./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.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_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/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_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/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_9e012ccb-f543-4e3e-88c6-907c15e5467a/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 f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:40:53,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:40:53,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:40:53,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:40:53,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:40:53,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:40:53,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:40:53,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:40:53,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:40:53,905 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:40:53,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:40:53,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:40:53,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:40:53,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:40:53,905 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:40:53,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:40:53,906 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:40:53,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:40:53,907 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:40:53,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:40:53,907 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:40:53,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:40:53,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:40:53,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:40:53,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:40:53,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:40:53,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:40:53,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:40:53,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:40:53,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:40:53,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:40:53,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:40:53,909 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_9e012ccb-f543-4e3e-88c6-907c15e5467a/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 -> f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c [2024-12-02 07:40:54,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:40:54,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:40:54,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:40:54,131 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:40:54,131 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:40:54,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2024-12-02 07:40:56,810 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/data/321702b7f/55ce50e0668142a59e567321e653930f/FLAG881f5ba03 [2024-12-02 07:40:57,086 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:40:57,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2024-12-02 07:40:57,101 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/data/321702b7f/55ce50e0668142a59e567321e653930f/FLAG881f5ba03 [2024-12-02 07:40:57,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/data/321702b7f/55ce50e0668142a59e567321e653930f [2024-12-02 07:40:57,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:40:57,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:40:57,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:40:57,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:40:57,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:40:57,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:57,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4757a318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57, skipping insertion in model container [2024-12-02 07:40:57,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:57,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:40:57,588 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_9e012ccb-f543-4e3e-88c6-907c15e5467a/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2024-12-02 07:40:57,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:40:57,835 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:40:57,843 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-12-02 07:40:57,844 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [67] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [260] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [269] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1874] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1968] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2086] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2124] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2472] [2024-12-02 07:40:57,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2838] [2024-12-02 07:40:57,854 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_9e012ccb-f543-4e3e-88c6-907c15e5467a/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2024-12-02 07:40:57,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:40:57,966 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:40:57,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57 WrapperNode [2024-12-02 07:40:57,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:40:57,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:40:57,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:40:57,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:40:57,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:57,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,024 INFO L138 Inliner]: procedures = 94, calls = 353, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 943 [2024-12-02 07:40:58,024 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:40:58,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:40:58,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:40:58,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:40:58,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,060 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 07:40:58,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,079 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:40:58,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:40:58,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:40:58,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:40:58,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (1/1) ... [2024-12-02 07:40:58,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:40:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:40:58,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:40:58,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:40:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:40:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 07:40:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 07:40:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 07:40:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 07:40:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 07:40:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 07:40:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 07:40:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 07:40:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 07:40:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 07:40:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 07:40:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 07:40:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 07:40:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 07:40:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 07:40:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 07:40:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 07:40:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 07:40:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 07:40:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 07:40:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 07:40:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 07:40:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 07:40:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 07:40:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 07:40:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 07:40:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 07:40:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 07:40:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 07:40:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 07:40:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 07:40:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 07:40:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 07:40:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 07:40:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 07:40:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 07:40:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 07:40:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 07:40:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 07:40:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 07:40:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 07:40:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 07:40:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 07:40:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 07:40:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 07:40:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 07:40:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 07:40:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 07:40:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 07:40:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 07:40:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:40:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:40:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 07:40:58,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 07:40:58,357 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:40:58,359 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:40:59,495 INFO L? ?]: Removed 481 outVars from TransFormulas that were not future-live. [2024-12-02 07:40:59,495 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:40:59,518 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:40:59,518 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:40:59,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:40:59 BoogieIcfgContainer [2024-12-02 07:40:59,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:40:59,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:40:59,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:40:59,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:40:59,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:40:57" (1/3) ... [2024-12-02 07:40:59,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130e8418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:40:59, skipping insertion in model container [2024-12-02 07:40:59,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:57" (2/3) ... [2024-12-02 07:40:59,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130e8418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:40:59, skipping insertion in model container [2024-12-02 07:40:59,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:40:59" (3/3) ... [2024-12-02 07:40:59,528 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2024-12-02 07:40:59,542 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:40:59,545 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product23.cil.c that has 29 procedures, 611 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:40:59,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:40:59,623 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;@aa71fba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:40:59,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:40:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 611 states, 468 states have (on average 1.6623931623931625) internal successors, (778), 486 states have internal predecessors, (778), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-12-02 07:40:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 07:40:59,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:40:59,650 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:40:59,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:40:59,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:40:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1072604170, now seen corresponding path program 1 times [2024-12-02 07:40:59,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:40:59,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113835750] [2024-12-02 07:40:59,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:40:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:40:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:00,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:00,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113835750] [2024-12-02 07:41:00,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113835750] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:00,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:00,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:41:00,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088412868] [2024-12-02 07:41:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:00,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:41:00,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:00,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:41:00,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:00,399 INFO L87 Difference]: Start difference. First operand has 611 states, 468 states have (on average 1.6623931623931625) internal successors, (778), 486 states have internal predecessors, (778), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:00,644 INFO L93 Difference]: Finished difference Result 1219 states and 2020 transitions. [2024-12-02 07:41:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:41:00,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2024-12-02 07:41:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:00,661 INFO L225 Difference]: With dead ends: 1219 [2024-12-02 07:41:00,661 INFO L226 Difference]: Without dead ends: 616 [2024-12-02 07:41:00,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:41:00,672 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 91 mSDsluCounter, 4845 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5831 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:00,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5831 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:41:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-12-02 07:41:00,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 614. [2024-12-02 07:41:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 471 states have (on average 1.653927813163482) internal successors, (779), 489 states have internal predecessors, (779), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2024-12-02 07:41:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1006 transitions. [2024-12-02 07:41:00,762 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1006 transitions. Word has length 115 [2024-12-02 07:41:00,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:00,763 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 1006 transitions. [2024-12-02 07:41:00,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1006 transitions. [2024-12-02 07:41:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 07:41:00,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:00,771 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:00,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:41:00,772 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:00,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1525639693, now seen corresponding path program 1 times [2024-12-02 07:41:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096606259] [2024-12-02 07:41:00,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:01,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096606259] [2024-12-02 07:41:01,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096606259] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:01,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:01,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:41:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281945188] [2024-12-02 07:41:01,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:01,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:41:01,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:01,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:41:01,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:01,156 INFO L87 Difference]: Start difference. First operand 614 states and 1006 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:01,302 INFO L93 Difference]: Finished difference Result 1223 states and 2015 transitions. [2024-12-02 07:41:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:41:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2024-12-02 07:41:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:01,308 INFO L225 Difference]: With dead ends: 1223 [2024-12-02 07:41:01,309 INFO L226 Difference]: Without dead ends: 625 [2024-12-02 07:41:01,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:41:01,314 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 90 mSDsluCounter, 4839 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5826 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:01,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5826 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:41:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-12-02 07:41:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 614. [2024-12-02 07:41:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 471 states have (on average 1.653927813163482) internal successors, (779), 489 states have internal predecessors, (779), 114 states have call successors, (114), 28 states have call predecessors, (114), 28 states have return successors, (113), 109 states have call predecessors, (113), 111 states have call successors, (113) [2024-12-02 07:41:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1006 transitions. [2024-12-02 07:41:01,359 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1006 transitions. Word has length 116 [2024-12-02 07:41:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:01,359 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 1006 transitions. [2024-12-02 07:41:01,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1006 transitions. [2024-12-02 07:41:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 07:41:01,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:01,364 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:01,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:41:01,365 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:01,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1658256149, now seen corresponding path program 1 times [2024-12-02 07:41:01,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723341325] [2024-12-02 07:41:01,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:01,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:01,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723341325] [2024-12-02 07:41:01,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723341325] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:01,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:01,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:01,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457696970] [2024-12-02 07:41:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:01,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:01,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:01,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:01,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:01,540 INFO L87 Difference]: Start difference. First operand 614 states and 1006 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:01,619 INFO L93 Difference]: Finished difference Result 1210 states and 1993 transitions. [2024-12-02 07:41:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:41:01,619 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-12-02 07:41:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:01,624 INFO L225 Difference]: With dead ends: 1210 [2024-12-02 07:41:01,624 INFO L226 Difference]: Without dead ends: 584 [2024-12-02 07:41:01,627 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 [2024-12-02 07:41:01,628 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 14 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:01,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2923 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-12-02 07:41:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2024-12-02 07:41:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 444 states have (on average 1.6373873873873874) internal successors, (727), 460 states have internal predecessors, (727), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 950 transitions. [2024-12-02 07:41:01,657 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 950 transitions. Word has length 116 [2024-12-02 07:41:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:01,657 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 950 transitions. [2024-12-02 07:41:01,657 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 950 transitions. [2024-12-02 07:41:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:41:01,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:01,661 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:01,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:41:01,661 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:01,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1455123122, now seen corresponding path program 1 times [2024-12-02 07:41:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:01,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551223381] [2024-12-02 07:41:01,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551223381] [2024-12-02 07:41:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551223381] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:01,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:01,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:41:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584639239] [2024-12-02 07:41:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:01,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:41:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:01,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:41:01,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:01,903 INFO L87 Difference]: Start difference. First operand 584 states and 950 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:01,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:01,998 INFO L93 Difference]: Finished difference Result 1161 states and 1899 transitions. [2024-12-02 07:41:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:41:01,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2024-12-02 07:41:01,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:02,003 INFO L225 Difference]: With dead ends: 1161 [2024-12-02 07:41:02,003 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 07:41:02,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:41:02,008 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 63 mSDsluCounter, 4642 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:02,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5582 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 07:41:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-12-02 07:41:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 438 states have (on average 1.63013698630137) internal successors, (714), 454 states have internal predecessors, (714), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 937 transitions. [2024-12-02 07:41:02,037 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 937 transitions. Word has length 117 [2024-12-02 07:41:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:02,037 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 937 transitions. [2024-12-02 07:41:02,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 937 transitions. [2024-12-02 07:41:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 07:41:02,041 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:02,041 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:02,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:41:02,041 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:02,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -257411721, now seen corresponding path program 1 times [2024-12-02 07:41:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272575020] [2024-12-02 07:41:02,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:02,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:02,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272575020] [2024-12-02 07:41:02,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272575020] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:02,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:02,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:41:02,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179320557] [2024-12-02 07:41:02,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:02,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:41:02,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:02,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:41:02,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:02,278 INFO L87 Difference]: Start difference. First operand 578 states and 937 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:02,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:02,375 INFO L93 Difference]: Finished difference Result 1149 states and 1873 transitions. [2024-12-02 07:41:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:41:02,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2024-12-02 07:41:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:02,380 INFO L225 Difference]: With dead ends: 1149 [2024-12-02 07:41:02,380 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 07:41:02,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:41:02,384 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 49 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:02,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5522 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:02,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 07:41:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 07:41:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 432 states have (on average 1.6226851851851851) internal successors, (701), 448 states have internal predecessors, (701), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 924 transitions. [2024-12-02 07:41:02,409 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 924 transitions. Word has length 118 [2024-12-02 07:41:02,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:02,410 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 924 transitions. [2024-12-02 07:41:02,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 924 transitions. [2024-12-02 07:41:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 07:41:02,413 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:02,413 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:02,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:41:02,413 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:02,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash 984956600, now seen corresponding path program 1 times [2024-12-02 07:41:02,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:02,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615049954] [2024-12-02 07:41:02,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:02,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:02,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615049954] [2024-12-02 07:41:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615049954] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:02,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:02,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:41:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376452708] [2024-12-02 07:41:02,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:02,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:41:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:02,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:41:02,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:02,613 INFO L87 Difference]: Start difference. First operand 572 states and 924 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:02,692 INFO L93 Difference]: Finished difference Result 1137 states and 1847 transitions. [2024-12-02 07:41:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:41:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 118 [2024-12-02 07:41:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:02,697 INFO L225 Difference]: With dead ends: 1137 [2024-12-02 07:41:02,697 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 07:41:02,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:41:02,701 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 24 mSDsluCounter, 4558 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:02,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5474 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 07:41:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 07:41:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 432 states have (on average 1.6203703703703705) internal successors, (700), 448 states have internal predecessors, (700), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 923 transitions. [2024-12-02 07:41:02,741 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 923 transitions. Word has length 118 [2024-12-02 07:41:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:02,741 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 923 transitions. [2024-12-02 07:41:02,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:02,741 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 923 transitions. [2024-12-02 07:41:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 07:41:02,744 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:02,745 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:02,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:41:02,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:02,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1523601042, now seen corresponding path program 1 times [2024-12-02 07:41:02,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:02,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593765984] [2024-12-02 07:41:02,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:02,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593765984] [2024-12-02 07:41:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593765984] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:02,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:02,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889233201] [2024-12-02 07:41:02,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:02,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:02,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:02,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:02,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:02,876 INFO L87 Difference]: Start difference. First operand 572 states and 923 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:02,937 INFO L93 Difference]: Finished difference Result 1128 states and 1832 transitions. [2024-12-02 07:41:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:41:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 119 [2024-12-02 07:41:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:02,943 INFO L225 Difference]: With dead ends: 1128 [2024-12-02 07:41:02,943 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 07:41:02,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:02,947 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 15 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:02,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2709 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 07:41:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 07:41:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 432 states have (on average 1.6180555555555556) internal successors, (699), 448 states have internal predecessors, (699), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 922 transitions. [2024-12-02 07:41:02,973 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 922 transitions. Word has length 119 [2024-12-02 07:41:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:02,973 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 922 transitions. [2024-12-02 07:41:02,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 922 transitions. [2024-12-02 07:41:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 07:41:02,977 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:02,977 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:02,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:41:02,977 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:02,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1450778185, now seen corresponding path program 1 times [2024-12-02 07:41:02,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:02,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014087864] [2024-12-02 07:41:02,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:03,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:03,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014087864] [2024-12-02 07:41:03,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014087864] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:03,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560164136] [2024-12-02 07:41:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:03,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:03,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:03,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:03,111 INFO L87 Difference]: Start difference. First operand 572 states and 922 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:03,164 INFO L93 Difference]: Finished difference Result 1128 states and 1830 transitions. [2024-12-02 07:41:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:41:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-12-02 07:41:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:03,169 INFO L225 Difference]: With dead ends: 1128 [2024-12-02 07:41:03,169 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 07:41:03,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:03,172 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 14 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:03,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2711 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 07:41:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 07:41:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 432 states have (on average 1.6157407407407407) internal successors, (698), 448 states have internal predecessors, (698), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 921 transitions. [2024-12-02 07:41:03,197 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 921 transitions. Word has length 120 [2024-12-02 07:41:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:03,197 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 921 transitions. [2024-12-02 07:41:03,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 921 transitions. [2024-12-02 07:41:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 07:41:03,201 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:03,201 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:03,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:41:03,201 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:03,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1514539383, now seen corresponding path program 1 times [2024-12-02 07:41:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063518247] [2024-12-02 07:41:03,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:03,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:03,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063518247] [2024-12-02 07:41:03,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063518247] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:03,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:03,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:03,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284660229] [2024-12-02 07:41:03,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:03,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:03,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:03,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:03,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:03,341 INFO L87 Difference]: Start difference. First operand 572 states and 921 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:03,389 INFO L93 Difference]: Finished difference Result 1128 states and 1828 transitions. [2024-12-02 07:41:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:41:03,390 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2024-12-02 07:41:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:03,394 INFO L225 Difference]: With dead ends: 1128 [2024-12-02 07:41:03,394 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 07:41:03,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:03,398 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 13 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:03,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2713 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 07:41:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 07:41:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 432 states have (on average 1.6134259259259258) internal successors, (697), 448 states have internal predecessors, (697), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 920 transitions. [2024-12-02 07:41:03,422 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 920 transitions. Word has length 121 [2024-12-02 07:41:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:03,422 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 920 transitions. [2024-12-02 07:41:03,422 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:03,422 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 920 transitions. [2024-12-02 07:41:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 07:41:03,425 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:03,425 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:03,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:41:03,426 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:03,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:03,426 INFO L85 PathProgramCache]: Analyzing trace with hash -368103428, now seen corresponding path program 1 times [2024-12-02 07:41:03,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:03,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379514577] [2024-12-02 07:41:03,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:03,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:03,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:03,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379514577] [2024-12-02 07:41:03,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379514577] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:03,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:03,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:03,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606639829] [2024-12-02 07:41:03,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:03,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:03,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:03,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:03,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:03,535 INFO L87 Difference]: Start difference. First operand 572 states and 920 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:03,574 INFO L93 Difference]: Finished difference Result 1128 states and 1826 transitions. [2024-12-02 07:41:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:41:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2024-12-02 07:41:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:03,578 INFO L225 Difference]: With dead ends: 1128 [2024-12-02 07:41:03,578 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 07:41:03,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:03,580 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 12 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:03,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2715 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 07:41:03,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 07:41:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 432 states have (on average 1.6111111111111112) internal successors, (696), 448 states have internal predecessors, (696), 113 states have call successors, (113), 28 states have call predecessors, (113), 26 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 07:41:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 919 transitions. [2024-12-02 07:41:03,595 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 919 transitions. Word has length 122 [2024-12-02 07:41:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:03,596 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 919 transitions. [2024-12-02 07:41:03,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:41:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 919 transitions. [2024-12-02 07:41:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 07:41:03,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:03,598 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:03,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:41:03,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:03,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2081304668, now seen corresponding path program 1 times [2024-12-02 07:41:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:03,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857802346] [2024-12-02 07:41:03,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:03,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 07:41:03,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:03,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857802346] [2024-12-02 07:41:03,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857802346] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:41:03,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878324454] [2024-12-02 07:41:03,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:03,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:03,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:41:03,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:41:03,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:41:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:04,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:41:04,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:41:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:41:04,297 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:41:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878324454] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:04,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:41:04,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 07:41:04,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717573635] [2024-12-02 07:41:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:04,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:41:04,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:04,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:41:04,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:04,299 INFO L87 Difference]: Start difference. First operand 572 states and 919 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:04,359 INFO L93 Difference]: Finished difference Result 1627 states and 2645 transitions. [2024-12-02 07:41:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:41:04,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2024-12-02 07:41:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:04,365 INFO L225 Difference]: With dead ends: 1627 [2024-12-02 07:41:04,365 INFO L226 Difference]: Without dead ends: 1073 [2024-12-02 07:41:04,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:04,369 INFO L435 NwaCegarLoop]: 1632 mSDtfsCounter, 844 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:04,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 2445 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-12-02 07:41:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1058. [2024-12-02 07:41:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 806 states have (on average 1.6228287841191067) internal successors, (1308), 837 states have internal predecessors, (1308), 201 states have call successors, (201), 51 states have call predecessors, (201), 50 states have return successors, (203), 195 states have call predecessors, (203), 198 states have call successors, (203) [2024-12-02 07:41:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1712 transitions. [2024-12-02 07:41:04,404 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1712 transitions. Word has length 123 [2024-12-02 07:41:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:04,405 INFO L471 AbstractCegarLoop]: Abstraction has 1058 states and 1712 transitions. [2024-12-02 07:41:04,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1712 transitions. [2024-12-02 07:41:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 07:41:04,408 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:04,408 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:04,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:41:04,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:04,609 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:04,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash 733275163, now seen corresponding path program 1 times [2024-12-02 07:41:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:04,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116472135] [2024-12-02 07:41:04,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:04,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 07:41:04,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:04,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116472135] [2024-12-02 07:41:04,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116472135] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:41:04,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188419068] [2024-12-02 07:41:04,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:04,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:04,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:41:04,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:41:04,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:41:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:05,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:41:05,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:41:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:41:05,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:41:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188419068] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:05,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:41:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 07:41:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990637919] [2024-12-02 07:41:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:05,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:41:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:05,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:41:05,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:05,340 INFO L87 Difference]: Start difference. First operand 1058 states and 1712 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:05,428 INFO L93 Difference]: Finished difference Result 2599 states and 4233 transitions. [2024-12-02 07:41:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:41:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2024-12-02 07:41:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:05,440 INFO L225 Difference]: With dead ends: 2599 [2024-12-02 07:41:05,440 INFO L226 Difference]: Without dead ends: 1559 [2024-12-02 07:41:05,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:05,447 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 843 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:05,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1733 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-12-02 07:41:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1511. [2024-12-02 07:41:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1153 states have (on average 1.6339982653946228) internal successors, (1884), 1199 states have internal predecessors, (1884), 286 states have call successors, (286), 71 states have call predecessors, (286), 71 states have return successors, (293), 279 states have call predecessors, (293), 283 states have call successors, (293) [2024-12-02 07:41:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2463 transitions. [2024-12-02 07:41:05,525 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2463 transitions. Word has length 124 [2024-12-02 07:41:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:05,525 INFO L471 AbstractCegarLoop]: Abstraction has 1511 states and 2463 transitions. [2024-12-02 07:41:05,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:41:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2463 transitions. [2024-12-02 07:41:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 07:41:05,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:05,532 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:05,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:41:05,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:05,733 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:05,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash 94502930, now seen corresponding path program 1 times [2024-12-02 07:41:05,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:05,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855268648] [2024-12-02 07:41:05,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:05,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:05,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855268648] [2024-12-02 07:41:05,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855268648] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:05,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:05,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:41:05,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378189987] [2024-12-02 07:41:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:05,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:41:05,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:05,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:41:05,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:41:05,929 INFO L87 Difference]: Start difference. First operand 1511 states and 2463 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 07:41:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:06,510 INFO L93 Difference]: Finished difference Result 4457 states and 7396 transitions. [2024-12-02 07:41:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:41:06,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 126 [2024-12-02 07:41:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:06,546 INFO L225 Difference]: With dead ends: 4457 [2024-12-02 07:41:06,546 INFO L226 Difference]: Without dead ends: 2964 [2024-12-02 07:41:06,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:41:06,551 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 910 mSDsluCounter, 3671 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 4692 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:06,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 4692 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:41:06,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2024-12-02 07:41:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2917. [2024-12-02 07:41:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2227 states have (on average 1.633587786259542) internal successors, (3638), 2315 states have internal predecessors, (3638), 551 states have call successors, (551), 136 states have call predecessors, (551), 138 states have return successors, (637), 543 states have call predecessors, (637), 547 states have call successors, (637) [2024-12-02 07:41:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4826 transitions. [2024-12-02 07:41:06,660 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4826 transitions. Word has length 126 [2024-12-02 07:41:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:06,660 INFO L471 AbstractCegarLoop]: Abstraction has 2917 states and 4826 transitions. [2024-12-02 07:41:06,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 07:41:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4826 transitions. [2024-12-02 07:41:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 07:41:06,664 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:06,665 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:06,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:41:06,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:06,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash 289273928, now seen corresponding path program 1 times [2024-12-02 07:41:06,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:06,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136405545] [2024-12-02 07:41:06,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:41:06,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:06,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136405545] [2024-12-02 07:41:06,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136405545] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:06,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:06,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:06,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324396832] [2024-12-02 07:41:06,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:06,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:06,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:06,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:06,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:06,739 INFO L87 Difference]: Start difference. First operand 2917 states and 4826 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:41:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:06,887 INFO L93 Difference]: Finished difference Result 5830 states and 9722 transitions. [2024-12-02 07:41:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:41:06,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-12-02 07:41:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:06,902 INFO L225 Difference]: With dead ends: 5830 [2024-12-02 07:41:06,903 INFO L226 Difference]: Without dead ends: 2931 [2024-12-02 07:41:06,915 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 [2024-12-02 07:41:06,916 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 12 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:06,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2679 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:41:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2024-12-02 07:41:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2921. [2024-12-02 07:41:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2230 states have (on average 1.6322869955156951) internal successors, (3640), 2318 states have internal predecessors, (3640), 551 states have call successors, (551), 138 states have call predecessors, (551), 139 states have return successors, (629), 542 states have call predecessors, (629), 547 states have call successors, (629) [2024-12-02 07:41:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4820 transitions. [2024-12-02 07:41:07,079 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4820 transitions. Word has length 127 [2024-12-02 07:41:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:07,079 INFO L471 AbstractCegarLoop]: Abstraction has 2921 states and 4820 transitions. [2024-12-02 07:41:07,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:41:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4820 transitions. [2024-12-02 07:41:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 07:41:07,084 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:07,085 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:07,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:41:07,085 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:07,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2087988295, now seen corresponding path program 1 times [2024-12-02 07:41:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935030936] [2024-12-02 07:41:07,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 07:41:07,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:07,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935030936] [2024-12-02 07:41:07,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935030936] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:41:07,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789249720] [2024-12-02 07:41:07,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:07,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:07,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:41:07,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:41:07,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:41:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:07,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:41:07,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:41:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 07:41:07,784 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:41:07,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789249720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:07,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:41:07,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-12-02 07:41:07,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030141420] [2024-12-02 07:41:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:07,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:41:07,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:07,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:41:07,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:41:07,786 INFO L87 Difference]: Start difference. First operand 2921 states and 4820 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 07:41:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:08,580 INFO L93 Difference]: Finished difference Result 7928 states and 13295 transitions. [2024-12-02 07:41:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:41:08,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-12-02 07:41:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:08,605 INFO L225 Difference]: With dead ends: 7928 [2024-12-02 07:41:08,605 INFO L226 Difference]: Without dead ends: 5025 [2024-12-02 07:41:08,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:41:08,620 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 781 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 4106 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:08,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 4106 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:41:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2024-12-02 07:41:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 4982. [2024-12-02 07:41:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4982 states, 3798 states have (on average 1.5850447604002107) internal successors, (6020), 3944 states have internal predecessors, (6020), 930 states have call successors, (930), 250 states have call predecessors, (930), 253 states have return successors, (1172), 917 states have call predecessors, (1172), 924 states have call successors, (1172) [2024-12-02 07:41:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 8122 transitions. [2024-12-02 07:41:08,780 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 8122 transitions. Word has length 127 [2024-12-02 07:41:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:08,780 INFO L471 AbstractCegarLoop]: Abstraction has 4982 states and 8122 transitions. [2024-12-02 07:41:08,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 07:41:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 8122 transitions. [2024-12-02 07:41:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 07:41:08,784 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:08,784 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:08,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:41:08,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 07:41:08,984 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:08,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash -665390941, now seen corresponding path program 1 times [2024-12-02 07:41:08,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:08,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918896307] [2024-12-02 07:41:08,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:08,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 07:41:09,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918896307] [2024-12-02 07:41:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918896307] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:41:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618658287] [2024-12-02 07:41:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:09,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:41:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:09,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:41:09,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:41:09,137 INFO L87 Difference]: Start difference. First operand 4982 states and 8122 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 07:41:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:09,830 INFO L93 Difference]: Finished difference Result 14879 states and 25017 transitions. [2024-12-02 07:41:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:41:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-12-02 07:41:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:09,887 INFO L225 Difference]: With dead ends: 14879 [2024-12-02 07:41:09,887 INFO L226 Difference]: Without dead ends: 9915 [2024-12-02 07:41:09,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:41:09,911 INFO L435 NwaCegarLoop]: 990 mSDtfsCounter, 903 mSDsluCounter, 3587 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 4577 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:09,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 4577 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:41:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9915 states. [2024-12-02 07:41:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9915 to 9846. [2024-12-02 07:41:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9846 states, 7508 states have (on average 1.5808470964304742) internal successors, (11869), 7794 states have internal predecessors, (11869), 1832 states have call successors, (1832), 494 states have call predecessors, (1832), 505 states have return successors, (2726), 1817 states have call predecessors, (2726), 1822 states have call successors, (2726) [2024-12-02 07:41:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 16427 transitions. [2024-12-02 07:41:10,246 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 16427 transitions. Word has length 135 [2024-12-02 07:41:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:10,246 INFO L471 AbstractCegarLoop]: Abstraction has 9846 states and 16427 transitions. [2024-12-02 07:41:10,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 07:41:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 16427 transitions. [2024-12-02 07:41:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 07:41:10,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:10,251 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:10,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:41:10,251 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:10,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash -323857701, now seen corresponding path program 1 times [2024-12-02 07:41:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:10,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749990550] [2024-12-02 07:41:10,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:41:10,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749990550] [2024-12-02 07:41:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749990550] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004181439] [2024-12-02 07:41:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:10,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:10,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:10,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:10,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:10,349 INFO L87 Difference]: Start difference. First operand 9846 states and 16427 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:41:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:10,823 INFO L93 Difference]: Finished difference Result 19746 states and 33427 transitions. [2024-12-02 07:41:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:41:10,823 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2024-12-02 07:41:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:10,884 INFO L225 Difference]: With dead ends: 19746 [2024-12-02 07:41:10,884 INFO L226 Difference]: Without dead ends: 9918 [2024-12-02 07:41:10,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:41:10,933 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 12 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:10,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2670 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:41:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2024-12-02 07:41:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9886. [2024-12-02 07:41:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9886 states, 7544 states have (on average 1.5786055143160127) internal successors, (11909), 7822 states have internal predecessors, (11909), 1832 states have call successors, (1832), 510 states have call predecessors, (1832), 509 states have return successors, (2710), 1813 states have call predecessors, (2710), 1822 states have call successors, (2710) [2024-12-02 07:41:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9886 states to 9886 states and 16451 transitions. [2024-12-02 07:41:11,267 INFO L78 Accepts]: Start accepts. Automaton has 9886 states and 16451 transitions. Word has length 136 [2024-12-02 07:41:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:11,267 INFO L471 AbstractCegarLoop]: Abstraction has 9886 states and 16451 transitions. [2024-12-02 07:41:11,268 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, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:41:11,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9886 states and 16451 transitions. [2024-12-02 07:41:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:41:11,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:11,272 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:11,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:41:11,272 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:11,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1888817380, now seen corresponding path program 1 times [2024-12-02 07:41:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998034964] [2024-12-02 07:41:11,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:11,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:41:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:11,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998034964] [2024-12-02 07:41:11,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998034964] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:41:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273498028] [2024-12-02 07:41:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:11,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:41:11,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:11,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:41:11,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:41:11,396 INFO L87 Difference]: Start difference. First operand 9886 states and 16451 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:41:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:12,359 INFO L93 Difference]: Finished difference Result 29669 states and 51595 transitions. [2024-12-02 07:41:12,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:41:12,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-12-02 07:41:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:12,464 INFO L225 Difference]: With dead ends: 29669 [2024-12-02 07:41:12,464 INFO L226 Difference]: Without dead ends: 19801 [2024-12-02 07:41:12,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:41:12,525 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 899 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:12,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 4583 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:41:12,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19801 states. [2024-12-02 07:41:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19801 to 19700. [2024-12-02 07:41:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19700 states, 15036 states have (on average 1.5750864591646714) internal successors, (23683), 15586 states have internal predecessors, (23683), 3642 states have call successors, (3642), 1014 states have call predecessors, (3642), 1021 states have return successors, (6611), 3619 states have call predecessors, (6611), 3624 states have call successors, (6611) [2024-12-02 07:41:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19700 states to 19700 states and 33936 transitions. [2024-12-02 07:41:13,317 INFO L78 Accepts]: Start accepts. Automaton has 19700 states and 33936 transitions. Word has length 145 [2024-12-02 07:41:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:13,318 INFO L471 AbstractCegarLoop]: Abstraction has 19700 states and 33936 transitions. [2024-12-02 07:41:13,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:41:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 19700 states and 33936 transitions. [2024-12-02 07:41:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:41:13,324 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:13,324 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:13,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 07:41:13,324 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:13,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:13,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1547782910, now seen corresponding path program 1 times [2024-12-02 07:41:13,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:13,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641503730] [2024-12-02 07:41:13,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 07:41:13,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:13,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641503730] [2024-12-02 07:41:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641503730] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:13,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:13,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043200255] [2024-12-02 07:41:13,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:13,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:13,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:13,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:13,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:13,426 INFO L87 Difference]: Start difference. First operand 19700 states and 33936 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:41:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:14,311 INFO L93 Difference]: Finished difference Result 39526 states and 69656 transitions. [2024-12-02 07:41:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:41:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-12-02 07:41:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:14,535 INFO L225 Difference]: With dead ends: 39526 [2024-12-02 07:41:14,535 INFO L226 Difference]: Without dead ends: 19844 [2024-12-02 07:41:14,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:41:14,660 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 11 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:14,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2670 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:41:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19844 states. [2024-12-02 07:41:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19844 to 19780. [2024-12-02 07:41:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19780 states, 15108 states have (on average 1.5728752978554408) internal successors, (23763), 15658 states have internal predecessors, (23763), 3642 states have call successors, (3642), 1030 states have call predecessors, (3642), 1029 states have return successors, (6591), 3611 states have call predecessors, (6591), 3624 states have call successors, (6591) [2024-12-02 07:41:15,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19780 states to 19780 states and 33996 transitions. [2024-12-02 07:41:15,642 INFO L78 Accepts]: Start accepts. Automaton has 19780 states and 33996 transitions. Word has length 146 [2024-12-02 07:41:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:15,642 INFO L471 AbstractCegarLoop]: Abstraction has 19780 states and 33996 transitions. [2024-12-02 07:41:15,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:41:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 19780 states and 33996 transitions. [2024-12-02 07:41:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 07:41:15,648 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:15,649 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:15,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 07:41:15,649 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:15,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash -9830481, now seen corresponding path program 1 times [2024-12-02 07:41:15,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:15,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102801881] [2024-12-02 07:41:15,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:15,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 07:41:15,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:15,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102801881] [2024-12-02 07:41:15,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102801881] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:15,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:15,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:41:15,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355888104] [2024-12-02 07:41:15,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:15,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:41:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:15,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:41:15,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:41:15,833 INFO L87 Difference]: Start difference. First operand 19780 states and 33996 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 07:41:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:17,591 INFO L93 Difference]: Finished difference Result 59477 states and 109285 transitions. [2024-12-02 07:41:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:41:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-12-02 07:41:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:17,884 INFO L225 Difference]: With dead ends: 59477 [2024-12-02 07:41:17,884 INFO L226 Difference]: Without dead ends: 39715 [2024-12-02 07:41:18,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:41:18,128 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 896 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:18,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 4560 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:41:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39715 states. [2024-12-02 07:41:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39715 to 39550. [2024-12-02 07:41:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39550 states, 30212 states have (on average 1.570402489077188) internal successors, (47445), 31306 states have internal predecessors, (47445), 7268 states have call successors, (7268), 2054 states have call predecessors, (7268), 2069 states have return successors, (16832), 7229 states have call predecessors, (16832), 7234 states have call successors, (16832) [2024-12-02 07:41:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39550 states to 39550 states and 71545 transitions. [2024-12-02 07:41:20,322 INFO L78 Accepts]: Start accepts. Automaton has 39550 states and 71545 transitions. Word has length 156 [2024-12-02 07:41:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:20,322 INFO L471 AbstractCegarLoop]: Abstraction has 39550 states and 71545 transitions. [2024-12-02 07:41:20,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 07:41:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 39550 states and 71545 transitions. [2024-12-02 07:41:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 07:41:20,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:20,327 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:20,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 07:41:20,327 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:20,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash 923671007, now seen corresponding path program 1 times [2024-12-02 07:41:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:20,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262149783] [2024-12-02 07:41:20,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:20,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 07:41:20,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:20,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262149783] [2024-12-02 07:41:20,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262149783] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:20,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:41:20,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:41:20,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096236654] [2024-12-02 07:41:20,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:20,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:41:20,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:20,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:41:20,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:41:20,436 INFO L87 Difference]: Start difference. First operand 39550 states and 71545 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 07:41:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:22,203 INFO L93 Difference]: Finished difference Result 79402 states and 148817 transitions. [2024-12-02 07:41:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:41:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-12-02 07:41:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:22,489 INFO L225 Difference]: With dead ends: 79402 [2024-12-02 07:41:22,489 INFO L226 Difference]: Without dead ends: 39870 [2024-12-02 07:41:22,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:41:22,799 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 10 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:22,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2670 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:41:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39870 states. [2024-12-02 07:41:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39870 to 39742. [2024-12-02 07:41:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39742 states, 30388 states have (on average 1.5676253784388574) internal successors, (47637), 31482 states have internal predecessors, (47637), 7268 states have call successors, (7268), 2086 states have call predecessors, (7268), 2085 states have return successors, (16816), 7213 states have call predecessors, (16816), 7234 states have call successors, (16816) [2024-12-02 07:41:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39742 states to 39742 states and 71721 transitions. [2024-12-02 07:41:24,490 INFO L78 Accepts]: Start accepts. Automaton has 39742 states and 71721 transitions. Word has length 157 [2024-12-02 07:41:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:24,490 INFO L471 AbstractCegarLoop]: Abstraction has 39742 states and 71721 transitions. [2024-12-02 07:41:24,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 07:41:24,490 INFO L276 IsEmpty]: Start isEmpty. Operand 39742 states and 71721 transitions. [2024-12-02 07:41:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 07:41:24,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:24,498 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:24,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:41:24,498 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:24,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash -255852640, now seen corresponding path program 1 times [2024-12-02 07:41:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354127395] [2024-12-02 07:41:24,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:24,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 07:41:24,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:24,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354127395] [2024-12-02 07:41:24,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354127395] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:41:24,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994077250] [2024-12-02 07:41:24,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:24,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:24,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:41:24,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:41:24,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:41:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:25,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:41:25,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:41:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-12-02 07:41:25,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:41:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994077250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:41:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 07:41:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224349682] [2024-12-02 07:41:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:25,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:41:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:25,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:41:25,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:25,179 INFO L87 Difference]: Start difference. First operand 39742 states and 71721 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:41:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:28,480 INFO L93 Difference]: Finished difference Result 118063 states and 216639 transitions. [2024-12-02 07:41:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:41:28,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2024-12-02 07:41:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:28,879 INFO L225 Difference]: With dead ends: 118063 [2024-12-02 07:41:28,880 INFO L226 Difference]: Without dead ends: 78370 [2024-12-02 07:41:29,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:41:29,111 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 905 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:29,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1824 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:41:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78370 states. [2024-12-02 07:41:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78370 to 77805. [2024-12-02 07:41:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77805 states, 59686 states have (on average 1.5709546627349797) internal successors, (93764), 61759 states have internal predecessors, (93764), 14049 states have call successors, (14049), 4038 states have call predecessors, (14049), 4069 states have return successors, (33271), 14055 states have call predecessors, (33271), 13983 states have call successors, (33271) [2024-12-02 07:41:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77805 states to 77805 states and 141084 transitions. [2024-12-02 07:41:32,719 INFO L78 Accepts]: Start accepts. Automaton has 77805 states and 141084 transitions. Word has length 168 [2024-12-02 07:41:32,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:32,720 INFO L471 AbstractCegarLoop]: Abstraction has 77805 states and 141084 transitions. [2024-12-02 07:41:32,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:41:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 77805 states and 141084 transitions. [2024-12-02 07:41:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 07:41:32,727 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:32,727 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:41:32,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:41:32,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:32,928 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:32,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:32,928 INFO L85 PathProgramCache]: Analyzing trace with hash -842658654, now seen corresponding path program 1 times [2024-12-02 07:41:32,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:32,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502420875] [2024-12-02 07:41:32,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:32,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 07:41:33,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:33,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502420875] [2024-12-02 07:41:33,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502420875] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:41:33,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951153261] [2024-12-02 07:41:33,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:33,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:33,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:41:33,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:41:33,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:41:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:33,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:41:33,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:41:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 07:41:33,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:41:33,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951153261] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:33,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:41:33,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-02 07:41:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719582230] [2024-12-02 07:41:33,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:33,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:41:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:33,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:41:33,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:41:33,552 INFO L87 Difference]: Start difference. First operand 77805 states and 141084 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 07:41:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:41:39,158 INFO L93 Difference]: Finished difference Result 191315 states and 371571 transitions. [2024-12-02 07:41:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:41:39,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 168 [2024-12-02 07:41:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:41:39,813 INFO L225 Difference]: With dead ends: 191315 [2024-12-02 07:41:39,813 INFO L226 Difference]: Without dead ends: 113480 [2024-12-02 07:41:40,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:41:40,756 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 903 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 4197 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:41:40,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 4197 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:41:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113480 states. [2024-12-02 07:41:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113480 to 113272. [2024-12-02 07:41:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113272 states, 87013 states have (on average 1.551469320676221) internal successors, (134998), 89782 states have internal predecessors, (134998), 20081 states have call successors, (20081), 6178 states have call predecessors, (20081), 6177 states have return successors, (55313), 19959 states have call predecessors, (55313), 19999 states have call successors, (55313) [2024-12-02 07:41:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113272 states to 113272 states and 210392 transitions. [2024-12-02 07:41:45,861 INFO L78 Accepts]: Start accepts. Automaton has 113272 states and 210392 transitions. Word has length 168 [2024-12-02 07:41:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:41:45,861 INFO L471 AbstractCegarLoop]: Abstraction has 113272 states and 210392 transitions. [2024-12-02 07:41:45,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 07:41:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 113272 states and 210392 transitions. [2024-12-02 07:41:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 07:41:45,879 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:41:45,879 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-12-02 07:41:45,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:41:46,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 07:41:46,079 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:41:46,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:41:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2130908625, now seen corresponding path program 1 times [2024-12-02 07:41:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:41:46,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212760406] [2024-12-02 07:41:46,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:46,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:41:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-12-02 07:41:46,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:41:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212760406] [2024-12-02 07:41:46,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212760406] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:41:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49621417] [2024-12-02 07:41:46,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:41:46,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:41:46,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:41:46,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:41:46,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:41:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:41:47,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:41:47,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:41:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 07:41:47,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:41:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49621417] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:41:47,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:41:47,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-12-02 07:41:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830397895] [2024-12-02 07:41:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:41:47,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:41:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:41:47,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:41:47,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:41:47,159 INFO L87 Difference]: Start difference. First operand 113272 states and 210392 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 07:42:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:01,838 INFO L93 Difference]: Finished difference Result 307332 states and 623065 transitions. [2024-12-02 07:42:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:42:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 203 [2024-12-02 07:42:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:03,335 INFO L225 Difference]: With dead ends: 307332 [2024-12-02 07:42:03,335 INFO L226 Difference]: Without dead ends: 188238 [2024-12-02 07:42:04,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:42:04,505 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 2461 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 4997 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 5859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 4997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:04,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 2303 Invalid, 5859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 4997 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 07:42:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188238 states. [2024-12-02 07:42:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188238 to 170294. [2024-12-02 07:42:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170294 states, 130680 states have (on average 1.5448423630241812) internal successors, (201880), 134848 states have internal predecessors, (201880), 30198 states have call successors, (30198), 8984 states have call predecessors, (30198), 9415 states have return successors, (94134), 30105 states have call predecessors, (94134), 30084 states have call successors, (94134) [2024-12-02 07:42:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170294 states to 170294 states and 326212 transitions. [2024-12-02 07:42:14,699 INFO L78 Accepts]: Start accepts. Automaton has 170294 states and 326212 transitions. Word has length 203 [2024-12-02 07:42:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:14,699 INFO L471 AbstractCegarLoop]: Abstraction has 170294 states and 326212 transitions. [2024-12-02 07:42:14,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 07:42:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 170294 states and 326212 transitions. [2024-12-02 07:42:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-12-02 07:42:14,710 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:14,710 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 07:42:14,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:42:14,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 07:42:14,911 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:14,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1526209307, now seen corresponding path program 1 times [2024-12-02 07:42:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:14,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499116210] [2024-12-02 07:42:14,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:14,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-12-02 07:42:15,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:15,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499116210] [2024-12-02 07:42:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499116210] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:42:15,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974001023] [2024-12-02 07:42:15,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:15,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:42:15,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:42:15,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:42:15,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:42:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:15,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:42:15,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:42:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-12-02 07:42:15,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:42:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974001023] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:42:15,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:42:15,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 07:42:15,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385618298] [2024-12-02 07:42:15,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:42:15,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:42:15,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:15,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:42:15,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:42:15,559 INFO L87 Difference]: Start difference. First operand 170294 states and 326212 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 07:42:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:27,895 INFO L93 Difference]: Finished difference Result 345178 states and 724534 transitions. [2024-12-02 07:42:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:42:27,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 237 [2024-12-02 07:42:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:29,405 INFO L225 Difference]: With dead ends: 345178 [2024-12-02 07:42:29,405 INFO L226 Difference]: Without dead ends: 174902 [2024-12-02 07:42:31,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:42:31,418 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 838 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:31,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2263 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:42:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174902 states. [2024-12-02 07:42:37,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174902 to 174902. [2024-12-02 07:42:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174902 states, 134712 states have (on average 1.5499138903735377) internal successors, (208792), 138880 states have internal predecessors, (208792), 30198 states have call successors, (30198), 9560 states have call predecessors, (30198), 9991 states have return successors, (94435), 30105 states have call predecessors, (94435), 30084 states have call successors, (94435) [2024-12-02 07:42:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174902 states to 174902 states and 333425 transitions. [2024-12-02 07:42:40,546 INFO L78 Accepts]: Start accepts. Automaton has 174902 states and 333425 transitions. Word has length 237 [2024-12-02 07:42:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:40,547 INFO L471 AbstractCegarLoop]: Abstraction has 174902 states and 333425 transitions. [2024-12-02 07:42:40,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 07:42:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 174902 states and 333425 transitions. [2024-12-02 07:42:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-12-02 07:42:40,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:40,563 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 07:42:40,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:42:40,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 07:42:40,764 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:40,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash -345893931, now seen corresponding path program 1 times [2024-12-02 07:42:40,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:40,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211526444] [2024-12-02 07:42:40,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:40,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-12-02 07:42:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211526444] [2024-12-02 07:42:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211526444] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:42:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886060283] [2024-12-02 07:42:41,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:41,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:42:41,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:42:41,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:42:41,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:42:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:41,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:42:41,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:42:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 07:42:41,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:42:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886060283] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:42:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:42:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 07:42:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805664668] [2024-12-02 07:42:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:42:41,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:42:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:41,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:42:41,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:42:41,602 INFO L87 Difference]: Start difference. First operand 174902 states and 333425 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:42:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:53,293 INFO L93 Difference]: Finished difference Result 354394 states and 738080 transitions. [2024-12-02 07:42:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:42:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 246 [2024-12-02 07:42:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:54,649 INFO L225 Difference]: With dead ends: 354394 [2024-12-02 07:42:54,649 INFO L226 Difference]: Without dead ends: 179510 [2024-12-02 07:42:56,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:42:56,908 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 822 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:56,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 2260 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:42:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179510 states. [2024-12-02 07:43:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179510 to 179510. [2024-12-02 07:43:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179510 states, 138744 states have (on average 1.5546906532895117) internal successors, (215704), 142912 states have internal predecessors, (215704), 30198 states have call successors, (30198), 10136 states have call predecessors, (30198), 10567 states have return successors, (94736), 30105 states have call predecessors, (94736), 30084 states have call successors, (94736) [2024-12-02 07:43:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179510 states to 179510 states and 340638 transitions. [2024-12-02 07:43:06,037 INFO L78 Accepts]: Start accepts. Automaton has 179510 states and 340638 transitions. Word has length 246 [2024-12-02 07:43:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:06,037 INFO L471 AbstractCegarLoop]: Abstraction has 179510 states and 340638 transitions. [2024-12-02 07:43:06,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:43:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 179510 states and 340638 transitions. [2024-12-02 07:43:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-12-02 07:43:06,047 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:06,047 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 07:43:06,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:43:06,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 07:43:06,248 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:06,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash 585616801, now seen corresponding path program 1 times [2024-12-02 07:43:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122701908] [2024-12-02 07:43:06,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-12-02 07:43:06,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:06,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122701908] [2024-12-02 07:43:06,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122701908] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:43:06,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322522753] [2024-12-02 07:43:06,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:06,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:43:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:43:06,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:43:06,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e012ccb-f543-4e3e-88c6-907c15e5467a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:43:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:07,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:43:07,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:43:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-12-02 07:43:07,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:43:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322522753] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:07,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:43:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 07:43:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726777761] [2024-12-02 07:43:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:07,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:43:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:07,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:43:07,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:43:07,196 INFO L87 Difference]: Start difference. First operand 179510 states and 340638 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:43:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:18,380 INFO L93 Difference]: Finished difference Result 363610 states and 750734 transitions. [2024-12-02 07:43:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:43:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 250 [2024-12-02 07:43:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:20,055 INFO L225 Difference]: With dead ends: 363610 [2024-12-02 07:43:20,055 INFO L226 Difference]: Without dead ends: 184118 [2024-12-02 07:43:22,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:43:22,200 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 813 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:22,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 2257 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:43:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184118 states.