./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product09.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_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1 --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 e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:05:34,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:05:34,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 23:05:34,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:05:34,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:05:34,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:05:34,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:05:34,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:05:34,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:05:34,631 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:05:34,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:05:34,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:05:34,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:05:34,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:05:34,631 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:05:34,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:05:34,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:05:34,633 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:05:34,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:05:34,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:05:34,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:05:34,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:05:34,635 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_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1 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 -> e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 [2024-12-01 23:05:34,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:05:34,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:05:34,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:05:34,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:05:34,849 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:05:34,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2024-12-01 23:05:37,537 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/data/7b3fe4ebe/c465b62db03c453f9dc2f5fc0e9a68f3/FLAGd73b7d946 [2024-12-01 23:05:37,824 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:05:37,825 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2024-12-01 23:05:37,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/data/7b3fe4ebe/c465b62db03c453f9dc2f5fc0e9a68f3/FLAGd73b7d946 [2024-12-01 23:05:38,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/data/7b3fe4ebe/c465b62db03c453f9dc2f5fc0e9a68f3 [2024-12-01 23:05:38,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:05:38,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:05:38,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:05:38,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:05:38,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:05:38,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7566704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38, skipping insertion in model container [2024-12-01 23:05:38,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,155 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:05:38,300 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_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2024-12-01 23:05:38,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:05:38,590 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:05:38,599 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-12-01 23:05:38,601 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2024-12-01 23:05:38,601 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [423] [2024-12-01 23:05:38,601 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [461] [2024-12-01 23:05:38,601 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [822] [2024-12-01 23:05:38,602 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1005] [2024-12-01 23:05:38,602 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1097] [2024-12-01 23:05:38,602 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1768] [2024-12-01 23:05:38,602 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3206] [2024-12-01 23:05:38,602 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3219] [2024-12-01 23:05:38,605 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_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2024-12-01 23:05:38,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:05:38,714 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:05:38,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38 WrapperNode [2024-12-01 23:05:38,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:05:38,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:05:38,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:05:38,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:05:38,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,784 INFO L138 Inliner]: procedures = 89, calls = 331, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 799 [2024-12-01 23:05:38,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:05:38,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:05:38,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:05:38,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:05:38,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,822 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]. [2024-12-01 23:05:38,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,839 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:05:38,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:05:38,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:05:38,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:05:38,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (1/1) ... [2024-12-01 23:05:38,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:05:38,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:38,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:05:38,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:05:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-01 23:05:38,952 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-01 23:05:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:05:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-01 23:05:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-01 23:05:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-01 23:05:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-01 23:05:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-01 23:05:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-01 23:05:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-01 23:05:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-01 23:05:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-01 23:05:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-01 23:05:38,953 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-01 23:05:38,953 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-01 23:05:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-01 23:05:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-01 23:05:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-01 23:05:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-01 23:05:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-01 23:05:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-01 23:05:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-01 23:05:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-01 23:05:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-01 23:05:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-01 23:05:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-01 23:05:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-01 23:05:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-01 23:05:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-01 23:05:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-01 23:05:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-01 23:05:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-01 23:05:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-01 23:05:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-01 23:05:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-01 23:05:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-01 23:05:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-01 23:05:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-01 23:05:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-01 23:05:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:05:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:05:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-01 23:05:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-01 23:05:39,125 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:05:39,127 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:05:40,213 INFO L? ?]: Removed 421 outVars from TransFormulas that were not future-live. [2024-12-01 23:05:40,213 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:05:40,235 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:05:40,236 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 23:05:40,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:05:40 BoogieIcfgContainer [2024-12-01 23:05:40,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:05:40,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:05:40,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:05:40,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:05:40,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:05:38" (1/3) ... [2024-12-01 23:05:40,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f2f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:05:40, skipping insertion in model container [2024-12-01 23:05:40,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:05:38" (2/3) ... [2024-12-01 23:05:40,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f2f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:05:40, skipping insertion in model container [2024-12-01 23:05:40,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:05:40" (3/3) ... [2024-12-01 23:05:40,246 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2024-12-01 23:05:40,257 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:05:40,260 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product09.cil.c that has 22 procedures, 532 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 23:05:40,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:05:40,343 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;@73f3a38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:05:40,343 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 23:05:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 420 states have (on average 1.7142857142857142) internal successors, (720), 441 states have internal predecessors, (720), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-01 23:05:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-01 23:05:40,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:40,371 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:40,371 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:40,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2135315642, now seen corresponding path program 1 times [2024-12-01 23:05:40,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:40,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14455799] [2024-12-01 23:05:40,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:05:40,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14455799] [2024-12-01 23:05:40,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14455799] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:40,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058242880] [2024-12-01 23:05:40,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:40,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:40,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:40,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:05:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:41,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 23:05:41,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 23:05:41,438 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058242880] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:41,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:41,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-12-01 23:05:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85069025] [2024-12-01 23:05:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:41,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 23:05:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:41,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 23:05:41,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:05:41,468 INFO L87 Difference]: Start difference. First operand has 532 states, 420 states have (on average 1.7142857142857142) internal successors, (720), 441 states have internal predecessors, (720), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-01 23:05:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:41,527 INFO L93 Difference]: Finished difference Result 553 states and 928 transitions. [2024-12-01 23:05:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 23:05:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2024-12-01 23:05:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:41,544 INFO L225 Difference]: With dead ends: 553 [2024-12-01 23:05:41,544 INFO L226 Difference]: Without dead ends: 524 [2024-12-01 23:05:41,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:05:41,551 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:41,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-12-01 23:05:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-12-01 23:05:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 414 states have (on average 1.71256038647343) internal successors, (709), 433 states have internal predecessors, (709), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 882 transitions. [2024-12-01 23:05:41,625 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 882 transitions. Word has length 97 [2024-12-01 23:05:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:41,626 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 882 transitions. [2024-12-01 23:05:41,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-01 23:05:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 882 transitions. [2024-12-01 23:05:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-01 23:05:41,632 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:41,633 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:41,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:05:41,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:41,834 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:41,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash 817047330, now seen corresponding path program 1 times [2024-12-01 23:05:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920552543] [2024-12-01 23:05:41,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:41,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:05:42,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920552543] [2024-12-01 23:05:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920552543] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16676502] [2024-12-01 23:05:42,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:42,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:42,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:42,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:42,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 23:05:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:42,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:42,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:42,540 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16676502] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:42,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294234916] [2024-12-01 23:05:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:42,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:42,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:42,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:42,543 INFO L87 Difference]: Start difference. First operand 524 states and 882 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:42,636 INFO L93 Difference]: Finished difference Result 1039 states and 1756 transitions. [2024-12-01 23:05:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:05:42,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2024-12-01 23:05:42,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:42,642 INFO L225 Difference]: With dead ends: 1039 [2024-12-01 23:05:42,642 INFO L226 Difference]: Without dead ends: 524 [2024-12-01 23:05:42,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:42,647 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 5 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:42,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2604 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-12-01 23:05:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-12-01 23:05:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 414 states have (on average 1.710144927536232) internal successors, (708), 433 states have internal predecessors, (708), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 881 transitions. [2024-12-01 23:05:42,681 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 881 transitions. Word has length 98 [2024-12-01 23:05:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:42,681 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 881 transitions. [2024-12-01 23:05:42,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 881 transitions. [2024-12-01 23:05:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-01 23:05:42,685 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:42,685 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:42,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 23:05:42,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-01 23:05:42,886 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:42,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash -679615506, now seen corresponding path program 1 times [2024-12-01 23:05:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:42,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832455665] [2024-12-01 23:05:42,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:42,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:05:43,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832455665] [2024-12-01 23:05:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832455665] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981191616] [2024-12-01 23:05:43,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:43,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:43,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:43,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:43,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 23:05:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:43,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:43,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:43,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981191616] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:43,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274980294] [2024-12-01 23:05:43,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:43,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:43,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:43,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:43,438 INFO L87 Difference]: Start difference. First operand 524 states and 881 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, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:43,505 INFO L93 Difference]: Finished difference Result 1039 states and 1754 transitions. [2024-12-01 23:05:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:05:43,506 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, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2024-12-01 23:05:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:43,511 INFO L225 Difference]: With dead ends: 1039 [2024-12-01 23:05:43,511 INFO L226 Difference]: Without dead ends: 524 [2024-12-01 23:05:43,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:43,514 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 4 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:43,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2604 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-12-01 23:05:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-12-01 23:05:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 414 states have (on average 1.7077294685990339) internal successors, (707), 433 states have internal predecessors, (707), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 880 transitions. [2024-12-01 23:05:43,541 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 880 transitions. Word has length 100 [2024-12-01 23:05:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:43,541 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 880 transitions. [2024-12-01 23:05:43,541 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, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 880 transitions. [2024-12-01 23:05:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-01 23:05:43,545 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:43,545 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:43,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 23:05:43,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-01 23:05:43,746 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:43,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:43,746 INFO L85 PathProgramCache]: Analyzing trace with hash -969849118, now seen corresponding path program 1 times [2024-12-01 23:05:43,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:43,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729834933] [2024-12-01 23:05:43,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:43,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:05:43,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729834933] [2024-12-01 23:05:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729834933] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717694370] [2024-12-01 23:05:43,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:43,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:43,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:43,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:43,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 23:05:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:44,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:44,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:44,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717694370] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:44,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:44,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:44,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938406405] [2024-12-01 23:05:44,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:44,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:44,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:44,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:44,290 INFO L87 Difference]: Start difference. First operand 524 states and 880 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:44,366 INFO L93 Difference]: Finished difference Result 1046 states and 1761 transitions. [2024-12-01 23:05:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:05:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2024-12-01 23:05:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:44,371 INFO L225 Difference]: With dead ends: 1046 [2024-12-01 23:05:44,371 INFO L226 Difference]: Without dead ends: 533 [2024-12-01 23:05:44,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:44,375 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 13 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:44,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2601 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-12-01 23:05:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-12-01 23:05:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 422 states have (on average 1.7037914691943128) internal successors, (719), 441 states have internal predecessors, (719), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 892 transitions. [2024-12-01 23:05:44,400 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 892 transitions. Word has length 102 [2024-12-01 23:05:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:44,400 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 892 transitions. [2024-12-01 23:05:44,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 892 transitions. [2024-12-01 23:05:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-01 23:05:44,403 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:44,403 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:44,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 23:05:44,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:44,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:44,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2085959907, now seen corresponding path program 1 times [2024-12-01 23:05:44,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:44,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283743847] [2024-12-01 23:05:44,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:44,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:05:44,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:44,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283743847] [2024-12-01 23:05:44,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283743847] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:44,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252509675] [2024-12-01 23:05:44,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:44,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:44,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:44,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:44,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 23:05:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:45,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:45,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:45,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:45,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252509675] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:45,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256435619] [2024-12-01 23:05:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:45,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:45,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:45,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:45,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:45,123 INFO L87 Difference]: Start difference. First operand 533 states and 892 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:45,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:45,189 INFO L93 Difference]: Finished difference Result 1048 states and 1762 transitions. [2024-12-01 23:05:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:05:45,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2024-12-01 23:05:45,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:45,194 INFO L225 Difference]: With dead ends: 1048 [2024-12-01 23:05:45,194 INFO L226 Difference]: Without dead ends: 533 [2024-12-01 23:05:45,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:45,198 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 11 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:45,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2601 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-12-01 23:05:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-12-01 23:05:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 422 states have (on average 1.7014218009478672) internal successors, (718), 441 states have internal predecessors, (718), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 891 transitions. [2024-12-01 23:05:45,221 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 891 transitions. Word has length 103 [2024-12-01 23:05:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:45,222 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 891 transitions. [2024-12-01 23:05:45,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 891 transitions. [2024-12-01 23:05:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-01 23:05:45,224 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:45,225 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:45,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 23:05:45,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:45,425 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:45,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:45,425 INFO L85 PathProgramCache]: Analyzing trace with hash -20076098, now seen corresponding path program 1 times [2024-12-01 23:05:45,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:45,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510547589] [2024-12-01 23:05:45,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:45,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:05:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510547589] [2024-12-01 23:05:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510547589] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732349105] [2024-12-01 23:05:45,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:45,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:45,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 23:05:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:45,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:45,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:45,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732349105] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166134563] [2024-12-01 23:05:45,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:45,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:45,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:45,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:45,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:45,944 INFO L87 Difference]: Start difference. First operand 533 states and 891 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:46,007 INFO L93 Difference]: Finished difference Result 1048 states and 1761 transitions. [2024-12-01 23:05:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:05:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2024-12-01 23:05:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:46,012 INFO L225 Difference]: With dead ends: 1048 [2024-12-01 23:05:46,012 INFO L226 Difference]: Without dead ends: 533 [2024-12-01 23:05:46,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:46,015 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 10 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:46,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2601 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-12-01 23:05:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-12-01 23:05:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 422 states have (on average 1.6990521327014219) internal successors, (717), 441 states have internal predecessors, (717), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 890 transitions. [2024-12-01 23:05:46,034 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 890 transitions. Word has length 104 [2024-12-01 23:05:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:46,034 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 890 transitions. [2024-12-01 23:05:46,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 890 transitions. [2024-12-01 23:05:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-01 23:05:46,036 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:46,036 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:46,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 23:05:46,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:46,237 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:46,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1903392441, now seen corresponding path program 1 times [2024-12-01 23:05:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362026879] [2024-12-01 23:05:46,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:46,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362026879] [2024-12-01 23:05:46,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362026879] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:46,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863237031] [2024-12-01 23:05:46,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:46,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:46,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:46,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:46,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 23:05:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:46,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:46,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:46,793 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863237031] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:46,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-01 23:05:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179140866] [2024-12-01 23:05:46,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:46,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:46,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:46,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:46,795 INFO L87 Difference]: Start difference. First operand 533 states and 890 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:46,930 INFO L93 Difference]: Finished difference Result 1074 states and 1808 transitions. [2024-12-01 23:05:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:05:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-12-01 23:05:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:46,934 INFO L225 Difference]: With dead ends: 1074 [2024-12-01 23:05:46,934 INFO L226 Difference]: Without dead ends: 548 [2024-12-01 23:05:46,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:46,936 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 76 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:46,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2492 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-01 23:05:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 533. [2024-12-01 23:05:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 422 states have (on average 1.6872037914691944) internal successors, (712), 441 states have internal predecessors, (712), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 885 transitions. [2024-12-01 23:05:46,951 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 885 transitions. Word has length 105 [2024-12-01 23:05:46,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:46,951 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 885 transitions. [2024-12-01 23:05:46,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 885 transitions. [2024-12-01 23:05:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-01 23:05:46,953 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:46,953 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:46,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 23:05:47,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:47,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:47,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -368269927, now seen corresponding path program 1 times [2024-12-01 23:05:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:47,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011909058] [2024-12-01 23:05:47,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:47,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011909058] [2024-12-01 23:05:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011909058] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551657185] [2024-12-01 23:05:47,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:47,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:47,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:47,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:47,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 23:05:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:47,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:47,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:47,723 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:47,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551657185] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:47,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:47,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-01 23:05:47,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127606975] [2024-12-01 23:05:47,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:47,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:47,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:47,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:47,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:47,725 INFO L87 Difference]: Start difference. First operand 533 states and 885 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:47,841 INFO L93 Difference]: Finished difference Result 1074 states and 1798 transitions. [2024-12-01 23:05:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:05:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2024-12-01 23:05:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:47,846 INFO L225 Difference]: With dead ends: 1074 [2024-12-01 23:05:47,846 INFO L226 Difference]: Without dead ends: 548 [2024-12-01 23:05:47,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:47,849 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 75 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:47,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2492 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-01 23:05:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 533. [2024-12-01 23:05:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 422 states have (on average 1.6753554502369667) internal successors, (707), 441 states have internal predecessors, (707), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 880 transitions. [2024-12-01 23:05:47,870 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 880 transitions. Word has length 107 [2024-12-01 23:05:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:47,870 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 880 transitions. [2024-12-01 23:05:47,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 880 transitions. [2024-12-01 23:05:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-01 23:05:47,872 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:47,873 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:47,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 23:05:48,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:48,073 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:48,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash 82837145, now seen corresponding path program 1 times [2024-12-01 23:05:48,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:48,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588112877] [2024-12-01 23:05:48,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588112877] [2024-12-01 23:05:48,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588112877] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:48,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32702910] [2024-12-01 23:05:48,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:48,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:48,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:48,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 23:05:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:48,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:48,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:48,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:48,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32702910] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:48,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:48,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-01 23:05:48,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5443526] [2024-12-01 23:05:48,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:48,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:48,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:48,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:48,639 INFO L87 Difference]: Start difference. First operand 533 states and 880 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:48,803 INFO L93 Difference]: Finished difference Result 1125 states and 1871 transitions. [2024-12-01 23:05:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:05:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2024-12-01 23:05:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:48,807 INFO L225 Difference]: With dead ends: 1125 [2024-12-01 23:05:48,807 INFO L226 Difference]: Without dead ends: 614 [2024-12-01 23:05:48,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:05:48,809 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 130 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:48,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2523 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-12-01 23:05:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 584. [2024-12-01 23:05:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 472 states have (on average 1.6779661016949152) internal successors, (792), 491 states have internal predecessors, (792), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 965 transitions. [2024-12-01 23:05:48,826 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 965 transitions. Word has length 109 [2024-12-01 23:05:48,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:48,826 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 965 transitions. [2024-12-01 23:05:48,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 965 transitions. [2024-12-01 23:05:48,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-01 23:05:48,827 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:48,828 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:48,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 23:05:49,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:49,028 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:49,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:49,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1900018615, now seen corresponding path program 1 times [2024-12-01 23:05:49,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:49,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337281228] [2024-12-01 23:05:49,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:49,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337281228] [2024-12-01 23:05:49,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337281228] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:49,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243971577] [2024-12-01 23:05:49,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:49,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:49,169 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:49,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 23:05:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:49,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:49,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:49,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:49,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243971577] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:49,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:49,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-01 23:05:49,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175618763] [2024-12-01 23:05:49,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:49,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:49,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:49,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:49,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:49,535 INFO L87 Difference]: Start difference. First operand 584 states and 965 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:49,696 INFO L93 Difference]: Finished difference Result 1140 states and 1895 transitions. [2024-12-01 23:05:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:05:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2024-12-01 23:05:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:49,701 INFO L225 Difference]: With dead ends: 1140 [2024-12-01 23:05:49,701 INFO L226 Difference]: Without dead ends: 614 [2024-12-01 23:05:49,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:05:49,704 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 124 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:49,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2496 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-12-01 23:05:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 584. [2024-12-01 23:05:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 472 states have (on average 1.6673728813559323) internal successors, (787), 491 states have internal predecessors, (787), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-01 23:05:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 960 transitions. [2024-12-01 23:05:49,726 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 960 transitions. Word has length 110 [2024-12-01 23:05:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:49,726 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 960 transitions. [2024-12-01 23:05:49,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 960 transitions. [2024-12-01 23:05:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-01 23:05:49,729 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:49,729 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:49,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-01 23:05:49,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-01 23:05:49,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:49,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:49,930 INFO L85 PathProgramCache]: Analyzing trace with hash -816631464, now seen corresponding path program 1 times [2024-12-01 23:05:49,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:49,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229121059] [2024-12-01 23:05:49,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:49,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:50,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229121059] [2024-12-01 23:05:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229121059] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234282473] [2024-12-01 23:05:50,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:50,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:50,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:50,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 23:05:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:50,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 23:05:50,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:05:50,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:50,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234282473] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:50,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:50,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-01 23:05:50,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323042382] [2024-12-01 23:05:50,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:50,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:05:50,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:50,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:05:50,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-01 23:05:50,445 INFO L87 Difference]: Start difference. First operand 584 states and 960 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:50,567 INFO L93 Difference]: Finished difference Result 1133 states and 1875 transitions. [2024-12-01 23:05:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:05:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2024-12-01 23:05:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:50,572 INFO L225 Difference]: With dead ends: 1133 [2024-12-01 23:05:50,572 INFO L226 Difference]: Without dead ends: 622 [2024-12-01 23:05:50,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:05:50,575 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 113 mSDsluCounter, 5011 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5861 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:50,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5861 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-12-01 23:05:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 603. [2024-12-01 23:05:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 488 states have (on average 1.665983606557377) internal successors, (813), 509 states have internal predecessors, (813), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2024-12-01 23:05:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 990 transitions. [2024-12-01 23:05:50,598 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 990 transitions. Word has length 110 [2024-12-01 23:05:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:50,598 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 990 transitions. [2024-12-01 23:05:50,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:50,599 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 990 transitions. [2024-12-01 23:05:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-01 23:05:50,601 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:50,602 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:50,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 23:05:50,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-01 23:05:50,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:50,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:50,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1258385959, now seen corresponding path program 1 times [2024-12-01 23:05:50,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:50,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450128593] [2024-12-01 23:05:50,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:50,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450128593] [2024-12-01 23:05:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450128593] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208268916] [2024-12-01 23:05:50,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:50,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:50,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:50,879 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:50,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 23:05:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:51,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 23:05:51,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:51,282 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:51,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208268916] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:51,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-01 23:05:51,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484870738] [2024-12-01 23:05:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:51,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:51,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:51,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:51,283 INFO L87 Difference]: Start difference. First operand 603 states and 990 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:51,363 INFO L93 Difference]: Finished difference Result 1071 states and 1775 transitions. [2024-12-01 23:05:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:05:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2024-12-01 23:05:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:51,368 INFO L225 Difference]: With dead ends: 1071 [2024-12-01 23:05:51,368 INFO L226 Difference]: Without dead ends: 627 [2024-12-01 23:05:51,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:05:51,370 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 86 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5099 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:51,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5099 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-12-01 23:05:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 622. [2024-12-01 23:05:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 504 states have (on average 1.6646825396825398) internal successors, (839), 527 states have internal predecessors, (839), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-12-01 23:05:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1020 transitions. [2024-12-01 23:05:51,388 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1020 transitions. Word has length 110 [2024-12-01 23:05:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:51,388 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1020 transitions. [2024-12-01 23:05:51,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1020 transitions. [2024-12-01 23:05:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-01 23:05:51,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:51,390 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:51,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-01 23:05:51,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-01 23:05:51,591 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:51,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2038380244, now seen corresponding path program 1 times [2024-12-01 23:05:51,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:51,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718403549] [2024-12-01 23:05:51,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:05:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718403549] [2024-12-01 23:05:51,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718403549] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835945263] [2024-12-01 23:05:51,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:51,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:51,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:51,661 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:51,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-01 23:05:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:51,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 23:05:51,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:52,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835945263] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-01 23:05:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22826047] [2024-12-01 23:05:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:52,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:05:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:52,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:05:52,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:05:52,034 INFO L87 Difference]: Start difference. First operand 622 states and 1020 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:52,119 INFO L93 Difference]: Finished difference Result 1101 states and 1826 transitions. [2024-12-01 23:05:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:05:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2024-12-01 23:05:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:52,125 INFO L225 Difference]: With dead ends: 1101 [2024-12-01 23:05:52,125 INFO L226 Difference]: Without dead ends: 657 [2024-12-01 23:05:52,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:05:52,128 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 95 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5089 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:52,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5089 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-12-01 23:05:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 622. [2024-12-01 23:05:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 504 states have (on average 1.6646825396825398) internal successors, (839), 527 states have internal predecessors, (839), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-12-01 23:05:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1020 transitions. [2024-12-01 23:05:52,158 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1020 transitions. Word has length 111 [2024-12-01 23:05:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:52,158 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1020 transitions. [2024-12-01 23:05:52,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1020 transitions. [2024-12-01 23:05:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-01 23:05:52,162 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:52,162 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:52,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-01 23:05:52,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-01 23:05:52,362 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:52,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1163928404, now seen corresponding path program 1 times [2024-12-01 23:05:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:52,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976025392] [2024-12-01 23:05:52,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 23:05:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976025392] [2024-12-01 23:05:52,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976025392] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234280632] [2024-12-01 23:05:52,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:52,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:52,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:52,473 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:52,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-01 23:05:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:52,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 23:05:52,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:52,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234280632] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:52,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-01 23:05:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428779822] [2024-12-01 23:05:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:52,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:05:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:52,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:05:52,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:05:52,799 INFO L87 Difference]: Start difference. First operand 622 states and 1020 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:52,928 INFO L93 Difference]: Finished difference Result 1086 states and 1800 transitions. [2024-12-01 23:05:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:05:52,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2024-12-01 23:05:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:52,932 INFO L225 Difference]: With dead ends: 1086 [2024-12-01 23:05:52,933 INFO L226 Difference]: Without dead ends: 642 [2024-12-01 23:05:52,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:05:52,935 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 113 mSDsluCounter, 5017 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5869 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:52,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5869 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:52,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-12-01 23:05:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 622. [2024-12-01 23:05:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 504 states have (on average 1.6646825396825398) internal successors, (839), 527 states have internal predecessors, (839), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-12-01 23:05:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1020 transitions. [2024-12-01 23:05:52,957 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1020 transitions. Word has length 111 [2024-12-01 23:05:52,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:52,957 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1020 transitions. [2024-12-01 23:05:52,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:52,958 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1020 transitions. [2024-12-01 23:05:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-01 23:05:52,960 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:52,960 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:52,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-01 23:05:53,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-01 23:05:53,161 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:53,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash -287817200, now seen corresponding path program 1 times [2024-12-01 23:05:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096932258] [2024-12-01 23:05:53,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:53,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096932258] [2024-12-01 23:05:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096932258] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362459513] [2024-12-01 23:05:53,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:53,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:53,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:53,234 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:53,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-01 23:05:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:53,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:05:53,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:05:53,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362459513] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:53,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:53,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115588977] [2024-12-01 23:05:53,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:53,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:53,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:53,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:53,540 INFO L87 Difference]: Start difference. First operand 622 states and 1020 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:53,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:53,581 INFO L93 Difference]: Finished difference Result 1138 states and 1885 transitions. [2024-12-01 23:05:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:05:53,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2024-12-01 23:05:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:53,585 INFO L225 Difference]: With dead ends: 1138 [2024-12-01 23:05:53,585 INFO L226 Difference]: Without dead ends: 622 [2024-12-01 23:05:53,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:53,587 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 13 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:53,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2570 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-12-01 23:05:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2024-12-01 23:05:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 504 states have (on average 1.6567460317460319) internal successors, (835), 527 states have internal predecessors, (835), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-12-01 23:05:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1016 transitions. [2024-12-01 23:05:53,602 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1016 transitions. Word has length 111 [2024-12-01 23:05:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:53,602 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1016 transitions. [2024-12-01 23:05:53,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1016 transitions. [2024-12-01 23:05:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-01 23:05:53,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:53,604 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:53,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-01 23:05:53,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-01 23:05:53,805 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:53,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash 326668321, now seen corresponding path program 1 times [2024-12-01 23:05:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:53,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734961273] [2024-12-01 23:05:53,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 23:05:53,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734961273] [2024-12-01 23:05:53,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734961273] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805243527] [2024-12-01 23:05:53,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:53,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:53,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:53,866 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:53,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-01 23:05:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:54,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 23:05:54,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:05:54,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:54,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805243527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:54,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:54,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-01 23:05:54,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018360037] [2024-12-01 23:05:54,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:54,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:05:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:54,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:05:54,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:05:54,241 INFO L87 Difference]: Start difference. First operand 622 states and 1016 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:54,358 INFO L93 Difference]: Finished difference Result 1086 states and 1797 transitions. [2024-12-01 23:05:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:05:54,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-12-01 23:05:54,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:54,362 INFO L225 Difference]: With dead ends: 1086 [2024-12-01 23:05:54,362 INFO L226 Difference]: Without dead ends: 642 [2024-12-01 23:05:54,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:05:54,364 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 121 mSDsluCounter, 4979 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 5825 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:54,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 5825 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:05:54,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-12-01 23:05:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 622. [2024-12-01 23:05:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 504 states have (on average 1.6567460317460319) internal successors, (835), 527 states have internal predecessors, (835), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-12-01 23:05:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1016 transitions. [2024-12-01 23:05:54,379 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1016 transitions. Word has length 112 [2024-12-01 23:05:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:54,380 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1016 transitions. [2024-12-01 23:05:54,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:05:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1016 transitions. [2024-12-01 23:05:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-01 23:05:54,382 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:54,382 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:54,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-01 23:05:54,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-01 23:05:54,582 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:54,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1480574055, now seen corresponding path program 1 times [2024-12-01 23:05:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:54,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845591950] [2024-12-01 23:05:54,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 23:05:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:54,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845591950] [2024-12-01 23:05:54,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845591950] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:54,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116402646] [2024-12-01 23:05:54,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:54,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:54,669 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:54,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-01 23:05:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:54,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:05:54,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:05:54,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116402646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:54,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:54,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:54,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633458642] [2024-12-01 23:05:54,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:54,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:54,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:54,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:54,969 INFO L87 Difference]: Start difference. First operand 622 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:55,018 INFO L93 Difference]: Finished difference Result 1182 states and 1953 transitions. [2024-12-01 23:05:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:05:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2024-12-01 23:05:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:55,023 INFO L225 Difference]: With dead ends: 1182 [2024-12-01 23:05:55,023 INFO L226 Difference]: Without dead ends: 646 [2024-12-01 23:05:55,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:55,026 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 6 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:55,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2543 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-12-01 23:05:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2024-12-01 23:05:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 528 states have (on average 1.634469696969697) internal successors, (863), 551 states have internal predecessors, (863), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-12-01 23:05:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1044 transitions. [2024-12-01 23:05:55,046 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1044 transitions. Word has length 113 [2024-12-01 23:05:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:55,047 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 1044 transitions. [2024-12-01 23:05:55,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1044 transitions. [2024-12-01 23:05:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-01 23:05:55,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:55,049 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:55,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-01 23:05:55,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-01 23:05:55,250 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:55,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1173873269, now seen corresponding path program 1 times [2024-12-01 23:05:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:55,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999287248] [2024-12-01 23:05:55,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:55,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:55,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999287248] [2024-12-01 23:05:55,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999287248] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73698002] [2024-12-01 23:05:55,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:55,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:55,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:55,351 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:55,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-01 23:05:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:55,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:05:55,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 23:05:55,667 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:55,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73698002] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:55,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:55,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:05:55,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703834747] [2024-12-01 23:05:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:55,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:05:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:55,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:05:55,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:55,668 INFO L87 Difference]: Start difference. First operand 646 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:55,694 INFO L93 Difference]: Finished difference Result 1087 states and 1792 transitions. [2024-12-01 23:05:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:05:55,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2024-12-01 23:05:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:55,699 INFO L225 Difference]: With dead ends: 1087 [2024-12-01 23:05:55,699 INFO L226 Difference]: Without dead ends: 648 [2024-12-01 23:05:55,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:05:55,701 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 0 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:55,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2592 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:05:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-12-01 23:05:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2024-12-01 23:05:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 530 states have (on average 1.6320754716981132) internal successors, (865), 553 states have internal predecessors, (865), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-12-01 23:05:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1046 transitions. [2024-12-01 23:05:55,721 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1046 transitions. Word has length 113 [2024-12-01 23:05:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:55,722 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 1046 transitions. [2024-12-01 23:05:55,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:05:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1046 transitions. [2024-12-01 23:05:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-01 23:05:55,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:55,724 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:55,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-12-01 23:05:55,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-01 23:05:55,925 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:55,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:55,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1154923982, now seen corresponding path program 1 times [2024-12-01 23:05:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:55,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706034493] [2024-12-01 23:05:55,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:56,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706034493] [2024-12-01 23:05:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706034493] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314443489] [2024-12-01 23:05:56,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:56,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:56,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:56,018 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:56,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-01 23:05:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:56,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 23:05:56,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:05:56,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:56,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314443489] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:56,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:56,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2024-12-01 23:05:56,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869717328] [2024-12-01 23:05:56,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:56,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 23:05:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:56,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 23:05:56,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:05:56,418 INFO L87 Difference]: Start difference. First operand 648 states and 1046 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-01 23:05:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:05:59,187 INFO L93 Difference]: Finished difference Result 1769 states and 2952 transitions. [2024-12-01 23:05:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 23:05:59,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 116 [2024-12-01 23:05:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:05:59,194 INFO L225 Difference]: With dead ends: 1769 [2024-12-01 23:05:59,194 INFO L226 Difference]: Without dead ends: 1328 [2024-12-01 23:05:59,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-12-01 23:05:59,195 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 2833 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 5250 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2955 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 5838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 5250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:05:59,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2955 Valid, 4163 Invalid, 5838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 5250 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-01 23:05:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2024-12-01 23:05:59,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1309. [2024-12-01 23:05:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1039 states have (on average 1.6361886429258903) internal successors, (1700), 1086 states have internal predecessors, (1700), 214 states have call successors, (214), 42 states have call predecessors, (214), 55 states have return successors, (247), 211 states have call predecessors, (247), 209 states have call successors, (247) [2024-12-01 23:05:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2161 transitions. [2024-12-01 23:05:59,244 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2161 transitions. Word has length 116 [2024-12-01 23:05:59,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:05:59,245 INFO L471 AbstractCegarLoop]: Abstraction has 1309 states and 2161 transitions. [2024-12-01 23:05:59,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-12-01 23:05:59,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2161 transitions. [2024-12-01 23:05:59,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-01 23:05:59,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:05:59,248 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:05:59,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-01 23:05:59,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:59,449 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:05:59,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:05:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash 294972091, now seen corresponding path program 1 times [2024-12-01 23:05:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:05:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226898927] [2024-12-01 23:05:59,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:05:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:05:59,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:05:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226898927] [2024-12-01 23:05:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226898927] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:05:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285890096] [2024-12-01 23:05:59,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:05:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:05:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:05:59,533 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:05:59,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-01 23:05:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:05:59,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:05:59,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:05:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 23:05:59,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:05:59,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285890096] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:05:59,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:05:59,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-12-01 23:05:59,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969655889] [2024-12-01 23:05:59,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:05:59,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:05:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:05:59,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:05:59,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:05:59,855 INFO L87 Difference]: Start difference. First operand 1309 states and 2161 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:06:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:00,151 INFO L93 Difference]: Finished difference Result 3242 states and 5495 transitions. [2024-12-01 23:06:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-01 23:06:00,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 117 [2024-12-01 23:06:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:00,166 INFO L225 Difference]: With dead ends: 3242 [2024-12-01 23:06:00,166 INFO L226 Difference]: Without dead ends: 2252 [2024-12-01 23:06:00,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:06:00,172 INFO L435 NwaCegarLoop]: 1340 mSDtfsCounter, 708 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 4700 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:00,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 4700 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:06:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2024-12-01 23:06:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2233. [2024-12-01 23:06:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 1745 states have (on average 1.6458452722063037) internal successors, (2872), 1826 states have internal predecessors, (2872), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2024-12-01 23:06:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 3729 transitions. [2024-12-01 23:06:00,262 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 3729 transitions. Word has length 117 [2024-12-01 23:06:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:00,262 INFO L471 AbstractCegarLoop]: Abstraction has 2233 states and 3729 transitions. [2024-12-01 23:06:00,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:06:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 3729 transitions. [2024-12-01 23:06:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-01 23:06:00,268 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:00,269 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:00,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-01 23:06:00,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:00,469 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:00,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash -805828900, now seen corresponding path program 1 times [2024-12-01 23:06:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372237705] [2024-12-01 23:06:00,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:06:00,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:00,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372237705] [2024-12-01 23:06:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372237705] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:00,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28596711] [2024-12-01 23:06:00,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:00,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:00,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:00,572 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:00,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-01 23:06:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:00,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:06:00,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:06:00,842 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28596711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:00,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-01 23:06:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625064992] [2024-12-01 23:06:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:00,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:00,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:00,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:06:00,843 INFO L87 Difference]: Start difference. First operand 2233 states and 3729 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:06:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:00,919 INFO L93 Difference]: Finished difference Result 4304 states and 7239 transitions. [2024-12-01 23:06:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:06:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 119 [2024-12-01 23:06:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:00,935 INFO L225 Difference]: With dead ends: 4304 [2024-12-01 23:06:00,935 INFO L226 Difference]: Without dead ends: 2269 [2024-12-01 23:06:00,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:06:00,945 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 5 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:00,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2542 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2024-12-01 23:06:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2251. [2024-12-01 23:06:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1763 states have (on average 1.6460578559273964) internal successors, (2902), 1844 states have internal predecessors, (2902), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2024-12-01 23:06:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3759 transitions. [2024-12-01 23:06:01,048 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3759 transitions. Word has length 119 [2024-12-01 23:06:01,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:01,048 INFO L471 AbstractCegarLoop]: Abstraction has 2251 states and 3759 transitions. [2024-12-01 23:06:01,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-01 23:06:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3759 transitions. [2024-12-01 23:06:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-01 23:06:01,055 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:01,055 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:01,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-01 23:06:01,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:01,255 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:01,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash 592628312, now seen corresponding path program 1 times [2024-12-01 23:06:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:01,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203199171] [2024-12-01 23:06:01,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:06:01,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203199171] [2024-12-01 23:06:01,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203199171] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131079655] [2024-12-01 23:06:01,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:01,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:01,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:01,358 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:01,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-01 23:06:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:01,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-01 23:06:01,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:06:01,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:01,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131079655] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:01,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:01,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-01 23:06:01,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196309371] [2024-12-01 23:06:01,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:01,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:06:01,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:01,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:06:01,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-01 23:06:01,692 INFO L87 Difference]: Start difference. First operand 2251 states and 3759 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:06:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:01,846 INFO L93 Difference]: Finished difference Result 4246 states and 7134 transitions. [2024-12-01 23:06:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:06:01,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2024-12-01 23:06:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:01,860 INFO L225 Difference]: With dead ends: 4246 [2024-12-01 23:06:01,860 INFO L226 Difference]: Without dead ends: 2321 [2024-12-01 23:06:01,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:06:01,869 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 89 mSDsluCounter, 5000 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5846 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:01,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5846 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:06:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2024-12-01 23:06:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2254. [2024-12-01 23:06:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1765 states have (on average 1.6447592067988668) internal successors, (2903), 1847 states have internal predecessors, (2903), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-12-01 23:06:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3761 transitions. [2024-12-01 23:06:01,943 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3761 transitions. Word has length 120 [2024-12-01 23:06:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:01,943 INFO L471 AbstractCegarLoop]: Abstraction has 2254 states and 3761 transitions. [2024-12-01 23:06:01,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-01 23:06:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3761 transitions. [2024-12-01 23:06:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-01 23:06:01,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:01,949 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:01,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-01 23:06:02,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:02,149 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:02,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash -446026986, now seen corresponding path program 1 times [2024-12-01 23:06:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:02,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433159046] [2024-12-01 23:06:02,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:06:02,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433159046] [2024-12-01 23:06:02,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433159046] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866182889] [2024-12-01 23:06:02,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:02,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:02,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:02,253 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:02,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-01 23:06:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:02,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:06:02,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:06:02,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866182889] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:02,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:02,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-12-01 23:06:02,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075384717] [2024-12-01 23:06:02,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:02,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:06:02,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:02,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:06:02,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:06:02,608 INFO L87 Difference]: Start difference. First operand 2254 states and 3761 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-01 23:06:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:02,952 INFO L93 Difference]: Finished difference Result 2461 states and 4109 transitions. [2024-12-01 23:06:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 120 [2024-12-01 23:06:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:02,966 INFO L225 Difference]: With dead ends: 2461 [2024-12-01 23:06:02,966 INFO L226 Difference]: Without dead ends: 2444 [2024-12-01 23:06:02,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:06:02,968 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 850 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:02,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1580 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:06:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2024-12-01 23:06:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2266. [2024-12-01 23:06:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 1777 states have (on average 1.6404051772650534) internal successors, (2915), 1859 states have internal predecessors, (2915), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-12-01 23:06:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 3773 transitions. [2024-12-01 23:06:03,033 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 3773 transitions. Word has length 120 [2024-12-01 23:06:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:03,033 INFO L471 AbstractCegarLoop]: Abstraction has 2266 states and 3773 transitions. [2024-12-01 23:06:03,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-01 23:06:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 3773 transitions. [2024-12-01 23:06:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-01 23:06:03,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:03,040 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:03,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-01 23:06:03,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:03,240 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:03,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:03,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1815329841, now seen corresponding path program 1 times [2024-12-01 23:06:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100485802] [2024-12-01 23:06:03,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:06:03,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:03,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100485802] [2024-12-01 23:06:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100485802] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:03,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980899308] [2024-12-01 23:06:03,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:03,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:03,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:03,358 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:03,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-01 23:06:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:03,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:06:03,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:06:03,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:03,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980899308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:03,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:03,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-12-01 23:06:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411519868] [2024-12-01 23:06:03,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:03,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:06:03,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:03,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:06:03,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:06:03,645 INFO L87 Difference]: Start difference. First operand 2266 states and 3773 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-01 23:06:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:03,685 INFO L93 Difference]: Finished difference Result 2283 states and 3793 transitions. [2024-12-01 23:06:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 126 [2024-12-01 23:06:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:03,697 INFO L225 Difference]: With dead ends: 2283 [2024-12-01 23:06:03,697 INFO L226 Difference]: Without dead ends: 2266 [2024-12-01 23:06:03,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:06:03,700 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 0 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:03,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3456 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2024-12-01 23:06:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2266. [2024-12-01 23:06:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 1777 states have (on average 1.6370287000562747) internal successors, (2909), 1859 states have internal predecessors, (2909), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-12-01 23:06:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 3767 transitions. [2024-12-01 23:06:03,793 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 3767 transitions. Word has length 126 [2024-12-01 23:06:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:03,793 INFO L471 AbstractCegarLoop]: Abstraction has 2266 states and 3767 transitions. [2024-12-01 23:06:03,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-12-01 23:06:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 3767 transitions. [2024-12-01 23:06:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-01 23:06:03,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:03,802 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:03,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-01 23:06:04,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:04,003 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:04,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash 552244101, now seen corresponding path program 1 times [2024-12-01 23:06:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:04,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470640540] [2024-12-01 23:06:04,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:06:04,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:04,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470640540] [2024-12-01 23:06:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470640540] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:04,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119540410] [2024-12-01 23:06:04,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:04,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:04,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:04,191 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:04,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-01 23:06:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:04,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 23:06:04,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 23:06:04,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:04,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119540410] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:04,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:04,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-01 23:06:04,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691794728] [2024-12-01 23:06:04,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:04,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:06:04,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:04,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:06:04,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:06:04,566 INFO L87 Difference]: Start difference. First operand 2266 states and 3767 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-01 23:06:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:04,705 INFO L93 Difference]: Finished difference Result 4387 states and 7327 transitions. [2024-12-01 23:06:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:06:04,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 137 [2024-12-01 23:06:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:04,721 INFO L225 Difference]: With dead ends: 4387 [2024-12-01 23:06:04,721 INFO L226 Difference]: Without dead ends: 2346 [2024-12-01 23:06:04,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:06:04,729 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 119 mSDsluCounter, 4178 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5034 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:04,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5034 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2024-12-01 23:06:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2266. [2024-12-01 23:06:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 1777 states have (on average 1.6370287000562747) internal successors, (2909), 1859 states have internal predecessors, (2909), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-12-01 23:06:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 3767 transitions. [2024-12-01 23:06:04,819 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 3767 transitions. Word has length 137 [2024-12-01 23:06:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:04,819 INFO L471 AbstractCegarLoop]: Abstraction has 2266 states and 3767 transitions. [2024-12-01 23:06:04,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-01 23:06:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 3767 transitions. [2024-12-01 23:06:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-01 23:06:04,827 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:04,828 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:04,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-01 23:06:05,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-01 23:06:05,028 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:05,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1130969380, now seen corresponding path program 1 times [2024-12-01 23:06:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:05,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264030804] [2024-12-01 23:06:05,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 23:06:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264030804] [2024-12-01 23:06:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264030804] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020957385] [2024-12-01 23:06:05,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:05,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:05,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:05,132 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:05,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-01 23:06:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:05,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:06:05,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:06:05,474 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020957385] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:05,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-01 23:06:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793785123] [2024-12-01 23:06:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:05,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:05,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:05,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:06:05,476 INFO L87 Difference]: Start difference. First operand 2266 states and 3767 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-01 23:06:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:05,573 INFO L93 Difference]: Finished difference Result 4394 states and 7336 transitions. [2024-12-01 23:06:05,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:05,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2024-12-01 23:06:05,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:05,588 INFO L225 Difference]: With dead ends: 4394 [2024-12-01 23:06:05,588 INFO L226 Difference]: Without dead ends: 2096 [2024-12-01 23:06:05,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:06:05,597 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 7 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:05,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2570 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2024-12-01 23:06:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2096. [2024-12-01 23:06:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1622 states have (on average 1.6448828606658445) internal successors, (2668), 1698 states have internal predecessors, (2668), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-12-01 23:06:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3507 transitions. [2024-12-01 23:06:05,684 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3507 transitions. Word has length 137 [2024-12-01 23:06:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:05,684 INFO L471 AbstractCegarLoop]: Abstraction has 2096 states and 3507 transitions. [2024-12-01 23:06:05,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-01 23:06:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3507 transitions. [2024-12-01 23:06:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-01 23:06:05,692 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:05,692 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:05,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-01 23:06:05,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:05,893 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:05,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1130240096, now seen corresponding path program 1 times [2024-12-01 23:06:05,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:05,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340687277] [2024-12-01 23:06:05,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:05,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-01 23:06:05,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:05,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340687277] [2024-12-01 23:06:05,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340687277] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:05,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706630298] [2024-12-01 23:06:05,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:05,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:05,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:05,992 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:05,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-01 23:06:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:06,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:06:06,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 23:06:06,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706630298] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:06,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:06,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-01 23:06:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895260544] [2024-12-01 23:06:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:06,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:06,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:06,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:06,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:06:06,343 INFO L87 Difference]: Start difference. First operand 2096 states and 3507 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-01 23:06:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:06,468 INFO L93 Difference]: Finished difference Result 4194 states and 7027 transitions. [2024-12-01 23:06:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:06,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 139 [2024-12-01 23:06:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:06,479 INFO L225 Difference]: With dead ends: 4194 [2024-12-01 23:06:06,479 INFO L226 Difference]: Without dead ends: 2129 [2024-12-01 23:06:06,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:06:06,485 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 128 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:06,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2449 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:06:06,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2024-12-01 23:06:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2096. [2024-12-01 23:06:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1622 states have (on average 1.6442663378545006) internal successors, (2667), 1698 states have internal predecessors, (2667), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-12-01 23:06:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3506 transitions. [2024-12-01 23:06:06,542 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3506 transitions. Word has length 139 [2024-12-01 23:06:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:06,542 INFO L471 AbstractCegarLoop]: Abstraction has 2096 states and 3506 transitions. [2024-12-01 23:06:06,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-01 23:06:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3506 transitions. [2024-12-01 23:06:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-01 23:06:06,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:06,548 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:06,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-01 23:06:06,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-01 23:06:06,749 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:06,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash -11401764, now seen corresponding path program 1 times [2024-12-01 23:06:06,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:06,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514956916] [2024-12-01 23:06:06,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:06,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:06:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514956916] [2024-12-01 23:06:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514956916] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:06,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:06,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:06:06,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086474745] [2024-12-01 23:06:06,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:06,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:06:06,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:06,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:06:06,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:06:06,951 INFO L87 Difference]: Start difference. First operand 2096 states and 3506 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-01 23:06:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:07,058 INFO L93 Difference]: Finished difference Result 2981 states and 4983 transitions. [2024-12-01 23:06:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:06:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 140 [2024-12-01 23:06:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:07,079 INFO L225 Difference]: With dead ends: 2981 [2024-12-01 23:06:07,080 INFO L226 Difference]: Without dead ends: 2131 [2024-12-01 23:06:07,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:06:07,082 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 115 mSDsluCounter, 4173 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:07,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5028 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2024-12-01 23:06:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2096. [2024-12-01 23:06:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1622 states have (on average 1.6442663378545006) internal successors, (2667), 1698 states have internal predecessors, (2667), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-12-01 23:06:07,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3506 transitions. [2024-12-01 23:06:07,171 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3506 transitions. Word has length 140 [2024-12-01 23:06:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:07,172 INFO L471 AbstractCegarLoop]: Abstraction has 2096 states and 3506 transitions. [2024-12-01 23:06:07,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-01 23:06:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3506 transitions. [2024-12-01 23:06:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-01 23:06:07,176 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:07,176 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:07,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-01 23:06:07,176 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:07,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash -661429159, now seen corresponding path program 1 times [2024-12-01 23:06:07,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:07,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958090413] [2024-12-01 23:06:07,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:07,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:06:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958090413] [2024-12-01 23:06:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958090413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:06:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724022559] [2024-12-01 23:06:07,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:07,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:07,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:07,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:06:07,301 INFO L87 Difference]: Start difference. First operand 2096 states and 3506 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-01 23:06:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:07,378 INFO L93 Difference]: Finished difference Result 3030 states and 5065 transitions. [2024-12-01 23:06:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2024-12-01 23:06:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:07,386 INFO L225 Difference]: With dead ends: 3030 [2024-12-01 23:06:07,386 INFO L226 Difference]: Without dead ends: 949 [2024-12-01 23:06:07,394 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 [2024-12-01 23:06:07,394 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 8 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:07,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2567 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:07,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2024-12-01 23:06:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2024-12-01 23:06:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 751 states have (on average 1.636484687083888) internal successors, (1229), 784 states have internal predecessors, (1229), 158 states have call successors, (158), 40 states have call predecessors, (158), 39 states have return successors, (162), 150 states have call predecessors, (162), 153 states have call successors, (162) [2024-12-01 23:06:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1549 transitions. [2024-12-01 23:06:07,435 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1549 transitions. Word has length 140 [2024-12-01 23:06:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:07,435 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1549 transitions. [2024-12-01 23:06:07,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-01 23:06:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1549 transitions. [2024-12-01 23:06:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-01 23:06:07,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:07,438 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:07,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-01 23:06:07,439 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:07,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash 493102017, now seen corresponding path program 1 times [2024-12-01 23:06:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:07,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265589665] [2024-12-01 23:06:07,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-01 23:06:07,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:07,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265589665] [2024-12-01 23:06:07,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265589665] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:07,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:07,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:06:07,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986517886] [2024-12-01 23:06:07,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:07,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:06:07,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:07,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:06:07,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:06:07,640 INFO L87 Difference]: Start difference. First operand 949 states and 1549 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-01 23:06:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:09,651 INFO L93 Difference]: Finished difference Result 3106 states and 5212 transitions. [2024-12-01 23:06:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-01 23:06:09,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 141 [2024-12-01 23:06:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:09,662 INFO L225 Difference]: With dead ends: 3106 [2024-12-01 23:06:09,662 INFO L226 Difference]: Without dead ends: 2261 [2024-12-01 23:06:09,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-12-01 23:06:09,666 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 2306 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:09,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 1915 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-01 23:06:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-12-01 23:06:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2116. [2024-12-01 23:06:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1674 states have (on average 1.6612903225806452) internal successors, (2781), 1746 states have internal predecessors, (2781), 350 states have call successors, (350), 82 states have call predecessors, (350), 91 states have return successors, (392), 337 states have call predecessors, (392), 345 states have call successors, (392) [2024-12-01 23:06:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3523 transitions. [2024-12-01 23:06:09,761 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3523 transitions. Word has length 141 [2024-12-01 23:06:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:09,761 INFO L471 AbstractCegarLoop]: Abstraction has 2116 states and 3523 transitions. [2024-12-01 23:06:09,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-01 23:06:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3523 transitions. [2024-12-01 23:06:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-01 23:06:09,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:09,765 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:09,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-01 23:06:09,765 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:09,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash -93294397, now seen corresponding path program 1 times [2024-12-01 23:06:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:09,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675212782] [2024-12-01 23:06:09,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-01 23:06:09,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:09,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675212782] [2024-12-01 23:06:09,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675212782] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:09,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:09,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:06:09,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999928676] [2024-12-01 23:06:09,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:09,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:06:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:09,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:06:09,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:06:09,891 INFO L87 Difference]: Start difference. First operand 2116 states and 3523 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 23:06:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:09,983 INFO L93 Difference]: Finished difference Result 4153 states and 6973 transitions. [2024-12-01 23:06:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:09,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 146 [2024-12-01 23:06:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:09,993 INFO L225 Difference]: With dead ends: 4153 [2024-12-01 23:06:09,993 INFO L226 Difference]: Without dead ends: 2141 [2024-12-01 23:06:09,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:06:09,998 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 0 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:09,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3266 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2024-12-01 23:06:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2135. [2024-12-01 23:06:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 1689 states have (on average 1.654825340438129) internal successors, (2795), 1760 states have internal predecessors, (2795), 349 states have call successors, (349), 82 states have call predecessors, (349), 96 states have return successors, (406), 342 states have call predecessors, (406), 344 states have call successors, (406) [2024-12-01 23:06:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3550 transitions. [2024-12-01 23:06:10,058 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3550 transitions. Word has length 146 [2024-12-01 23:06:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:10,058 INFO L471 AbstractCegarLoop]: Abstraction has 2135 states and 3550 transitions. [2024-12-01 23:06:10,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 23:06:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3550 transitions. [2024-12-01 23:06:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-01 23:06:10,061 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:10,061 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:10,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-01 23:06:10,061 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:10,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash -550881317, now seen corresponding path program 1 times [2024-12-01 23:06:10,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894258996] [2024-12-01 23:06:10,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-01 23:06:10,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894258996] [2024-12-01 23:06:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894258996] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:10,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:10,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 23:06:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718254684] [2024-12-01 23:06:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:10,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:06:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:10,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:06:10,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:06:10,266 INFO L87 Difference]: Start difference. First operand 2135 states and 3550 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 23:06:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:12,009 INFO L93 Difference]: Finished difference Result 6884 states and 11642 transitions. [2024-12-01 23:06:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:06:12,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 150 [2024-12-01 23:06:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:12,037 INFO L225 Difference]: With dead ends: 6884 [2024-12-01 23:06:12,037 INFO L226 Difference]: Without dead ends: 4848 [2024-12-01 23:06:12,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:06:12,046 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 4200 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 1032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4342 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:12,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4342 Valid, 1433 Invalid, 3748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1032 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-01 23:06:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4848 states. [2024-12-01 23:06:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4848 to 4749. [2024-12-01 23:06:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 3718 states have (on average 1.6541151156535772) internal successors, (6150), 3881 states have internal predecessors, (6150), 816 states have call successors, (816), 182 states have call predecessors, (816), 214 states have return successors, (1005), 807 states have call predecessors, (1005), 811 states have call successors, (1005) [2024-12-01 23:06:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 7971 transitions. [2024-12-01 23:06:12,220 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 7971 transitions. Word has length 150 [2024-12-01 23:06:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:12,220 INFO L471 AbstractCegarLoop]: Abstraction has 4749 states and 7971 transitions. [2024-12-01 23:06:12,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 23:06:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 7971 transitions. [2024-12-01 23:06:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-01 23:06:12,223 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:12,223 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:12,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-01 23:06:12,223 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:12,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 640013317, now seen corresponding path program 1 times [2024-12-01 23:06:12,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:12,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197955886] [2024-12-01 23:06:12,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:06:12,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:12,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197955886] [2024-12-01 23:06:12,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197955886] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:12,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522848033] [2024-12-01 23:06:12,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:12,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:12,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:12,419 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:12,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-01 23:06:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:12,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:06:12,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 23:06:12,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522848033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:12,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:12,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-01 23:06:12,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348758448] [2024-12-01 23:06:12,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:12,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:12,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:12,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:12,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:06:12,858 INFO L87 Difference]: Start difference. First operand 4749 states and 7971 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 23:06:13,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:13,072 INFO L93 Difference]: Finished difference Result 9234 states and 15759 transitions. [2024-12-01 23:06:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:13,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 153 [2024-12-01 23:06:13,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:13,093 INFO L225 Difference]: With dead ends: 9234 [2024-12-01 23:06:13,093 INFO L226 Difference]: Without dead ends: 4807 [2024-12-01 23:06:13,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:06:13,106 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 266 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:13,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 2378 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:06:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2024-12-01 23:06:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4753. [2024-12-01 23:06:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 3720 states have (on average 1.6389784946236559) internal successors, (6097), 3885 states have internal predecessors, (6097), 816 states have call successors, (816), 182 states have call predecessors, (816), 216 states have return successors, (1009), 807 states have call predecessors, (1009), 811 states have call successors, (1009) [2024-12-01 23:06:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 7922 transitions. [2024-12-01 23:06:13,272 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 7922 transitions. Word has length 153 [2024-12-01 23:06:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:13,273 INFO L471 AbstractCegarLoop]: Abstraction has 4753 states and 7922 transitions. [2024-12-01 23:06:13,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 23:06:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 7922 transitions. [2024-12-01 23:06:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-01 23:06:13,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:13,275 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:13,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-01 23:06:13,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:13,475 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:13,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash -508704927, now seen corresponding path program 1 times [2024-12-01 23:06:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628672666] [2024-12-01 23:06:13,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:13,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:06:13,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628672666] [2024-12-01 23:06:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628672666] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649692563] [2024-12-01 23:06:13,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:13,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:13,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:13,757 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:13,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-01 23:06:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:14,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:06:14,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 23:06:14,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649692563] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:14,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:14,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-01 23:06:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338884476] [2024-12-01 23:06:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:14,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:14,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:14,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:06:14,102 INFO L87 Difference]: Start difference. First operand 4753 states and 7922 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:06:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:14,362 INFO L93 Difference]: Finished difference Result 9459 states and 15997 transitions. [2024-12-01 23:06:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:14,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2024-12-01 23:06:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:14,389 INFO L225 Difference]: With dead ends: 9459 [2024-12-01 23:06:14,389 INFO L226 Difference]: Without dead ends: 4803 [2024-12-01 23:06:14,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:06:14,407 INFO L435 NwaCegarLoop]: 802 mSDtfsCounter, 14 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:14,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2372 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:06:14,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2024-12-01 23:06:14,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4803. [2024-12-01 23:06:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 3760 states have (on average 1.629255319148936) internal successors, (6126), 3930 states have internal predecessors, (6126), 816 states have call successors, (816), 187 states have call predecessors, (816), 226 states have return successors, (1019), 807 states have call predecessors, (1019), 811 states have call successors, (1019) [2024-12-01 23:06:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 7961 transitions. [2024-12-01 23:06:14,574 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 7961 transitions. Word has length 157 [2024-12-01 23:06:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:14,575 INFO L471 AbstractCegarLoop]: Abstraction has 4803 states and 7961 transitions. [2024-12-01 23:06:14,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:06:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 7961 transitions. [2024-12-01 23:06:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-01 23:06:14,577 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:14,577 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:14,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-01 23:06:14,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:14,778 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:14,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:14,778 INFO L85 PathProgramCache]: Analyzing trace with hash 683819678, now seen corresponding path program 1 times [2024-12-01 23:06:14,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:14,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575056887] [2024-12-01 23:06:14,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:14,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-01 23:06:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575056887] [2024-12-01 23:06:14,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575056887] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:14,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:14,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:06:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121162351] [2024-12-01 23:06:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:14,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:06:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:14,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:06:14,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:06:14,991 INFO L87 Difference]: Start difference. First operand 4803 states and 7961 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-01 23:06:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:16,944 INFO L93 Difference]: Finished difference Result 9254 states and 15429 transitions. [2024-12-01 23:06:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-01 23:06:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2024-12-01 23:06:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:16,965 INFO L225 Difference]: With dead ends: 9254 [2024-12-01 23:06:16,965 INFO L226 Difference]: Without dead ends: 5327 [2024-12-01 23:06:16,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-12-01 23:06:16,976 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 1990 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 3503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:16,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 1684 Invalid, 3503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-01 23:06:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5327 states. [2024-12-01 23:06:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5327 to 4952. [2024-12-01 23:06:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4952 states, 3870 states have (on average 1.6196382428940568) internal successors, (6268), 4050 states have internal predecessors, (6268), 830 states have call successors, (830), 202 states have call predecessors, (830), 251 states have return successors, (1070), 821 states have call predecessors, (1070), 825 states have call successors, (1070) [2024-12-01 23:06:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4952 states to 4952 states and 8168 transitions. [2024-12-01 23:06:17,213 INFO L78 Accepts]: Start accepts. Automaton has 4952 states and 8168 transitions. Word has length 158 [2024-12-01 23:06:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:17,213 INFO L471 AbstractCegarLoop]: Abstraction has 4952 states and 8168 transitions. [2024-12-01 23:06:17,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-01 23:06:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4952 states and 8168 transitions. [2024-12-01 23:06:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-01 23:06:17,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:17,216 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:17,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-01 23:06:17,217 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:17,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:17,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1931371040, now seen corresponding path program 1 times [2024-12-01 23:06:17,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:17,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684587408] [2024-12-01 23:06:17,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:17,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-01 23:06:17,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:17,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684587408] [2024-12-01 23:06:17,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684587408] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:17,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048953062] [2024-12-01 23:06:17,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:17,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:17,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:17,439 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:17,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-01 23:06:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:17,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 23:06:17,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 23:06:17,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:17,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048953062] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:17,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:17,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-01 23:06:17,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557664595] [2024-12-01 23:06:17,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:17,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:06:17,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:17,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:06:17,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:06:17,757 INFO L87 Difference]: Start difference. First operand 4952 states and 8168 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-01 23:06:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:18,026 INFO L93 Difference]: Finished difference Result 10367 states and 17227 transitions. [2024-12-01 23:06:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:06:18,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2024-12-01 23:06:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:18,049 INFO L225 Difference]: With dead ends: 10367 [2024-12-01 23:06:18,049 INFO L226 Difference]: Without dead ends: 6264 [2024-12-01 23:06:18,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:06:18,060 INFO L435 NwaCegarLoop]: 1279 mSDtfsCounter, 724 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:18,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 2084 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2024-12-01 23:06:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 5931. [2024-12-01 23:06:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5931 states, 4647 states have (on average 1.6223369916074888) internal successors, (7539), 4850 states have internal predecessors, (7539), 989 states have call successors, (989), 243 states have call predecessors, (989), 294 states have return successors, (1264), 983 states have call predecessors, (1264), 984 states have call successors, (1264) [2024-12-01 23:06:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 9792 transitions. [2024-12-01 23:06:18,289 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 9792 transitions. Word has length 163 [2024-12-01 23:06:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:18,290 INFO L471 AbstractCegarLoop]: Abstraction has 5931 states and 9792 transitions. [2024-12-01 23:06:18,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-01 23:06:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 9792 transitions. [2024-12-01 23:06:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-01 23:06:18,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:18,293 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:18,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-01 23:06:18,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-01 23:06:18,493 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:18,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1141873165, now seen corresponding path program 1 times [2024-12-01 23:06:18,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399743651] [2024-12-01 23:06:18,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:06:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399743651] [2024-12-01 23:06:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399743651] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983873371] [2024-12-01 23:06:18,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:18,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:18,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:18,705 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:18,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-01 23:06:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:18,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 23:06:18,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-01 23:06:19,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:19,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983873371] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:19,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:19,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-01 23:06:19,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858088942] [2024-12-01 23:06:19,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:19,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:06:19,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:19,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:06:19,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-01 23:06:19,149 INFO L87 Difference]: Start difference. First operand 5931 states and 9792 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-01 23:06:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:21,243 INFO L93 Difference]: Finished difference Result 11692 states and 19465 transitions. [2024-12-01 23:06:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 23:06:21,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 165 [2024-12-01 23:06:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:21,278 INFO L225 Difference]: With dead ends: 11692 [2024-12-01 23:06:21,278 INFO L226 Difference]: Without dead ends: 6504 [2024-12-01 23:06:21,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-12-01 23:06:21,295 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 1727 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 3484 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 3484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:21,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 2383 Invalid, 3823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 3484 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-01 23:06:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2024-12-01 23:06:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 6037. [2024-12-01 23:06:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6037 states, 4711 states have (on average 1.6177032477181066) internal successors, (7621), 4928 states have internal predecessors, (7621), 1021 states have call successors, (1021), 243 states have call predecessors, (1021), 304 states have return successors, (1394), 1011 states have call predecessors, (1394), 1016 states have call successors, (1394) [2024-12-01 23:06:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 10036 transitions. [2024-12-01 23:06:21,596 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 10036 transitions. Word has length 165 [2024-12-01 23:06:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:21,596 INFO L471 AbstractCegarLoop]: Abstraction has 6037 states and 10036 transitions. [2024-12-01 23:06:21,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-01 23:06:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 10036 transitions. [2024-12-01 23:06:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-01 23:06:21,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:21,598 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:21,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-01 23:06:21,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-01 23:06:21,799 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:21,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1242785132, now seen corresponding path program 1 times [2024-12-01 23:06:21,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:21,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554739800] [2024-12-01 23:06:21,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-01 23:06:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:22,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554739800] [2024-12-01 23:06:22,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554739800] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:22,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:22,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 23:06:22,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533499761] [2024-12-01 23:06:22,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:22,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:06:22,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:22,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:06:22,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:06:22,027 INFO L87 Difference]: Start difference. First operand 6037 states and 10036 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-01 23:06:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:23,354 INFO L93 Difference]: Finished difference Result 12001 states and 20067 transitions. [2024-12-01 23:06:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:06:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2024-12-01 23:06:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:23,391 INFO L225 Difference]: With dead ends: 12001 [2024-12-01 23:06:23,391 INFO L226 Difference]: Without dead ends: 6071 [2024-12-01 23:06:23,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:06:23,414 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 1204 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:23,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 1713 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-01 23:06:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6071 states. [2024-12-01 23:06:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6071 to 6049. [2024-12-01 23:06:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6049 states, 4717 states have (on average 1.6092855628577485) internal successors, (7591), 4940 states have internal predecessors, (7591), 1021 states have call successors, (1021), 243 states have call predecessors, (1021), 310 states have return successors, (1442), 1011 states have call predecessors, (1442), 1016 states have call successors, (1442) [2024-12-01 23:06:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6049 states to 6049 states and 10054 transitions. [2024-12-01 23:06:23,817 INFO L78 Accepts]: Start accepts. Automaton has 6049 states and 10054 transitions. Word has length 165 [2024-12-01 23:06:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:23,817 INFO L471 AbstractCegarLoop]: Abstraction has 6049 states and 10054 transitions. [2024-12-01 23:06:23,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-01 23:06:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6049 states and 10054 transitions. [2024-12-01 23:06:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-01 23:06:23,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:23,821 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:23,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-01 23:06:23,822 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:23,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1057170271, now seen corresponding path program 1 times [2024-12-01 23:06:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295912406] [2024-12-01 23:06:23,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-01 23:06:23,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:23,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295912406] [2024-12-01 23:06:23,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295912406] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:23,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:23,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:06:23,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472382447] [2024-12-01 23:06:23,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:23,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:06:23,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:23,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:06:23,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:06:23,969 INFO L87 Difference]: Start difference. First operand 6049 states and 10054 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-01 23:06:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:26,468 INFO L93 Difference]: Finished difference Result 21553 states and 36819 transitions. [2024-12-01 23:06:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:06:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 164 [2024-12-01 23:06:26,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:26,535 INFO L225 Difference]: With dead ends: 21553 [2024-12-01 23:06:26,535 INFO L226 Difference]: Without dead ends: 15619 [2024-12-01 23:06:26,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:06:26,557 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 2137 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:26,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 1302 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-01 23:06:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15619 states. [2024-12-01 23:06:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15619 to 15116. [2024-12-01 23:06:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15116 states, 11342 states have (on average 1.59760183389173) internal successors, (18120), 12026 states have internal predecessors, (18120), 3055 states have call successors, (3055), 522 states have call predecessors, (3055), 718 states have return successors, (4554), 3051 states have call predecessors, (4554), 3050 states have call successors, (4554) [2024-12-01 23:06:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15116 states to 15116 states and 25729 transitions. [2024-12-01 23:06:27,388 INFO L78 Accepts]: Start accepts. Automaton has 15116 states and 25729 transitions. Word has length 164 [2024-12-01 23:06:27,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:27,389 INFO L471 AbstractCegarLoop]: Abstraction has 15116 states and 25729 transitions. [2024-12-01 23:06:27,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-01 23:06:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 15116 states and 25729 transitions. [2024-12-01 23:06:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-01 23:06:27,396 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:27,397 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:27,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-01 23:06:27,397 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:27,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash 361623403, now seen corresponding path program 1 times [2024-12-01 23:06:27,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:27,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556895287] [2024-12-01 23:06:27,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-01 23:06:27,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:27,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556895287] [2024-12-01 23:06:27,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556895287] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:27,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:27,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:06:27,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827279436] [2024-12-01 23:06:27,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:27,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:27,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:27,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:27,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:06:27,752 INFO L87 Difference]: Start difference. First operand 15116 states and 25729 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-01 23:06:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:30,488 INFO L93 Difference]: Finished difference Result 45731 states and 79099 transitions. [2024-12-01 23:06:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:30,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2024-12-01 23:06:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:30,622 INFO L225 Difference]: With dead ends: 45731 [2024-12-01 23:06:30,622 INFO L226 Difference]: Without dead ends: 30719 [2024-12-01 23:06:30,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:06:30,675 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 1801 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:30,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 608 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-01 23:06:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30719 states. [2024-12-01 23:06:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30719 to 30717. [2024-12-01 23:06:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30717 states, 23068 states have (on average 1.5857898387376452) internal successors, (36581), 24508 states have internal predecessors, (36581), 6130 states have call successors, (6130), 1040 states have call predecessors, (6130), 1518 states have return successors, (10076), 6136 states have call predecessors, (10076), 6125 states have call successors, (10076) [2024-12-01 23:06:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30717 states to 30717 states and 52787 transitions. [2024-12-01 23:06:32,840 INFO L78 Accepts]: Start accepts. Automaton has 30717 states and 52787 transitions. Word has length 172 [2024-12-01 23:06:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:32,840 INFO L471 AbstractCegarLoop]: Abstraction has 30717 states and 52787 transitions. [2024-12-01 23:06:32,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-01 23:06:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 30717 states and 52787 transitions. [2024-12-01 23:06:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:06:32,847 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:32,847 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:32,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-01 23:06:32,847 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:32,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash -872780944, now seen corresponding path program 1 times [2024-12-01 23:06:32,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:32,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882712548] [2024-12-01 23:06:32,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:32,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-01 23:06:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882712548] [2024-12-01 23:06:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882712548] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561190665] [2024-12-01 23:06:32,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:32,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:32,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:32,946 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:32,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-01 23:06:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:33,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 23:06:33,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-01 23:06:33,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:33,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561190665] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:33,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:06:33,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154913346] [2024-12-01 23:06:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:33,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:33,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:33,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:06:33,283 INFO L87 Difference]: Start difference. First operand 30717 states and 52787 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-01 23:06:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:34,304 INFO L93 Difference]: Finished difference Result 45452 states and 77826 transitions. [2024-12-01 23:06:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:06:34,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 176 [2024-12-01 23:06:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:34,367 INFO L225 Difference]: With dead ends: 45452 [2024-12-01 23:06:34,368 INFO L226 Difference]: Without dead ends: 14836 [2024-12-01 23:06:34,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:06:34,443 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 15 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:34,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2365 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2024-12-01 23:06:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 14836. [2024-12-01 23:06:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14836 states, 11155 states have (on average 1.5909457642312863) internal successors, (17747), 11838 states have internal predecessors, (17747), 2962 states have call successors, (2962), 522 states have call predecessors, (2962), 718 states have return successors, (4462), 2959 states have call predecessors, (4462), 2958 states have call successors, (4462) [2024-12-01 23:06:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14836 states to 14836 states and 25171 transitions. [2024-12-01 23:06:35,129 INFO L78 Accepts]: Start accepts. Automaton has 14836 states and 25171 transitions. Word has length 176 [2024-12-01 23:06:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:35,130 INFO L471 AbstractCegarLoop]: Abstraction has 14836 states and 25171 transitions. [2024-12-01 23:06:35,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-01 23:06:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14836 states and 25171 transitions. [2024-12-01 23:06:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-01 23:06:35,134 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:35,135 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:35,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-01 23:06:35,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:35,335 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:35,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2062440343, now seen corresponding path program 1 times [2024-12-01 23:06:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370059080] [2024-12-01 23:06:35,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:35,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 23:06:35,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370059080] [2024-12-01 23:06:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370059080] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915654771] [2024-12-01 23:06:35,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:35,791 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:35,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-01 23:06:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:36,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 23:06:36,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-01 23:06:36,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915654771] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2024-12-01 23:06:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281525226] [2024-12-01 23:06:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:36,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:06:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:36,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:06:36,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:06:36,165 INFO L87 Difference]: Start difference. First operand 14836 states and 25171 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-01 23:06:36,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:36,736 INFO L93 Difference]: Finished difference Result 14886 states and 25235 transitions. [2024-12-01 23:06:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:36,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 175 [2024-12-01 23:06:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:36,812 INFO L225 Difference]: With dead ends: 14886 [2024-12-01 23:06:36,812 INFO L226 Difference]: Without dead ends: 14872 [2024-12-01 23:06:36,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:06:36,824 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 0 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:36,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3198 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:06:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14872 states. [2024-12-01 23:06:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14872 to 14872. [2024-12-01 23:06:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14872 states, 11191 states have (on average 1.5879724778840139) internal successors, (17771), 11874 states have internal predecessors, (17771), 2962 states have call successors, (2962), 522 states have call predecessors, (2962), 718 states have return successors, (4462), 2959 states have call predecessors, (4462), 2958 states have call successors, (4462) [2024-12-01 23:06:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14872 states to 14872 states and 25195 transitions. [2024-12-01 23:06:37,980 INFO L78 Accepts]: Start accepts. Automaton has 14872 states and 25195 transitions. Word has length 175 [2024-12-01 23:06:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:37,980 INFO L471 AbstractCegarLoop]: Abstraction has 14872 states and 25195 transitions. [2024-12-01 23:06:37,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-01 23:06:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 14872 states and 25195 transitions. [2024-12-01 23:06:37,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-01 23:06:37,988 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:37,988 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:37,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-01 23:06:38,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-01 23:06:38,189 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:38,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1898571441, now seen corresponding path program 1 times [2024-12-01 23:06:38,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:38,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628225708] [2024-12-01 23:06:38,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:38,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-01 23:06:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628225708] [2024-12-01 23:06:38,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628225708] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788564794] [2024-12-01 23:06:38,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:38,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:38,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:38,720 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:38,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-01 23:06:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:39,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 2036 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-01 23:06:39,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-01 23:06:39,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:06:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-12-01 23:06:39,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788564794] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:06:39,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:06:39,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 26 [2024-12-01 23:06:39,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036247385] [2024-12-01 23:06:39,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:06:39,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-01 23:06:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:39,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-01 23:06:39,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-12-01 23:06:39,956 INFO L87 Difference]: Start difference. First operand 14872 states and 25195 transitions. Second operand has 26 states, 25 states have (on average 12.16) internal successors, (304), 22 states have internal predecessors, (304), 11 states have call successors, (55), 6 states have call predecessors, (55), 15 states have return successors, (56), 14 states have call predecessors, (56), 10 states have call successors, (56) [2024-12-01 23:06:53,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:53,850 INFO L93 Difference]: Finished difference Result 83687 states and 145553 transitions. [2024-12-01 23:06:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-01 23:06:53,851 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 12.16) internal successors, (304), 22 states have internal predecessors, (304), 11 states have call successors, (55), 6 states have call predecessors, (55), 15 states have return successors, (56), 14 states have call predecessors, (56), 10 states have call successors, (56) Word has length 203 [2024-12-01 23:06:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:54,199 INFO L225 Difference]: With dead ends: 83687 [2024-12-01 23:06:54,199 INFO L226 Difference]: Without dead ends: 68937 [2024-12-01 23:06:54,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 410 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=580, Invalid=3202, Unknown=0, NotChecked=0, Total=3782 [2024-12-01 23:06:54,276 INFO L435 NwaCegarLoop]: 1478 mSDtfsCounter, 5998 mSDsluCounter, 17876 mSDsCounter, 0 mSdLazyCounter, 26387 mSolverCounterSat, 1639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6066 SdHoareTripleChecker+Valid, 19354 SdHoareTripleChecker+Invalid, 28026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 26387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:54,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6066 Valid, 19354 Invalid, 28026 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1639 Valid, 26387 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-12-01 23:06:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68937 states. [2024-12-01 23:06:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68937 to 68323. [2024-12-01 23:06:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68323 states, 50012 states have (on average 1.5752019515316324) internal successors, (78779), 53304 states have internal predecessors, (78779), 15177 states have call successors, (15177), 2068 states have call predecessors, (15177), 3133 states have return successors, (25073), 15366 states have call predecessors, (25073), 15173 states have call successors, (25073) [2024-12-01 23:06:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68323 states to 68323 states and 119029 transitions. [2024-12-01 23:06:58,694 INFO L78 Accepts]: Start accepts. Automaton has 68323 states and 119029 transitions. Word has length 203 [2024-12-01 23:06:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:58,695 INFO L471 AbstractCegarLoop]: Abstraction has 68323 states and 119029 transitions. [2024-12-01 23:06:58,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 12.16) internal successors, (304), 22 states have internal predecessors, (304), 11 states have call successors, (55), 6 states have call predecessors, (55), 15 states have return successors, (56), 14 states have call predecessors, (56), 10 states have call successors, (56) [2024-12-01 23:06:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 68323 states and 119029 transitions. [2024-12-01 23:06:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-01 23:06:58,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:58,724 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:58,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-01 23:06:58,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:58,924 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:58,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash 305384822, now seen corresponding path program 1 times [2024-12-01 23:06:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:58,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341271701] [2024-12-01 23:06:58,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-12-01 23:06:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341271701] [2024-12-01 23:06:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341271701] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:06:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282548720] [2024-12-01 23:06:59,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:59,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:06:59,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:59,040 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:06:59,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-01 23:06:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:59,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:06:59,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:06:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-01 23:06:59,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:06:59,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282548720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:59,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:06:59,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:06:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302077351] [2024-12-01 23:06:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:59,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:06:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:59,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:06:59,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:06:59,426 INFO L87 Difference]: Start difference. First operand 68323 states and 119029 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:07:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:04,369 INFO L93 Difference]: Finished difference Result 137827 states and 242379 transitions. [2024-12-01 23:07:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:07:04,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 204 [2024-12-01 23:07:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:04,912 INFO L225 Difference]: With dead ends: 137827 [2024-12-01 23:07:04,912 INFO L226 Difference]: Without dead ends: 69647 [2024-12-01 23:07:05,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:05,137 INFO L435 NwaCegarLoop]: 788 mSDtfsCounter, 10 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:05,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2329 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:07:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69647 states. [2024-12-01 23:07:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69647 to 69567. [2024-12-01 23:07:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69567 states, 51066 states have (on average 1.5746876591078212) internal successors, (80413), 54412 states have internal predecessors, (80413), 15177 states have call successors, (15177), 2216 states have call predecessors, (15177), 3323 states have return successors, (24875), 15354 states have call predecessors, (24875), 15173 states have call successors, (24875) [2024-12-01 23:07:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69567 states to 69567 states and 120465 transitions. [2024-12-01 23:07:10,603 INFO L78 Accepts]: Start accepts. Automaton has 69567 states and 120465 transitions. Word has length 204 [2024-12-01 23:07:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:10,603 INFO L471 AbstractCegarLoop]: Abstraction has 69567 states and 120465 transitions. [2024-12-01 23:07:10,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:07:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 69567 states and 120465 transitions. [2024-12-01 23:07:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-01 23:07:10,621 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:10,622 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:07:10,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-01 23:07:10,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-12-01 23:07:10,822 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:10,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:10,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1244798403, now seen corresponding path program 1 times [2024-12-01 23:07:10,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:10,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231046912] [2024-12-01 23:07:10,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:10,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-12-01 23:07:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231046912] [2024-12-01 23:07:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231046912] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447765546] [2024-12-01 23:07:10,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:10,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:10,986 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:10,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-01 23:07:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:11,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:07:11,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-01 23:07:11,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:11,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447765546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:11,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:11,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-01 23:07:11,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731449350] [2024-12-01 23:07:11,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:11,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:11,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:11,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:11,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:07:11,365 INFO L87 Difference]: Start difference. First operand 69567 states and 120465 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:07:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:15,601 INFO L93 Difference]: Finished difference Result 119454 states and 206469 transitions. [2024-12-01 23:07:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:07:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 205 [2024-12-01 23:07:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:15,978 INFO L225 Difference]: With dead ends: 119454 [2024-12-01 23:07:15,978 INFO L226 Difference]: Without dead ends: 69567 [2024-12-01 23:07:16,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:07:16,174 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 9 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:16,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2381 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69567 states. [2024-12-01 23:07:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69567 to 69561. [2024-12-01 23:07:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69561 states, 51060 states have (on average 1.5746768507638074) internal successors, (80403), 54406 states have internal predecessors, (80403), 15177 states have call successors, (15177), 2216 states have call predecessors, (15177), 3323 states have return successors, (24875), 15354 states have call predecessors, (24875), 15173 states have call successors, (24875) [2024-12-01 23:07:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69561 states to 69561 states and 120455 transitions. [2024-12-01 23:07:20,345 INFO L78 Accepts]: Start accepts. Automaton has 69561 states and 120455 transitions. Word has length 205 [2024-12-01 23:07:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:20,345 INFO L471 AbstractCegarLoop]: Abstraction has 69561 states and 120455 transitions. [2024-12-01 23:07:20,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:07:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 69561 states and 120455 transitions. [2024-12-01 23:07:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-01 23:07:20,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:20,364 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:07:20,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-01 23:07:20,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-01 23:07:20,564 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:20,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:20,565 INFO L85 PathProgramCache]: Analyzing trace with hash 944533211, now seen corresponding path program 1 times [2024-12-01 23:07:20,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:20,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836354323] [2024-12-01 23:07:20,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:20,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-12-01 23:07:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836354323] [2024-12-01 23:07:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836354323] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670862832] [2024-12-01 23:07:20,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:20,643 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:20,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-01 23:07:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:20,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:07:21,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-01 23:07:21,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:21,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670862832] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:21,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:21,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 23:07:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882501974] [2024-12-01 23:07:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:21,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:21,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:21,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:21,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:07:21,017 INFO L87 Difference]: Start difference. First operand 69561 states and 120455 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:07:26,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:26,524 INFO L93 Difference]: Finished difference Result 139565 states and 244779 transitions. [2024-12-01 23:07:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:07:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 206 [2024-12-01 23:07:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:26,966 INFO L225 Difference]: With dead ends: 139565 [2024-12-01 23:07:26,966 INFO L226 Difference]: Without dead ends: 69813 [2024-12-01 23:07:27,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:27,279 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 12 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:27,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2333 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:07:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69813 states. [2024-12-01 23:07:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69813 to 69717. [2024-12-01 23:07:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69717 states, 51234 states have (on average 1.5642932427684741) internal successors, (80145), 54530 states have internal predecessors, (80145), 15177 states have call successors, (15177), 2248 states have call predecessors, (15177), 3305 states have return successors, (24731), 15354 states have call predecessors, (24731), 15173 states have call successors, (24731) [2024-12-01 23:07:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69717 states to 69717 states and 120053 transitions. [2024-12-01 23:07:31,445 INFO L78 Accepts]: Start accepts. Automaton has 69717 states and 120053 transitions. Word has length 206 [2024-12-01 23:07:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:31,445 INFO L471 AbstractCegarLoop]: Abstraction has 69717 states and 120053 transitions. [2024-12-01 23:07:31,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:07:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 69717 states and 120053 transitions. [2024-12-01 23:07:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-12-01 23:07:31,465 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:31,465 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:07:31,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-01 23:07:31,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-12-01 23:07:31,666 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:31,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:31,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1036489206, now seen corresponding path program 1 times [2024-12-01 23:07:31,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:31,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101679289] [2024-12-01 23:07:31,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:31,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-01 23:07:31,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101679289] [2024-12-01 23:07:31,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101679289] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831438031] [2024-12-01 23:07:31,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:31,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:31,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:31,746 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:31,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-01 23:07:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:32,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 23:07:32,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-01 23:07:32,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:07:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-01 23:07:32,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831438031] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:07:32,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:07:32,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 8] total 16 [2024-12-01 23:07:32,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904161077] [2024-12-01 23:07:32,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:07:32,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-01 23:07:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:32,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-01 23:07:32,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-12-01 23:07:32,597 INFO L87 Difference]: Start difference. First operand 69717 states and 120053 transitions. Second operand has 16 states, 16 states have (on average 15.5625) internal successors, (249), 14 states have internal predecessors, (249), 7 states have call successors, (48), 5 states have call predecessors, (48), 11 states have return successors, (49), 9 states have call predecessors, (49), 7 states have call successors, (49) [2024-12-01 23:07:47,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:47,040 INFO L93 Difference]: Finished difference Result 234007 states and 415568 transitions. [2024-12-01 23:07:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-01 23:07:47,041 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 14 states have internal predecessors, (249), 7 states have call successors, (48), 5 states have call predecessors, (48), 11 states have return successors, (49), 9 states have call predecessors, (49), 7 states have call successors, (49) Word has length 209 [2024-12-01 23:07:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:48,336 INFO L225 Difference]: With dead ends: 234007 [2024-12-01 23:07:48,337 INFO L226 Difference]: Without dead ends: 163011 [2024-12-01 23:07:48,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2024-12-01 23:07:48,834 INFO L435 NwaCegarLoop]: 794 mSDtfsCounter, 2417 mSDsluCounter, 5180 mSDsCounter, 0 mSdLazyCounter, 8261 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 5974 SdHoareTripleChecker+Invalid, 8884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 8261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:48,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 5974 Invalid, 8884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 8261 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-01 23:07:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163011 states. [2024-12-01 23:07:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163011 to 161939. [2024-12-01 23:07:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161939 states, 115338 states have (on average 1.5537377100348542) internal successors, (179205), 123256 states have internal predecessors, (179205), 39629 states have call successors, (39629), 4470 states have call predecessors, (39629), 6971 states have return successors, (66453), 40388 states have call predecessors, (66453), 39625 states have call successors, (66453) [2024-12-01 23:08:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161939 states to 161939 states and 285287 transitions. [2024-12-01 23:08:01,105 INFO L78 Accepts]: Start accepts. Automaton has 161939 states and 285287 transitions. Word has length 209 [2024-12-01 23:08:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:01,106 INFO L471 AbstractCegarLoop]: Abstraction has 161939 states and 285287 transitions. [2024-12-01 23:08:01,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 14 states have internal predecessors, (249), 7 states have call successors, (48), 5 states have call predecessors, (48), 11 states have return successors, (49), 9 states have call predecessors, (49), 7 states have call successors, (49) [2024-12-01 23:08:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 161939 states and 285287 transitions. [2024-12-01 23:08:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-01 23:08:01,155 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:01,155 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:01,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-12-01 23:08:01,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-01 23:08:01,356 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:01,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash -856853502, now seen corresponding path program 1 times [2024-12-01 23:08:01,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:01,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067648751] [2024-12-01 23:08:01,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-01 23:08:01,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:01,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067648751] [2024-12-01 23:08:01,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067648751] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:01,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856724159] [2024-12-01 23:08:01,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:01,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:01,502 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:01,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-01 23:08:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:01,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 23:08:01,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-01 23:08:01,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:08:01,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856724159] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:01,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:08:01,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-01 23:08:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425974456] [2024-12-01 23:08:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:01,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:08:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:01,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:08:01,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:08:01,862 INFO L87 Difference]: Start difference. First operand 161939 states and 285287 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:08:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:12,626 INFO L93 Difference]: Finished difference Result 230213 states and 402977 transitions. [2024-12-01 23:08:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:08:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 210 [2024-12-01 23:08:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:13,956 INFO L225 Difference]: With dead ends: 230213 [2024-12-01 23:08:13,956 INFO L226 Difference]: Without dead ends: 161927 [2024-12-01 23:08:14,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:08:14,346 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 10 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:14,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2391 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:08:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161927 states. [2024-12-01 23:08:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161927 to 161927. [2024-12-01 23:08:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161927 states, 115326 states have (on average 1.5537779858834955) internal successors, (179191), 123244 states have internal predecessors, (179191), 39629 states have call successors, (39629), 4470 states have call predecessors, (39629), 6971 states have return successors, (66453), 40388 states have call predecessors, (66453), 39625 states have call successors, (66453) [2024-12-01 23:08:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161927 states to 161927 states and 285273 transitions. [2024-12-01 23:08:26,441 INFO L78 Accepts]: Start accepts. Automaton has 161927 states and 285273 transitions. Word has length 210 [2024-12-01 23:08:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:26,442 INFO L471 AbstractCegarLoop]: Abstraction has 161927 states and 285273 transitions. [2024-12-01 23:08:26,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:08:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 161927 states and 285273 transitions. [2024-12-01 23:08:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-01 23:08:26,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:26,491 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:26,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-12-01 23:08:26,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:26,692 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:26,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2063973918, now seen corresponding path program 1 times [2024-12-01 23:08:26,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:26,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802267597] [2024-12-01 23:08:26,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:26,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-01 23:08:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802267597] [2024-12-01 23:08:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802267597] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889750308] [2024-12-01 23:08:26,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:26,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:26,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:26,836 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:26,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-12-01 23:08:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:27,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:08:27,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-01 23:08:27,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:08:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889750308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:27,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:08:27,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-01 23:08:27,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682529225] [2024-12-01 23:08:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:27,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:08:27,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:27,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:08:27,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:08:27,225 INFO L87 Difference]: Start difference. First operand 161927 states and 285273 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:08:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:40,145 INFO L93 Difference]: Finished difference Result 315789 states and 561865 transitions. [2024-12-01 23:08:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:08:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 210 [2024-12-01 23:08:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:41,251 INFO L225 Difference]: With dead ends: 315789 [2024-12-01 23:08:41,251 INFO L226 Difference]: Without dead ends: 164491 [2024-12-01 23:08:42,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:08:42,257 INFO L435 NwaCegarLoop]: 791 mSDtfsCounter, 8 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:42,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2338 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:08:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164491 states. [2024-12-01 23:08:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164491 to 164359. [2024-12-01 23:08:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164359 states, 117382 states have (on average 1.5512344311734338) internal successors, (182087), 125396 states have internal predecessors, (182087), 39629 states have call successors, (39629), 4750 states have call predecessors, (39629), 7347 states have return successors, (66453), 40388 states have call predecessors, (66453), 39625 states have call successors, (66453) [2024-12-01 23:08:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164359 states to 164359 states and 288169 transitions. [2024-12-01 23:08:54,536 INFO L78 Accepts]: Start accepts. Automaton has 164359 states and 288169 transitions. Word has length 210 [2024-12-01 23:08:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:54,536 INFO L471 AbstractCegarLoop]: Abstraction has 164359 states and 288169 transitions. [2024-12-01 23:08:54,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:08:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 164359 states and 288169 transitions. [2024-12-01 23:08:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-01 23:08:54,587 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:54,587 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:54,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-12-01 23:08:54,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-01 23:08:54,788 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:54,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2033824276, now seen corresponding path program 1 times [2024-12-01 23:08:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501120292] [2024-12-01 23:08:54,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-01 23:08:54,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:54,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501120292] [2024-12-01 23:08:54,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501120292] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:54,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008278435] [2024-12-01 23:08:54,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:54,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:54,933 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:54,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-12-01 23:08:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:55,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:08:55,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-12-01 23:08:55,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:08:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008278435] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:08:55,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-01 23:08:55,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759121928] [2024-12-01 23:08:55,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:55,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:08:55,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:55,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:08:55,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:08:55,305 INFO L87 Difference]: Start difference. First operand 164359 states and 288169 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:09:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:06,512 INFO L93 Difference]: Finished difference Result 233879 states and 407410 transitions. [2024-12-01 23:09:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:09:06,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 210 [2024-12-01 23:09:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:07,664 INFO L225 Difference]: With dead ends: 233879 [2024-12-01 23:09:07,664 INFO L226 Difference]: Without dead ends: 164377 [2024-12-01 23:09:08,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:08,008 INFO L435 NwaCegarLoop]: 790 mSDtfsCounter, 3 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:08,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2361 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164377 states. [2024-12-01 23:09:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164377 to 164371. [2024-12-01 23:09:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164371 states, 117394 states have (on average 1.5511951207046357) internal successors, (182101), 125408 states have internal predecessors, (182101), 39629 states have call successors, (39629), 4750 states have call predecessors, (39629), 7347 states have return successors, (66453), 40388 states have call predecessors, (66453), 39625 states have call successors, (66453) [2024-12-01 23:09:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164371 states to 164371 states and 288183 transitions. [2024-12-01 23:09:20,336 INFO L78 Accepts]: Start accepts. Automaton has 164371 states and 288183 transitions. Word has length 210 [2024-12-01 23:09:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:20,337 INFO L471 AbstractCegarLoop]: Abstraction has 164371 states and 288183 transitions. [2024-12-01 23:09:20,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:09:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 164371 states and 288183 transitions. [2024-12-01 23:09:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-01 23:09:20,396 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:20,396 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:20,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-12-01 23:09:20,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-01 23:09:20,597 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:20,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash 607310442, now seen corresponding path program 1 times [2024-12-01 23:09:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:20,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051328057] [2024-12-01 23:09:20,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:20,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-01 23:09:20,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:20,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051328057] [2024-12-01 23:09:20,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051328057] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:20,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219455646] [2024-12-01 23:09:20,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:20,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:20,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:20,737 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:20,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-12-01 23:09:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:21,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:09:21,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-01 23:09:21,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:09:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219455646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:09:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-01 23:09:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338477111] [2024-12-01 23:09:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:21,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:09:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:21,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:09:21,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:21,124 INFO L87 Difference]: Start difference. First operand 164371 states and 288183 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:09:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:33,099 INFO L93 Difference]: Finished difference Result 318889 states and 565499 transitions. [2024-12-01 23:09:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 211 [2024-12-01 23:09:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:34,572 INFO L225 Difference]: With dead ends: 318889 [2024-12-01 23:09:34,572 INFO L226 Difference]: Without dead ends: 164551 [2024-12-01 23:09:35,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:09:35,630 INFO L435 NwaCegarLoop]: 786 mSDtfsCounter, 10 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:35,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2324 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164551 states. [2024-12-01 23:09:45,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164551 to 164359. [2024-12-01 23:09:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164359 states, 117388 states have (on average 1.5440675367158483) internal successors, (181255), 125396 states have internal predecessors, (181255), 39629 states have call successors, (39629), 4750 states have call predecessors, (39629), 7341 states have return successors, (66421), 40388 states have call predecessors, (66421), 39625 states have call successors, (66421) [2024-12-01 23:09:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164359 states to 164359 states and 287305 transitions. [2024-12-01 23:09:47,580 INFO L78 Accepts]: Start accepts. Automaton has 164359 states and 287305 transitions. Word has length 211 [2024-12-01 23:09:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:47,580 INFO L471 AbstractCegarLoop]: Abstraction has 164359 states and 287305 transitions. [2024-12-01 23:09:47,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-01 23:09:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 164359 states and 287305 transitions. [2024-12-01 23:09:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-01 23:09:47,638 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:47,638 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:47,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-12-01 23:09:47,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:47,838 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:47,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash -199981884, now seen corresponding path program 1 times [2024-12-01 23:09:47,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:47,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502237318] [2024-12-01 23:09:47,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:47,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-12-01 23:09:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:47,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502237318] [2024-12-01 23:09:47,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502237318] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:47,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748130200] [2024-12-01 23:09:47,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:47,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:47,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:47,973 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:47,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-12-01 23:09:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:48,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:09:48,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-12-01 23:09:48,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:09:48,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748130200] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:48,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:09:48,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-01 23:09:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852951301] [2024-12-01 23:09:48,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:48,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:09:48,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:48,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:09:48,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:48,355 INFO L87 Difference]: Start difference. First operand 164359 states and 287305 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-01 23:10:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:01,323 INFO L93 Difference]: Finished difference Result 320725 states and 565781 transitions. [2024-12-01 23:10:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:10:01,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 211 [2024-12-01 23:10:01,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:02,505 INFO L225 Difference]: With dead ends: 320725 [2024-12-01 23:10:02,505 INFO L226 Difference]: Without dead ends: 167007 [2024-12-01 23:10:03,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:10:03,430 INFO L435 NwaCegarLoop]: 783 mSDtfsCounter, 8 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:03,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2315 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:10:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167007 states. [2024-12-01 23:10:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167007 to 166815. [2024-12-01 23:10:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166815 states, 119456 states have (on average 1.5393366595231717) internal successors, (183883), 127572 states have internal predecessors, (183883), 39629 states have call successors, (39629), 5030 states have call predecessors, (39629), 7729 states have return successors, (66565), 40388 states have call predecessors, (66565), 39625 states have call successors, (66565) [2024-12-01 23:10:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166815 states to 166815 states and 290077 transitions. [2024-12-01 23:10:15,619 INFO L78 Accepts]: Start accepts. Automaton has 166815 states and 290077 transitions. Word has length 211 [2024-12-01 23:10:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:15,619 INFO L471 AbstractCegarLoop]: Abstraction has 166815 states and 290077 transitions. [2024-12-01 23:10:15,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-01 23:10:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 166815 states and 290077 transitions. [2024-12-01 23:10:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-12-01 23:10:15,674 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:15,674 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:15,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-12-01 23:10:15,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:15,874 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:10:15,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 13104601, now seen corresponding path program 1 times [2024-12-01 23:10:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:15,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956856996] [2024-12-01 23:10:15,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-12-01 23:10:16,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:16,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956856996] [2024-12-01 23:10:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956856996] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:10:16,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166127090] [2024-12-01 23:10:16,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:16,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:16,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:10:16,309 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:10:16,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72688f2a-8a8e-44a0-bfcc-0cb6577fd0d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-12-01 23:10:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:16,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 23:10:16,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:10:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-12-01 23:10:16,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:10:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166127090] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:16,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:10:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-01 23:10:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590166952] [2024-12-01 23:10:16,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:16,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:10:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:16,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:10:16,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:10:16,664 INFO L87 Difference]: Start difference. First operand 166815 states and 290077 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)