23:25:50,227 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 7232 transitions. Word has length 281 [2024-11-27 23:25:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:50,228 INFO L471 AbstractCegarLoop]: Abstraction has 4479 states and 7232 transitions. [2024-11-27 23:25:50,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 23:25:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 7232 transitions. [2024-11-27 23:25:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-27 23:25:50,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:50,237 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:50,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-27 23:25:50,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:50,438 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:50,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1635268508, now seen corresponding path program 1 times [2024-11-27 23:25:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:50,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076598317] [2024-11-27 23:25:50,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:50,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-27 23:25:50,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076598317] [2024-11-27 23:25:50,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076598317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668293590] [2024-11-27 23:25:50,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:50,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:50,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:50,683 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:50,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 23:25:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:51,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:25:51,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-27 23:25:51,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-27 23:25:53,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668293590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:53,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:53,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 14] total 24 [2024-11-27 23:25:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204349497] [2024-11-27 23:25:53,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:53,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:25:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:53,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:25:53,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:25:53,245 INFO L87 Difference]: Start difference. First operand 4479 states and 7232 transitions. Second operand has 24 states, 22 states have (on average 13.5) internal successors, (297), 22 states have internal predecessors, (297), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-27 23:26:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:10,404 INFO L93 Difference]: Finished difference Result 25100 states and 41549 transitions. [2024-11-27 23:26:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-27 23:26:10,405 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 13.5) internal successors, (297), 22 states have internal predecessors, (297), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) Word has length 287 [2024-11-27 23:26:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:10,488 INFO L225 Difference]: With dead ends: 25100 [2024-11-27 23:26:10,488 INFO L226 Difference]: Without dead ends: 19220 [2024-11-27 23:26:10,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 612 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6500 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2360, Invalid=16000, Unknown=0, NotChecked=0, Total=18360 [2024-11-27 23:26:10,533 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 16747 mSDsluCounter, 9507 mSDsCounter, 0 mSdLazyCounter, 18847 mSolverCounterSat, 5497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16783 SdHoareTripleChecker+Valid, 10486 SdHoareTripleChecker+Invalid, 24344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5497 IncrementalHoareTripleChecker+Valid, 18847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:10,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16783 Valid, 10486 Invalid, 24344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5497 Valid, 18847 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-11-27 23:26:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19220 states. [2024-11-27 23:26:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19220 to 18514. [2024-11-27 23:26:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18514 states, 13697 states have (on average 1.5311382054464482) internal successors, (20972), 14384 states have internal predecessors, (20972), 3725 states have call successors, (3725), 817 states have call predecessors, (3725), 1091 states have return successors, (5062), 3776 states have call predecessors, (5062), 3721 states have call successors, (5062) [2024-11-27 23:26:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18514 states to 18514 states and 29759 transitions. [2024-11-27 23:26:12,438 INFO L78 Accepts]: Start accepts. Automaton has 18514 states and 29759 transitions. Word has length 287 [2024-11-27 23:26:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:12,438 INFO L471 AbstractCegarLoop]: Abstraction has 18514 states and 29759 transitions. [2024-11-27 23:26:12,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 13.5) internal successors, (297), 22 states have internal predecessors, (297), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-27 23:26:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 18514 states and 29759 transitions. [2024-11-27 23:26:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-27 23:26:12,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:12,448 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:12,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-27 23:26:12,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 23:26:12,648 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:12,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2123629223, now seen corresponding path program 1 times [2024-11-27 23:26:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:12,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603714605] [2024-11-27 23:26:12,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:12,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-27 23:26:12,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:12,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603714605] [2024-11-27 23:26:12,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603714605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:12,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:26:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812651438] [2024-11-27 23:26:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:12,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:26:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:12,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:26:12,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:26:12,921 INFO L87 Difference]: Start difference. First operand 18514 states and 29759 transitions. Second operand has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-27 23:26:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:14,260 INFO L93 Difference]: Finished difference Result 36951 states and 59428 transitions. [2024-11-27 23:26:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:26:14,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 227 [2024-11-27 23:26:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:14,369 INFO L225 Difference]: With dead ends: 36951 [2024-11-27 23:26:14,369 INFO L226 Difference]: Without dead ends: 18505 [2024-11-27 23:26:14,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:26:14,439 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 38 mSDsluCounter, 5333 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:14,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6230 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:26:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18505 states. [2024-11-27 23:26:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18505 to 18505. [2024-11-27 23:26:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18505 states, 13690 states have (on average 1.5308984660336011) internal successors, (20958), 14376 states have internal predecessors, (20958), 3725 states have call successors, (3725), 817 states have call predecessors, (3725), 1089 states have return successors, (5058), 3775 states have call predecessors, (5058), 3721 states have call successors, (5058) [2024-11-27 23:26:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 29741 transitions. [2024-11-27 23:26:16,268 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 29741 transitions. Word has length 227 [2024-11-27 23:26:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:16,268 INFO L471 AbstractCegarLoop]: Abstraction has 18505 states and 29741 transitions. [2024-11-27 23:26:16,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-27 23:26:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 29741 transitions. [2024-11-27 23:26:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-27 23:26:16,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:16,276 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:16,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 23:26:16,276 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:16,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1668120248, now seen corresponding path program 1 times [2024-11-27 23:26:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:16,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898726252] [2024-11-27 23:26:16,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-27 23:26:16,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:16,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898726252] [2024-11-27 23:26:16,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898726252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:16,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469829031] [2024-11-27 23:26:16,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:16,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:16,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:16,530 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:16,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-27 23:26:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:17,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 2067 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:26:17,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-27 23:26:17,083 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:26:17,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469829031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:17,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:26:17,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-27 23:26:17,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148219800] [2024-11-27 23:26:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:17,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:17,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:17,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:26:17,085 INFO L87 Difference]: Start difference. First operand 18505 states and 29741 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-27 23:26:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:17,616 INFO L93 Difference]: Finished difference Result 26903 states and 43012 transitions. [2024-11-27 23:26:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 228 [2024-11-27 23:26:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:17,663 INFO L225 Difference]: With dead ends: 26903 [2024-11-27 23:26:17,663 INFO L226 Difference]: Without dead ends: 8438 [2024-11-27 23:26:17,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:26:17,718 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 0 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:17,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2668 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:26:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2024-11-27 23:26:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8438. [2024-11-27 23:26:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 6341 states have (on average 1.528938653209273) internal successors, (9695), 6668 states have internal predecessors, (9695), 1534 states have call successors, (1534), 409 states have call predecessors, (1534), 562 states have return successors, (2083), 1552 states have call predecessors, (2083), 1530 states have call successors, (2083) [2024-11-27 23:26:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 13312 transitions. [2024-11-27 23:26:18,398 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 13312 transitions. Word has length 228 [2024-11-27 23:26:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:18,398 INFO L471 AbstractCegarLoop]: Abstraction has 8438 states and 13312 transitions. [2024-11-27 23:26:18,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-27 23:26:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 13312 transitions. [2024-11-27 23:26:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-27 23:26:18,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:18,401 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:18,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-27 23:26:18,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:18,602 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:18,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash -941280342, now seen corresponding path program 1 times [2024-11-27 23:26:18,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:18,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592234755] [2024-11-27 23:26:18,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:18,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-27 23:26:19,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592234755] [2024-11-27 23:26:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592234755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547947505] [2024-11-27 23:26:19,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:19,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:19,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:19,016 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:19,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 23:26:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:19,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:26:19,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-27 23:26:19,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-27 23:26:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547947505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:26:20,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:26:20,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-11-27 23:26:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219944593] [2024-11-27 23:26:20,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:26:20,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:26:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:20,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:26:20,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:26:20,633 INFO L87 Difference]: Start difference. First operand 8438 states and 13312 transitions. Second operand has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 19 states have internal predecessors, (313), 11 states have call successors, (62), 6 states have call predecessors, (62), 14 states have return successors, (63), 15 states have call predecessors, (63), 10 states have call successors, (63) [2024-11-27 23:26:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:31,263 INFO L93 Difference]: Finished difference Result 27334 states and 43847 transitions. [2024-11-27 23:26:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 23:26:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 19 states have internal predecessors, (313), 11 states have call successors, (62), 6 states have call predecessors, (62), 14 states have return successors, (63), 15 states have call predecessors, (63), 10 states have call successors, (63) Word has length 236 [2024-11-27 23:26:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:31,418 INFO L225 Difference]: With dead ends: 27334 [2024-11-27 23:26:31,419 INFO L226 Difference]: Without dead ends: 18983 [2024-11-27 23:26:31,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 23:26:31,490 INFO L435 NwaCegarLoop]: 755 mSDtfsCounter, 7469 mSDsluCounter, 7874 mSDsCounter, 0 mSdLazyCounter, 17347 mSolverCounterSat, 2386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7469 SdHoareTripleChecker+Valid, 8629 SdHoareTripleChecker+Invalid, 19733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2386 IncrementalHoareTripleChecker+Valid, 17347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:31,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7469 Valid, 8629 Invalid, 19733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2386 Valid, 17347 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-27 23:26:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18983 states. [2024-11-27 23:26:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18983 to 18579. [2024-11-27 23:26:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18579 states, 13757 states have (on average 1.5248237261030748) internal successors, (20977), 14481 states have internal predecessors, (20977), 3678 states have call successors, (3678), 802 states have call predecessors, (3678), 1143 states have return successors, (5088), 3759 states have call predecessors, (5088), 3674 states have call successors, (5088) [2024-11-27 23:26:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18579 states to 18579 states and 29743 transitions. [2024-11-27 23:26:33,722 INFO L78 Accepts]: Start accepts. Automaton has 18579 states and 29743 transitions. Word has length 236 [2024-11-27 23:26:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:33,723 INFO L471 AbstractCegarLoop]: Abstraction has 18579 states and 29743 transitions. [2024-11-27 23:26:33,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 19 states have internal predecessors, (313), 11 states have call successors, (62), 6 states have call predecessors, (62), 14 states have return successors, (63), 15 states have call predecessors, (63), 10 states have call successors, (63) [2024-11-27 23:26:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 18579 states and 29743 transitions. [2024-11-27 23:26:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-27 23:26:33,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:33,733 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:33,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-27 23:26:33,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c3d19d-4d85-4584-b2c8-8cb54570ed08/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:33,934 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:33,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1981719404, now seen corresponding path program 1 times [2024-11-27 23:26:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:33,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128520593] [2024-11-27 23:26:33,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:33,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-27 23:26:34,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:34,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128520593] [2024-11-27 23:26:34,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128520593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:34,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:34,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:26:34,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867354856] [2024-11-27 23:26:34,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:34,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:26:34,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:34,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:26:34,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:26:34,135 INFO L87 Difference]: Start difference. First operand 18579 states and 29743 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-27 23:26:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:40,938 INFO L93 Difference]: Finished difference Result 69067 states and 116065 transitions. [2024-11-27 23:26:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:26:40,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 243 [2024-11-27 23:26:40,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:41,232 INFO L225 Difference]: With dead ends: 69067 [2024-11-27 23:26:41,232 INFO L226 Difference]: Without dead ends: 50625 [2024-11-27 23:26:41,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:26:41,352 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 3444 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 4703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:41,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3484 Valid, 2025 Invalid, 4703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 3644 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 23:26:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50625 states. [2024-11-27 23:26:44,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50625 to 43769. [2024-11-27 23:26:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43769 states, 30812 states have (on average 1.5177528235752304) internal successors, (46765), 32899 states have internal predecessors, (46765), 10711 states have call successors, (10711), 1514 states have call predecessors, (10711), 2245 states have return successors, (14478), 10955 states have call predecessors, (14478), 10707 states have call successors, (14478) [2024-11-27 23:26:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43769 states to 43769 states and 71954 transitions. [2024-11-27 23:26:44,929 INFO L78 Accepts]: Start accepts. Automaton has 43769 states and 71954 transitions. Word has length 243 [2024-11-27 23:26:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:44,930 INFO L471 AbstractCegarLoop]: Abstraction has 43769 states and 71954 transitions. [2024-11-27 23:26:44,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-27 23:26:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 43769 states and 71954 transitions. [2024-11-27 23:26:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-27 23:26:44,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:44,941 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:44,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-27 23:26:44,941 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:44,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1811482001, now seen corresponding path program 1 times [2024-11-27 23:26:44,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:44,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873912507] [2024-11-27 23:26:44,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:44,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-27 23:26:45,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873912507] [2024-11-27 23:26:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873912507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:45,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:45,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:26:45,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151466651] [2024-11-27 23:26:45,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:45,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:26:45,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:45,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:26:45,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:26:45,372 INFO L87 Difference]: Start difference. First operand 43769 states and 71954 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25)