./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product18.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_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/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_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/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_a1d7a09d-8f90-438b-af5e-a1b43abb9082/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 b60f36c6abb85551baa468c8faf905605a37519376312e75fd6944689b1d0b8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:45:54,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:45:54,429 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:45:54,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:45:54,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:45:54,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:45:54,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:45:54,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:45:54,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:45:54,470 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:45:54,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:45:54,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:45:54,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:45:54,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:45:54,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:45:54,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:45:54,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:45:54,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:45:54,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:45:54,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:45:54,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:45:54,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:45:54,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:45:54,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:45:54,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:45:54,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:45:54,476 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:45:54,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:45:54,476 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:45:54,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:45:54,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:45:54,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:45:54,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:45:54,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:45:54,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:45:54,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:45:54,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:45:54,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:45:54,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:45:54,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:45:54,479 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:45:54,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:45:54,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:45:54,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:45:54,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:45:54,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:45:54,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:45:54,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:45:54,480 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_a1d7a09d-8f90-438b-af5e-a1b43abb9082/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 -> b60f36c6abb85551baa468c8faf905605a37519376312e75fd6944689b1d0b8d [2024-11-28 02:45:54,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:45:54,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:45:54,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:45:54,839 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:45:54,839 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:45:54,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c [2024-11-28 02:45:58,223 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/data/873b1958a/366fb7f9880d41ef83da02ce0164e2ec/FLAGf180c1f1f [2024-11-28 02:45:58,737 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:45:58,738 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c [2024-11-28 02:45:58,770 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/data/873b1958a/366fb7f9880d41ef83da02ce0164e2ec/FLAGf180c1f1f [2024-11-28 02:45:58,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/data/873b1958a/366fb7f9880d41ef83da02ce0164e2ec [2024-11-28 02:45:58,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:45:58,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:45:58,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:45:58,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:45:58,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:45:58,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:45:58" (1/1) ... [2024-11-28 02:45:58,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267ac070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:58, skipping insertion in model container [2024-11-28 02:45:58,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:45:58" (1/1) ... [2024-11-28 02:45:58,931 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:45:59,390 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_a1d7a09d-8f90-438b-af5e-a1b43abb9082/sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c[32398,32411] [2024-11-28 02:45:59,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:45:59,633 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:45:59,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-28 02:45:59,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2024-11-28 02:45:59,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [452] [2024-11-28 02:45:59,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1120] [2024-11-28 02:45:59,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1476] [2024-11-28 02:45:59,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1485] [2024-11-28 02:45:59,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2984] [2024-11-28 02:45:59,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3102] [2024-11-28 02:45:59,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3288] [2024-11-28 02:45:59,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3303] [2024-11-28 02:45:59,766 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_a1d7a09d-8f90-438b-af5e-a1b43abb9082/sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c[32398,32411] [2024-11-28 02:45:59,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:45:59,867 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:45:59,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59 WrapperNode [2024-11-28 02:45:59,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:45:59,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:45:59,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:45:59,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:45:59,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:45:59,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:45:59,954 INFO L138 Inliner]: procedures = 90, calls = 344, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 817 [2024-11-28 02:45:59,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:45:59,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:45:59,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:45:59,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:45:59,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:45:59,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:45:59,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,004 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]. [2024-11-28 02:46:00,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,032 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:46:00,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:46:00,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:46:00,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:46:00,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (1/1) ... [2024-11-28 02:46:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:46:00,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:46:00,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:46:00,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:46:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:46:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-28 02:46:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-28 02:46:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 02:46:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 02:46:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 02:46:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 02:46:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 02:46:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 02:46:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 02:46:00,194 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 02:46:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 02:46:00,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 02:46:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 02:46:00,194 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 02:46:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 02:46:00,194 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 02:46:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 02:46:00,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 02:46:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 02:46:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 02:46:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 02:46:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 02:46:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 02:46:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 02:46:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-28 02:46:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-28 02:46:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 02:46:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 02:46:00,195 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 02:46:00,195 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 02:46:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-28 02:46:00,196 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-28 02:46:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 02:46:00,196 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 02:46:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 02:46:00,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 02:46:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 02:46:00,200 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:46:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 02:46:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2024-11-28 02:46:00,202 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2024-11-28 02:46:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 02:46:00,202 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 02:46:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 02:46:00,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 02:46:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 02:46:00,202 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 02:46:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 02:46:00,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 02:46:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:46:00,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:46:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 02:46:00,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 02:46:00,493 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:46:00,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:46:02,399 INFO L? ?]: Removed 439 outVars from TransFormulas that were not future-live. [2024-11-28 02:46:02,399 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:46:02,441 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:46:02,442 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:46:02,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:02 BoogieIcfgContainer [2024-11-28 02:46:02,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:46:02,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:46:02,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:46:02,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:46:02,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:45:58" (1/3) ... [2024-11-28 02:46:02,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8010e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:46:02, skipping insertion in model container [2024-11-28 02:46:02,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:59" (2/3) ... [2024-11-28 02:46:02,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8010e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:46:02, skipping insertion in model container [2024-11-28 02:46:02,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:02" (3/3) ... [2024-11-28 02:46:02,453 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product18.cil.c [2024-11-28 02:46:02,471 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:46:02,474 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product18.cil.c that has 26 procedures, 568 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:46:02,587 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:46:02,601 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;@42809e00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:46:02,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:46:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 568 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 459 states have internal predecessors, (740), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 02:46:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:46:02,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:02,623 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:02,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1694182699, now seen corresponding path program 1 times [2024-11-28 02:46:02,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:02,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020261530] [2024-11-28 02:46:02,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:03,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020261530] [2024-11-28 02:46:03,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020261530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:03,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:03,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:46:03,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756959789] [2024-11-28 02:46:03,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:03,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:46:03,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:03,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:46:03,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:03,812 INFO L87 Difference]: Start difference. First operand has 568 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 459 states have internal predecessors, (740), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:04,193 INFO L93 Difference]: Finished difference Result 1133 states and 1900 transitions. [2024-11-28 02:46:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:46:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2024-11-28 02:46:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:04,216 INFO L225 Difference]: With dead ends: 1133 [2024-11-28 02:46:04,216 INFO L226 Difference]: Without dead ends: 573 [2024-11-28 02:46:04,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:46:04,230 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 91 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5471 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:04,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5471 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-28 02:46:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2024-11-28 02:46:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 462 states have internal predecessors, (741), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-28 02:46:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 946 transitions. [2024-11-28 02:46:04,390 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 946 transitions. Word has length 63 [2024-11-28 02:46:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:04,390 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 946 transitions. [2024-11-28 02:46:04,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 946 transitions. [2024-11-28 02:46:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 02:46:04,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:04,397 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:04,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:46:04,398 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:04,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:04,398 INFO L85 PathProgramCache]: Analyzing trace with hash 439534225, now seen corresponding path program 1 times [2024-11-28 02:46:04,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:04,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765476371] [2024-11-28 02:46:04,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:04,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:04,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:04,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765476371] [2024-11-28 02:46:04,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765476371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:04,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:46:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151495867] [2024-11-28 02:46:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:04,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:46:04,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:04,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:46:04,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:04,905 INFO L87 Difference]: Start difference. First operand 571 states and 946 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:05,120 INFO L93 Difference]: Finished difference Result 1137 states and 1895 transitions. [2024-11-28 02:46:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:46:05,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-28 02:46:05,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:05,135 INFO L225 Difference]: With dead ends: 1137 [2024-11-28 02:46:05,135 INFO L226 Difference]: Without dead ends: 582 [2024-11-28 02:46:05,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:46:05,139 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 90 mSDsluCounter, 4539 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:05,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5466 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-28 02:46:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 571. [2024-11-28 02:46:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 462 states have internal predecessors, (741), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-28 02:46:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 946 transitions. [2024-11-28 02:46:05,190 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 946 transitions. Word has length 64 [2024-11-28 02:46:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:05,191 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 946 transitions. [2024-11-28 02:46:05,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 946 transitions. [2024-11-28 02:46:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 02:46:05,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:05,195 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:05,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:46:05,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:05,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:05,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1736672470, now seen corresponding path program 1 times [2024-11-28 02:46:05,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:05,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905795799] [2024-11-28 02:46:05,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:05,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:05,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:05,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905795799] [2024-11-28 02:46:05,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905795799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:05,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:05,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:05,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636736574] [2024-11-28 02:46:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:05,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:05,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:05,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:05,510 INFO L87 Difference]: Start difference. First operand 571 states and 946 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:05,623 INFO L93 Difference]: Finished difference Result 1124 states and 1873 transitions. [2024-11-28 02:46:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:46:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-28 02:46:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:05,635 INFO L225 Difference]: With dead ends: 1124 [2024-11-28 02:46:05,636 INFO L226 Difference]: Without dead ends: 541 [2024-11-28 02:46:05,641 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 [2024-11-28 02:46:05,643 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 14 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:05,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2743 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-28 02:46:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2024-11-28 02:46:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 415 states have (on average 1.6602409638554216) internal successors, (689), 433 states have internal predecessors, (689), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 890 transitions. [2024-11-28 02:46:05,704 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 890 transitions. Word has length 64 [2024-11-28 02:46:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:05,706 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 890 transitions. [2024-11-28 02:46:05,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 890 transitions. [2024-11-28 02:46:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:46:05,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:05,709 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:05,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:46:05,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:05,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1146914937, now seen corresponding path program 1 times [2024-11-28 02:46:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:05,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908442071] [2024-11-28 02:46:05,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:05,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:06,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908442071] [2024-11-28 02:46:06,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908442071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:06,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:06,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:46:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972741655] [2024-11-28 02:46:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:06,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:46:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:06,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:46:06,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:06,130 INFO L87 Difference]: Start difference. First operand 541 states and 890 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:06,297 INFO L93 Difference]: Finished difference Result 1075 states and 1779 transitions. [2024-11-28 02:46:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:46:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-28 02:46:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:06,308 INFO L225 Difference]: With dead ends: 1075 [2024-11-28 02:46:06,308 INFO L226 Difference]: Without dead ends: 535 [2024-11-28 02:46:06,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:46:06,313 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 63 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:06,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5222 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-28 02:46:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-28 02:46:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 409 states have (on average 1.6528117359413204) internal successors, (676), 427 states have internal predecessors, (676), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 877 transitions. [2024-11-28 02:46:06,349 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 877 transitions. Word has length 65 [2024-11-28 02:46:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:06,350 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 877 transitions. [2024-11-28 02:46:06,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 877 transitions. [2024-11-28 02:46:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:46:06,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:06,355 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:06,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:46:06,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:06,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash 587546037, now seen corresponding path program 1 times [2024-11-28 02:46:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:06,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491277263] [2024-11-28 02:46:06,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:06,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:06,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491277263] [2024-11-28 02:46:06,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491277263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:06,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:06,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:46:06,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705977383] [2024-11-28 02:46:06,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:06,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:46:06,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:06,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:46:06,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:06,726 INFO L87 Difference]: Start difference. First operand 535 states and 877 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:06,892 INFO L93 Difference]: Finished difference Result 1063 states and 1753 transitions. [2024-11-28 02:46:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:46:06,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-28 02:46:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:06,902 INFO L225 Difference]: With dead ends: 1063 [2024-11-28 02:46:06,902 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 02:46:06,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:46:06,908 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 49 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5162 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:06,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5162 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 02:46:06,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 02:46:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6451612903225807) internal successors, (663), 421 states have internal predecessors, (663), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 864 transitions. [2024-11-28 02:46:06,966 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 864 transitions. Word has length 66 [2024-11-28 02:46:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:06,967 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 864 transitions. [2024-11-28 02:46:06,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 864 transitions. [2024-11-28 02:46:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:46:06,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:06,970 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:06,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:46:06,970 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:06,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:06,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1074793098, now seen corresponding path program 1 times [2024-11-28 02:46:06,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:06,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503952760] [2024-11-28 02:46:06,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:06,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503952760] [2024-11-28 02:46:07,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503952760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:07,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:46:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650429844] [2024-11-28 02:46:07,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:07,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:46:07,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:07,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:46:07,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:07,263 INFO L87 Difference]: Start difference. First operand 529 states and 864 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:07,375 INFO L93 Difference]: Finished difference Result 1051 states and 1727 transitions. [2024-11-28 02:46:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:46:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-28 02:46:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:07,381 INFO L225 Difference]: With dead ends: 1051 [2024-11-28 02:46:07,382 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 02:46:07,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:46:07,387 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 24 mSDsluCounter, 4258 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5114 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:07,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5114 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 02:46:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 02:46:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6426799007444168) internal successors, (662), 421 states have internal predecessors, (662), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 863 transitions. [2024-11-28 02:46:07,425 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 863 transitions. Word has length 66 [2024-11-28 02:46:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:07,428 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 863 transitions. [2024-11-28 02:46:07,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 863 transitions. [2024-11-28 02:46:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 02:46:07,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:07,430 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:07,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:46:07,431 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:07,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash -586355171, now seen corresponding path program 1 times [2024-11-28 02:46:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702913371] [2024-11-28 02:46:07,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702913371] [2024-11-28 02:46:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702913371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009334194] [2024-11-28 02:46:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:07,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:07,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:07,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:07,598 INFO L87 Difference]: Start difference. First operand 529 states and 863 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:07,687 INFO L93 Difference]: Finished difference Result 1042 states and 1712 transitions. [2024-11-28 02:46:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:46:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-28 02:46:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:07,696 INFO L225 Difference]: With dead ends: 1042 [2024-11-28 02:46:07,697 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 02:46:07,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:07,703 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 15 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:07,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2529 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 02:46:07,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 02:46:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6401985111662531) internal successors, (661), 421 states have internal predecessors, (661), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 862 transitions. [2024-11-28 02:46:07,744 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 862 transitions. Word has length 67 [2024-11-28 02:46:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:07,745 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 862 transitions. [2024-11-28 02:46:07,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 862 transitions. [2024-11-28 02:46:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:46:07,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:07,752 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:07,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:46:07,752 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:07,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1415085163, now seen corresponding path program 1 times [2024-11-28 02:46:07,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:07,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996782549] [2024-11-28 02:46:07,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:07,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996782549] [2024-11-28 02:46:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996782549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:07,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031509796] [2024-11-28 02:46:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:07,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:07,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:07,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:07,925 INFO L87 Difference]: Start difference. First operand 529 states and 862 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:08,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:08,010 INFO L93 Difference]: Finished difference Result 1042 states and 1710 transitions. [2024-11-28 02:46:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:46:08,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-28 02:46:08,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:08,019 INFO L225 Difference]: With dead ends: 1042 [2024-11-28 02:46:08,019 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 02:46:08,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:08,023 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 14 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:08,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2531 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 02:46:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 02:46:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6377171215880892) internal successors, (660), 421 states have internal predecessors, (660), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 861 transitions. [2024-11-28 02:46:08,059 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 861 transitions. Word has length 68 [2024-11-28 02:46:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:08,059 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 861 transitions. [2024-11-28 02:46:08,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 861 transitions. [2024-11-28 02:46:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:46:08,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:08,061 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:08,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:46:08,061 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:08,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1298441246, now seen corresponding path program 1 times [2024-11-28 02:46:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:08,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735217118] [2024-11-28 02:46:08,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:08,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735217118] [2024-11-28 02:46:08,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735217118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:08,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:08,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:08,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007085100] [2024-11-28 02:46:08,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:08,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:08,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:08,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:08,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:08,215 INFO L87 Difference]: Start difference. First operand 529 states and 861 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:08,311 INFO L93 Difference]: Finished difference Result 1042 states and 1708 transitions. [2024-11-28 02:46:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:46:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-28 02:46:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:08,319 INFO L225 Difference]: With dead ends: 1042 [2024-11-28 02:46:08,319 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 02:46:08,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:08,325 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 13 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:08,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2533 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 02:46:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 02:46:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6352357320099256) internal successors, (659), 421 states have internal predecessors, (659), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 860 transitions. [2024-11-28 02:46:08,364 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 860 transitions. Word has length 69 [2024-11-28 02:46:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:08,365 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 860 transitions. [2024-11-28 02:46:08,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 860 transitions. [2024-11-28 02:46:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:46:08,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:08,367 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:08,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:46:08,367 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:08,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1939977222, now seen corresponding path program 1 times [2024-11-28 02:46:08,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:08,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146431544] [2024-11-28 02:46:08,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:08,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:08,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:08,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146431544] [2024-11-28 02:46:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146431544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:08,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:08,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:08,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395712002] [2024-11-28 02:46:08,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:08,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:08,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:08,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:08,527 INFO L87 Difference]: Start difference. First operand 529 states and 860 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:08,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:08,599 INFO L93 Difference]: Finished difference Result 1042 states and 1706 transitions. [2024-11-28 02:46:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:46:08,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-28 02:46:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:08,606 INFO L225 Difference]: With dead ends: 1042 [2024-11-28 02:46:08,607 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 02:46:08,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:08,612 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 12 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:08,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2535 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 02:46:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 02:46:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6327543424317619) internal successors, (658), 421 states have internal predecessors, (658), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:46:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 859 transitions. [2024-11-28 02:46:08,649 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 859 transitions. Word has length 70 [2024-11-28 02:46:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:08,650 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 859 transitions. [2024-11-28 02:46:08,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:46:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 859 transitions. [2024-11-28 02:46:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:46:08,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:08,652 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:08,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:46:08,654 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:08,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:08,654 INFO L85 PathProgramCache]: Analyzing trace with hash -315286105, now seen corresponding path program 1 times [2024-11-28 02:46:08,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:08,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525854982] [2024-11-28 02:46:08,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:08,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:46:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525854982] [2024-11-28 02:46:08,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525854982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:46:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924855718] [2024-11-28 02:46:08,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:08,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:46:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:46:08,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:46:08,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:46:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:09,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:46:09,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:46:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:46:09,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:46:09,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924855718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:09,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:46:09,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 02:46:09,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845389691] [2024-11-28 02:46:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:09,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:46:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:09,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:46:09,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:09,539 INFO L87 Difference]: Start difference. First operand 529 states and 859 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:09,643 INFO L93 Difference]: Finished difference Result 1499 states and 2467 transitions. [2024-11-28 02:46:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:46:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2024-11-28 02:46:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:09,654 INFO L225 Difference]: With dead ends: 1499 [2024-11-28 02:46:09,655 INFO L226 Difference]: Without dead ends: 988 [2024-11-28 02:46:09,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:09,659 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 823 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:09,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1626 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-11-28 02:46:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2024-11-28 02:46:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 748 states have (on average 1.6470588235294117) internal successors, (1232), 783 states have internal predecessors, (1232), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2024-11-28 02:46:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1594 transitions. [2024-11-28 02:46:09,723 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1594 transitions. Word has length 71 [2024-11-28 02:46:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:09,724 INFO L471 AbstractCegarLoop]: Abstraction has 973 states and 1594 transitions. [2024-11-28 02:46:09,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1594 transitions. [2024-11-28 02:46:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:46:09,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:09,726 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:09,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:46:09,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:46:09,930 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:09,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:09,930 INFO L85 PathProgramCache]: Analyzing trace with hash 520758651, now seen corresponding path program 1 times [2024-11-28 02:46:09,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:09,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802650732] [2024-11-28 02:46:09,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:09,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:46:10,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802650732] [2024-11-28 02:46:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802650732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:46:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131271355] [2024-11-28 02:46:10,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:46:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:46:10,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:46:10,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:46:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:10,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:46:10,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:46:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:46:10,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:46:10,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131271355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:10,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:46:10,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 02:46:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563621613] [2024-11-28 02:46:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:10,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:46:10,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:10,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:46:10,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:10,799 INFO L87 Difference]: Start difference. First operand 973 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:10,946 INFO L93 Difference]: Finished difference Result 2387 states and 3939 transitions. [2024-11-28 02:46:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:46:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-28 02:46:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:10,968 INFO L225 Difference]: With dead ends: 2387 [2024-11-28 02:46:10,968 INFO L226 Difference]: Without dead ends: 1432 [2024-11-28 02:46:10,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:46:10,976 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 826 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:10,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1670 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:46:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2024-11-28 02:46:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1384. [2024-11-28 02:46:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1066 states have (on average 1.6604127579737336) internal successors, (1770), 1118 states have internal predecessors, (1770), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2024-11-28 02:46:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2287 transitions. [2024-11-28 02:46:11,140 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2287 transitions. Word has length 72 [2024-11-28 02:46:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:11,141 INFO L471 AbstractCegarLoop]: Abstraction has 1384 states and 2287 transitions. [2024-11-28 02:46:11,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:46:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2287 transitions. [2024-11-28 02:46:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 02:46:11,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:11,144 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:11,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:46:11,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:46:11,345 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:11,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:11,346 INFO L85 PathProgramCache]: Analyzing trace with hash -779176834, now seen corresponding path program 1 times [2024-11-28 02:46:11,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:11,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706242737] [2024-11-28 02:46:11,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706242737] [2024-11-28 02:46:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706242737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:11,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:11,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:46:11,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213972424] [2024-11-28 02:46:11,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:11,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:46:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:11,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:46:11,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:46:11,589 INFO L87 Difference]: Start difference. First operand 1384 states and 2287 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:46:12,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:12,589 INFO L93 Difference]: Finished difference Result 4088 states and 6886 transitions. [2024-11-28 02:46:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:46:12,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-11-28 02:46:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:12,620 INFO L225 Difference]: With dead ends: 4088 [2024-11-28 02:46:12,620 INFO L226 Difference]: Without dead ends: 2722 [2024-11-28 02:46:12,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:46:12,631 INFO L435 NwaCegarLoop]: 995 mSDtfsCounter, 848 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:12,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 4559 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:46:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2024-11-28 02:46:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2675. [2024-11-28 02:46:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2065 states have (on average 1.664406779661017) internal successors, (3437), 2165 states have internal predecessors, (3437), 489 states have call successors, (489), 118 states have call predecessors, (489), 120 states have return successors, (577), 475 states have call predecessors, (577), 485 states have call successors, (577) [2024-11-28 02:46:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4503 transitions. [2024-11-28 02:46:12,850 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4503 transitions. Word has length 74 [2024-11-28 02:46:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:12,850 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4503 transitions. [2024-11-28 02:46:12,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:46:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4503 transitions. [2024-11-28 02:46:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 02:46:12,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:12,853 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:12,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:46:12,853 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:12,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:12,853 INFO L85 PathProgramCache]: Analyzing trace with hash -137942504, now seen corresponding path program 1 times [2024-11-28 02:46:12,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:12,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007576094] [2024-11-28 02:46:12,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:12,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:46:13,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007576094] [2024-11-28 02:46:13,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007576094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:46:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757803989] [2024-11-28 02:46:13,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:13,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:46:13,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:46:13,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:46:13,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:46:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:13,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:46:13,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:46:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:46:13,831 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:46:13,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757803989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:46:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-28 02:46:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293803363] [2024-11-28 02:46:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:13,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:46:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:13,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:46:13,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:46:13,835 INFO L87 Difference]: Start difference. First operand 2675 states and 4503 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:46:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:14,653 INFO L93 Difference]: Finished difference Result 7216 states and 12348 transitions. [2024-11-28 02:46:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:46:14,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-11-28 02:46:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:14,704 INFO L225 Difference]: With dead ends: 7216 [2024-11-28 02:46:14,704 INFO L226 Difference]: Without dead ends: 4559 [2024-11-28 02:46:14,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:46:14,727 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 725 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:14,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 3242 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:46:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2024-11-28 02:46:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4516. [2024-11-28 02:46:15,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3484 states have (on average 1.6165327210103329) internal successors, (5632), 3650 states have internal predecessors, (5632), 814 states have call successors, (814), 210 states have call predecessors, (814), 217 states have return successors, (1070), 795 states have call predecessors, (1070), 808 states have call successors, (1070) [2024-11-28 02:46:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 7516 transitions. [2024-11-28 02:46:15,097 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 7516 transitions. Word has length 75 [2024-11-28 02:46:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:15,098 INFO L471 AbstractCegarLoop]: Abstraction has 4516 states and 7516 transitions. [2024-11-28 02:46:15,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:46:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 7516 transitions. [2024-11-28 02:46:15,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 02:46:15,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:15,101 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:15,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:46:15,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:46:15,306 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:15,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:15,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1877714317, now seen corresponding path program 1 times [2024-11-28 02:46:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:15,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246445036] [2024-11-28 02:46:15,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:15,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:46:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246445036] [2024-11-28 02:46:15,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246445036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:15,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:15,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706806356] [2024-11-28 02:46:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:15,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:15,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:15,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:15,487 INFO L87 Difference]: Start difference. First operand 4516 states and 7516 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:46:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:15,875 INFO L93 Difference]: Finished difference Result 9038 states and 15197 transitions. [2024-11-28 02:46:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:46:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-11-28 02:46:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:15,925 INFO L225 Difference]: With dead ends: 9038 [2024-11-28 02:46:15,925 INFO L226 Difference]: Without dead ends: 4540 [2024-11-28 02:46:15,965 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 [2024-11-28 02:46:15,965 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 12 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:15,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2501 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2024-11-28 02:46:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 4524. [2024-11-28 02:46:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 3490 states have (on average 1.6148997134670486) internal successors, (5636), 3656 states have internal predecessors, (5636), 814 states have call successors, (814), 214 states have call predecessors, (814), 219 states have return successors, (1057), 793 states have call predecessors, (1057), 808 states have call successors, (1057) [2024-11-28 02:46:16,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 7507 transitions. [2024-11-28 02:46:16,347 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 7507 transitions. Word has length 75 [2024-11-28 02:46:16,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:16,350 INFO L471 AbstractCegarLoop]: Abstraction has 4524 states and 7507 transitions. [2024-11-28 02:46:16,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:46:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 7507 transitions. [2024-11-28 02:46:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:46:16,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:16,353 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:16,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:46:16,353 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:16,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash 646283321, now seen corresponding path program 1 times [2024-11-28 02:46:16,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:16,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468236607] [2024-11-28 02:46:16,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:16,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:46:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468236607] [2024-11-28 02:46:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468236607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:16,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:16,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:46:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854212794] [2024-11-28 02:46:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:16,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:46:16,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:16,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:46:16,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:46:16,594 INFO L87 Difference]: Start difference. First operand 4524 states and 7507 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:46:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:18,001 INFO L93 Difference]: Finished difference Result 13523 states and 23249 transitions. [2024-11-28 02:46:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:46:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2024-11-28 02:46:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:18,131 INFO L225 Difference]: With dead ends: 13523 [2024-11-28 02:46:18,131 INFO L226 Difference]: Without dead ends: 9017 [2024-11-28 02:46:18,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:46:18,163 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 846 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:18,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 4300 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:46:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2024-11-28 02:46:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 8948. [2024-11-28 02:46:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8948 states, 6910 states have (on average 1.612590448625181) internal successors, (11143), 7236 states have internal predecessors, (11143), 1600 states have call successors, (1600), 422 states have call predecessors, (1600), 437 states have return successors, (2521), 1569 states have call predecessors, (2521), 1590 states have call successors, (2521) [2024-11-28 02:46:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8948 states to 8948 states and 15264 transitions. [2024-11-28 02:46:18,908 INFO L78 Accepts]: Start accepts. Automaton has 8948 states and 15264 transitions. Word has length 83 [2024-11-28 02:46:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:18,909 INFO L471 AbstractCegarLoop]: Abstraction has 8948 states and 15264 transitions. [2024-11-28 02:46:18,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:46:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8948 states and 15264 transitions. [2024-11-28 02:46:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 02:46:18,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:18,913 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:46:18,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:46:18,913 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:18,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1450823584, now seen corresponding path program 1 times [2024-11-28 02:46:18,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:18,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225546343] [2024-11-28 02:46:18,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:18,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:46:19,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225546343] [2024-11-28 02:46:19,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225546343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:19,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635972711] [2024-11-28 02:46:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:19,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:19,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:19,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:19,131 INFO L87 Difference]: Start difference. First operand 8948 states and 15264 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:46:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:19,712 INFO L93 Difference]: Finished difference Result 17950 states and 31081 transitions. [2024-11-28 02:46:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:46:19,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-11-28 02:46:19,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:19,886 INFO L225 Difference]: With dead ends: 17950 [2024-11-28 02:46:19,886 INFO L226 Difference]: Without dead ends: 9020 [2024-11-28 02:46:19,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:46:19,929 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 12 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:19,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2495 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2024-11-28 02:46:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 8988. [2024-11-28 02:46:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 6946 states have (on average 1.6099913619349266) internal successors, (11183), 7264 states have internal predecessors, (11183), 1600 states have call successors, (1600), 438 states have call predecessors, (1600), 441 states have return successors, (2501), 1565 states have call predecessors, (2501), 1590 states have call successors, (2501) [2024-11-28 02:46:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 15284 transitions. [2024-11-28 02:46:20,566 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 15284 transitions. Word has length 84 [2024-11-28 02:46:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:20,567 INFO L471 AbstractCegarLoop]: Abstraction has 8988 states and 15284 transitions. [2024-11-28 02:46:20,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:46:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 15284 transitions. [2024-11-28 02:46:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:46:20,570 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:20,570 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 02:46:20,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:46:20,571 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:20,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash 496008913, now seen corresponding path program 1 times [2024-11-28 02:46:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:20,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654626460] [2024-11-28 02:46:20,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:46:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654626460] [2024-11-28 02:46:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654626460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:20,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:20,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:46:20,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207282365] [2024-11-28 02:46:20,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:20,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:46:20,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:20,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:46:20,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:46:20,878 INFO L87 Difference]: Start difference. First operand 8988 states and 15284 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:46:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:22,904 INFO L93 Difference]: Finished difference Result 26987 states and 48345 transitions. [2024-11-28 02:46:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:46:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-11-28 02:46:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:23,063 INFO L225 Difference]: With dead ends: 26987 [2024-11-28 02:46:23,063 INFO L226 Difference]: Without dead ends: 18017 [2024-11-28 02:46:23,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:46:23,122 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 841 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:23,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 4309 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:46:23,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18017 states. [2024-11-28 02:46:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18017 to 17916. [2024-11-28 02:46:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17916 states, 13852 states have (on average 1.6070603522956974) internal successors, (22261), 14482 states have internal predecessors, (22261), 3178 states have call successors, (3178), 870 states have call predecessors, (3178), 885 states have return successors, (6322), 3123 states have call predecessors, (6322), 3160 states have call successors, (6322) [2024-11-28 02:46:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17916 states to 17916 states and 31761 transitions. [2024-11-28 02:46:24,482 INFO L78 Accepts]: Start accepts. Automaton has 17916 states and 31761 transitions. Word has length 93 [2024-11-28 02:46:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:24,484 INFO L471 AbstractCegarLoop]: Abstraction has 17916 states and 31761 transitions. [2024-11-28 02:46:24,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:46:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 17916 states and 31761 transitions. [2024-11-28 02:46:24,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 02:46:24,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:24,487 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 02:46:24,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:46:24,488 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:24,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1667903248, now seen corresponding path program 1 times [2024-11-28 02:46:24,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:24,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055851312] [2024-11-28 02:46:24,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:24,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:46:24,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:24,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055851312] [2024-11-28 02:46:24,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055851312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:24,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:24,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603891270] [2024-11-28 02:46:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:24,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:24,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:24,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:24,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:24,627 INFO L87 Difference]: Start difference. First operand 17916 states and 31761 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:46:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:25,782 INFO L93 Difference]: Finished difference Result 35958 states and 65266 transitions. [2024-11-28 02:46:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:46:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2024-11-28 02:46:25,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:25,974 INFO L225 Difference]: With dead ends: 35958 [2024-11-28 02:46:25,974 INFO L226 Difference]: Without dead ends: 18060 [2024-11-28 02:46:26,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:46:26,110 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 11 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:26,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2498 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18060 states. [2024-11-28 02:46:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18060 to 17996. [2024-11-28 02:46:27,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17996 states, 13924 states have (on average 1.6044958345303073) internal successors, (22341), 14554 states have internal predecessors, (22341), 3178 states have call successors, (3178), 886 states have call predecessors, (3178), 893 states have return successors, (6294), 3115 states have call predecessors, (6294), 3160 states have call successors, (6294) [2024-11-28 02:46:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17996 states to 17996 states and 31813 transitions. [2024-11-28 02:46:28,118 INFO L78 Accepts]: Start accepts. Automaton has 17996 states and 31813 transitions. Word has length 94 [2024-11-28 02:46:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:28,119 INFO L471 AbstractCegarLoop]: Abstraction has 17996 states and 31813 transitions. [2024-11-28 02:46:28,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:46:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 17996 states and 31813 transitions. [2024-11-28 02:46:28,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:46:28,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:28,123 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2024-11-28 02:46:28,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:46:28,124 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:28,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1772331782, now seen corresponding path program 1 times [2024-11-28 02:46:28,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:28,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823730] [2024-11-28 02:46:28,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:28,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:46:28,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:28,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823730] [2024-11-28 02:46:28,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:28,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:28,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:46:28,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473229575] [2024-11-28 02:46:28,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:28,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:46:28,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:28,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:46:28,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:46:28,373 INFO L87 Difference]: Start difference. First operand 17996 states and 31813 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:46:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:31,130 INFO L93 Difference]: Finished difference Result 54131 states and 103424 transitions. [2024-11-28 02:46:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:46:31,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2024-11-28 02:46:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:31,599 INFO L225 Difference]: With dead ends: 54131 [2024-11-28 02:46:31,600 INFO L226 Difference]: Without dead ends: 36153 [2024-11-28 02:46:31,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:46:31,823 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 836 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:31,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 4277 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:46:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36153 states. [2024-11-28 02:46:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36153 to 35988. [2024-11-28 02:46:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35988 states, 27850 states have (on average 1.6021184919210054) internal successors, (44619), 29104 states have internal predecessors, (44619), 6340 states have call successors, (6340), 1766 states have call predecessors, (6340), 1797 states have return successors, (16763), 6237 states have call predecessors, (16763), 6306 states have call successors, (16763) [2024-11-28 02:46:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35988 states to 35988 states and 67722 transitions. [2024-11-28 02:46:35,145 INFO L78 Accepts]: Start accepts. Automaton has 35988 states and 67722 transitions. Word has length 104 [2024-11-28 02:46:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:35,145 INFO L471 AbstractCegarLoop]: Abstraction has 35988 states and 67722 transitions. [2024-11-28 02:46:35,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:46:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 35988 states and 67722 transitions. [2024-11-28 02:46:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:46:35,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:35,149 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:35,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:46:35,150 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:35,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:35,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1766505411, now seen corresponding path program 1 times [2024-11-28 02:46:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:35,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583391591] [2024-11-28 02:46:35,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:35,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:46:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583391591] [2024-11-28 02:46:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583391591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:35,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:35,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:46:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71901448] [2024-11-28 02:46:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:35,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:46:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:35,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:46:35,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:46:35,503 INFO L87 Difference]: Start difference. First operand 35988 states and 67722 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:46:38,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:38,389 INFO L93 Difference]: Finished difference Result 72278 states and 141091 transitions. [2024-11-28 02:46:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:46:38,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-11-28 02:46:38,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:38,841 INFO L225 Difference]: With dead ends: 72278 [2024-11-28 02:46:38,842 INFO L226 Difference]: Without dead ends: 36308 [2024-11-28 02:46:39,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:46:39,513 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 9 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:39,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2495 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:46:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36308 states. [2024-11-28 02:46:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36308 to 36180. [2024-11-28 02:46:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36180 states, 28026 states have (on average 1.598908156711625) internal successors, (44811), 29280 states have internal predecessors, (44811), 6340 states have call successors, (6340), 1798 states have call predecessors, (6340), 1813 states have return successors, (16731), 6221 states have call predecessors, (16731), 6306 states have call successors, (16731) [2024-11-28 02:46:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36180 states to 36180 states and 67882 transitions. [2024-11-28 02:46:42,248 INFO L78 Accepts]: Start accepts. Automaton has 36180 states and 67882 transitions. Word has length 105 [2024-11-28 02:46:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:42,250 INFO L471 AbstractCegarLoop]: Abstraction has 36180 states and 67882 transitions. [2024-11-28 02:46:42,251 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:46:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 36180 states and 67882 transitions. [2024-11-28 02:46:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:46:42,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:42,256 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:42,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:46:42,257 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:42,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1124852521, now seen corresponding path program 1 times [2024-11-28 02:46:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:42,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233576462] [2024-11-28 02:46:42,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 02:46:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233576462] [2024-11-28 02:46:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233576462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:46:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388169270] [2024-11-28 02:46:42,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:42,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:46:42,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:46:42,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:46:42,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:46:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:43,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:46:43,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:46:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-28 02:46:43,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:46:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388169270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:46:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-28 02:46:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26763040] [2024-11-28 02:46:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:43,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:46:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:43,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:46:43,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:46:43,755 INFO L87 Difference]: Start difference. First operand 36180 states and 67882 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-28 02:46:55,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:55,864 INFO L93 Difference]: Finished difference Result 129505 states and 264194 transitions. [2024-11-28 02:46:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:46:55,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 140 [2024-11-28 02:46:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:56,939 INFO L225 Difference]: With dead ends: 129505 [2024-11-28 02:46:56,939 INFO L226 Difference]: Without dead ends: 93343 [2024-11-28 02:46:57,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:46:57,465 INFO L435 NwaCegarLoop]: 635 mSDtfsCounter, 2949 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 6238 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 6876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 6238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:57,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3116 Valid, 2414 Invalid, 6876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [638 Valid, 6238 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-28 02:46:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93343 states. [2024-11-28 02:47:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93343 to 92070. [2024-11-28 02:47:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92070 states, 71400 states have (on average 1.5907422969187675) internal successors, (113579), 74438 states have internal predecessors, (113579), 15880 states have call successors, (15880), 4502 states have call predecessors, (15880), 4789 states have return successors, (52056), 15865 states have call predecessors, (52056), 15814 states have call successors, (52056) [2024-11-28 02:47:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92070 states to 92070 states and 181515 transitions. [2024-11-28 02:47:04,618 INFO L78 Accepts]: Start accepts. Automaton has 92070 states and 181515 transitions. Word has length 140 [2024-11-28 02:47:04,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:04,619 INFO L471 AbstractCegarLoop]: Abstraction has 92070 states and 181515 transitions. [2024-11-28 02:47:04,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-28 02:47:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 92070 states and 181515 transitions. [2024-11-28 02:47:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:47:04,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:04,622 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:04,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:47:04,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d7a09d-8f90-438b-af5e-a1b43abb9082/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:04,827 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:04,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 41487342, now seen corresponding path program 1 times [2024-11-28 02:47:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266424725] [2024-11-28 02:47:04,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-28 02:47:05,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266424725] [2024-11-28 02:47:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266424725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:05,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:05,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:47:05,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280741672] [2024-11-28 02:47:05,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:05,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:47:05,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:05,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:47:05,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:47:05,117 INFO L87 Difference]: Start difference. First operand 92070 states and 181515 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 02:47:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:11,680 INFO L93 Difference]: Finished difference Result 186678 states and 371418 transitions. [2024-11-28 02:47:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:47:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2024-11-28 02:47:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:12,540 INFO L225 Difference]: With dead ends: 186678 [2024-11-28 02:47:12,540 INFO L226 Difference]: Without dead ends: 94578 [2024-11-28 02:47:13,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:47:13,491 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 696 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:13,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 3468 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:47:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94578 states.