./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:42:42,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:42:42,929 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:42:42,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:42:42,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:42:42,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:42:42,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:42:42,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:42:42,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:42:42,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:42:42,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:42:42,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:42:42,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:42:42,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:42:42,990 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:42:42,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:42:42,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:42:42,992 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:42:42,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:42:42,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:42:42,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:42:42,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:42:42,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:42:42,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:42:42,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:42:42,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:42:42,994 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:42:42,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:42:42,994 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:42:42,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:42,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:42,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:42,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:42,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:42:42,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:42,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:42,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:42,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:42,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:42:42,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:42:42,995 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:42:42,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:42:42,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:42:42,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:42:42,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:42:42,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:42:42,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:42:42,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:42:42,997 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_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 [2024-11-28 04:42:43,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:42:43,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:42:43,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:42:43,335 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:42:43,336 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:42:43,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2024-11-28 04:42:46,295 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/data/3254baf74/d5652d2595944e2fb781dbe075dd74be/FLAG6389a9367 [2024-11-28 04:42:46,709 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:42:46,710 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2024-11-28 04:42:46,742 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/data/3254baf74/d5652d2595944e2fb781dbe075dd74be/FLAG6389a9367 [2024-11-28 04:42:46,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/data/3254baf74/d5652d2595944e2fb781dbe075dd74be [2024-11-28 04:42:46,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:42:46,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:42:46,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:46,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:42:46,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:42:46,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:46" (1/1) ... [2024-11-28 04:42:46,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22105436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46, skipping insertion in model container [2024-11-28 04:42:46,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:46" (1/1) ... [2024-11-28 04:42:46,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:42:47,136 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_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2024-11-28 04:42:47,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:47,505 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:42:47,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-28 04:42:47,516 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [57] [2024-11-28 04:42:47,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [730] [2024-11-28 04:42:47,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [1096] [2024-11-28 04:42:47,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1282] [2024-11-28 04:42:47,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2778] [2024-11-28 04:42:47,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2897] [2024-11-28 04:42:47,518 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2989] [2024-11-28 04:42:47,518 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3027] [2024-11-28 04:42:47,518 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3043] [2024-11-28 04:42:47,524 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_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2024-11-28 04:42:47,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:47,732 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:42:47,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47 WrapperNode [2024-11-28 04:42:47,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:47,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:47,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:42:47,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:42:47,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,853 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 804 [2024-11-28 04:42:47,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:47,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:42:47,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:42:47,854 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:42:47,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,922 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 04:42:47,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,943 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:42:47,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:42:47,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:42:47,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:42:47,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (1/1) ... [2024-11-28 04:42:47,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:48,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:48,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:42:48,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:42:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-28 04:42:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-28 04:42:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:42:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 04:42:48,098 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 04:42:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-28 04:42:48,099 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-28 04:42:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 04:42:48,099 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 04:42:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 04:42:48,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 04:42:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 04:42:48,100 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 04:42:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 04:42:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 04:42:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 04:42:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 04:42:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-28 04:42:48,103 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-28 04:42:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 04:42:48,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 04:42:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 04:42:48,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 04:42:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 04:42:48,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 04:42:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 04:42:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 04:42:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 04:42:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 04:42:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 04:42:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:42:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:42:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:42:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:42:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:42:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:42:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:42:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:42:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:42:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 04:42:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 04:42:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 04:42:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 04:42:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 04:42:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 04:42:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2024-11-28 04:42:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2024-11-28 04:42:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 04:42:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 04:42:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 04:42:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 04:42:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 04:42:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 04:42:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:42:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:42:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 04:42:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 04:42:48,346 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:42:48,349 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:42:49,860 INFO L? ?]: Removed 429 outVars from TransFormulas that were not future-live. [2024-11-28 04:42:49,861 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:42:49,898 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:42:49,904 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:42:49,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:49 BoogieIcfgContainer [2024-11-28 04:42:49,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:42:49,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:42:49,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:42:49,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:42:49,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:42:46" (1/3) ... [2024-11-28 04:42:49,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dfe97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:49, skipping insertion in model container [2024-11-28 04:42:49,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:47" (2/3) ... [2024-11-28 04:42:49,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dfe97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:49, skipping insertion in model container [2024-11-28 04:42:49,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:49" (3/3) ... [2024-11-28 04:42:49,920 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2024-11-28 04:42:49,937 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:42:49,940 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product18.cil.c that has 24 procedures, 547 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:42:50,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:42:50,051 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;@6d561ec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:42:50,052 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:42:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 547 states, 428 states have (on average 1.7032710280373833) internal successors, (729), 451 states have internal predecessors, (729), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 04:42:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:42:50,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:50,078 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:50,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:50,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash 897280685, now seen corresponding path program 1 times [2024-11-28 04:42:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:50,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839265581] [2024-11-28 04:42:50,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:50,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:42:50,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:50,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839265581] [2024-11-28 04:42:50,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839265581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:50,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881942138] [2024-11-28 04:42:50,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:50,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:50,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:50,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:50,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:42:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:51,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:42:51,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:42:51,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881942138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:51,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-28 04:42:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088960957] [2024-11-28 04:42:51,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:51,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:42:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:51,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:42:51,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:51,478 INFO L87 Difference]: Start difference. First operand has 547 states, 428 states have (on average 1.7032710280373833) internal successors, (729), 451 states have internal predecessors, (729), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-28 04:42:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:51,552 INFO L93 Difference]: Finished difference Result 568 states and 947 transitions. [2024-11-28 04:42:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:42:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2024-11-28 04:42:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:51,578 INFO L225 Difference]: With dead ends: 568 [2024-11-28 04:42:51,578 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:42:51,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:51,587 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:51,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:42:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:42:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.7014218009478672) internal successors, (718), 443 states have internal predecessors, (718), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 04:42:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 901 transitions. [2024-11-28 04:42:51,690 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 901 transitions. Word has length 79 [2024-11-28 04:42:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:51,694 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 901 transitions. [2024-11-28 04:42:51,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-28 04:42:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 901 transitions. [2024-11-28 04:42:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 04:42:51,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:51,705 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:51,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:42:51,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:42:51,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:51,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash -388009895, now seen corresponding path program 1 times [2024-11-28 04:42:51,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679947576] [2024-11-28 04:42:51,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:42:52,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:52,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679947576] [2024-11-28 04:42:52,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679947576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:52,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261084412] [2024-11-28 04:42:52,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:52,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:52,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:52,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:52,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:42:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:52,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:52,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:42:52,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:52,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261084412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:52,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:52,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139620498] [2024-11-28 04:42:52,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:52,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:52,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:52,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:52,912 INFO L87 Difference]: Start difference. First operand 539 states and 901 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:53,051 INFO L93 Difference]: Finished difference Result 1069 states and 1794 transitions. [2024-11-28 04:42:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:53,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2024-11-28 04:42:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:53,062 INFO L225 Difference]: With dead ends: 1069 [2024-11-28 04:42:53,062 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:42:53,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:53,071 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 5 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:53,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2661 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:42:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:42:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6990521327014219) internal successors, (717), 443 states have internal predecessors, (717), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 04:42:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 900 transitions. [2024-11-28 04:42:53,133 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 900 transitions. Word has length 80 [2024-11-28 04:42:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:53,133 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 900 transitions. [2024-11-28 04:42:53,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 900 transitions. [2024-11-28 04:42:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:42:53,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:53,139 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:53,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:42:53,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:53,343 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:53,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1837406513, now seen corresponding path program 1 times [2024-11-28 04:42:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:53,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784839074] [2024-11-28 04:42:53,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:53,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:42:53,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:53,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784839074] [2024-11-28 04:42:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784839074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564853447] [2024-11-28 04:42:53,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:53,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:53,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:53,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:53,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:42:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:54,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:54,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:42:54,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:54,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564853447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:54,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:54,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:54,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389171346] [2024-11-28 04:42:54,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:54,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:54,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:54,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:54,085 INFO L87 Difference]: Start difference. First operand 539 states and 900 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:54,200 INFO L93 Difference]: Finished difference Result 1069 states and 1792 transitions. [2024-11-28 04:42:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:54,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2024-11-28 04:42:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:54,209 INFO L225 Difference]: With dead ends: 1069 [2024-11-28 04:42:54,210 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:42:54,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:54,214 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 4 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:54,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2661 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:42:54,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:42:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6966824644549763) internal successors, (716), 443 states have internal predecessors, (716), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 04:42:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 899 transitions. [2024-11-28 04:42:54,261 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 899 transitions. Word has length 82 [2024-11-28 04:42:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:54,261 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 899 transitions. [2024-11-28 04:42:54,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 899 transitions. [2024-11-28 04:42:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:42:54,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:54,265 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:54,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:42:54,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:54,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:54,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1877382681, now seen corresponding path program 1 times [2024-11-28 04:42:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67675899] [2024-11-28 04:42:54,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:42:54,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:54,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67675899] [2024-11-28 04:42:54,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67675899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:54,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389830553] [2024-11-28 04:42:54,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:54,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:54,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:54,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:42:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:55,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:55,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:42:55,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389830553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:55,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:55,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:55,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156847697] [2024-11-28 04:42:55,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:55,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:55,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:55,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:55,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:55,171 INFO L87 Difference]: Start difference. First operand 539 states and 899 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:55,299 INFO L93 Difference]: Finished difference Result 1076 states and 1799 transitions. [2024-11-28 04:42:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:55,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-11-28 04:42:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:55,307 INFO L225 Difference]: With dead ends: 1076 [2024-11-28 04:42:55,307 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 04:42:55,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:55,313 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 13 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:55,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2658 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 04:42:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 04:42:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.6930232558139535) internal successors, (728), 451 states have internal predecessors, (728), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 04:42:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 911 transitions. [2024-11-28 04:42:55,342 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 911 transitions. Word has length 84 [2024-11-28 04:42:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:55,343 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 911 transitions. [2024-11-28 04:42:55,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 911 transitions. [2024-11-28 04:42:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:42:55,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:55,345 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:55,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:55,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 04:42:55,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:55,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:55,546 INFO L85 PathProgramCache]: Analyzing trace with hash 643446086, now seen corresponding path program 1 times [2024-11-28 04:42:55,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:55,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368973681] [2024-11-28 04:42:55,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:55,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:42:55,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368973681] [2024-11-28 04:42:55,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368973681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:55,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106669977] [2024-11-28 04:42:55,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:55,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:55,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:55,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:55,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:42:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:56,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:56,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:42:56,183 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106669977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:56,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:56,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084501174] [2024-11-28 04:42:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:56,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:56,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:56,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:56,185 INFO L87 Difference]: Start difference. First operand 548 states and 911 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:56,278 INFO L93 Difference]: Finished difference Result 1078 states and 1800 transitions. [2024-11-28 04:42:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2024-11-28 04:42:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:56,284 INFO L225 Difference]: With dead ends: 1078 [2024-11-28 04:42:56,285 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 04:42:56,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:56,289 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 11 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:56,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2658 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 04:42:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 04:42:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.6906976744186046) internal successors, (727), 451 states have internal predecessors, (727), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 04:42:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 910 transitions. [2024-11-28 04:42:56,337 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 910 transitions. Word has length 85 [2024-11-28 04:42:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:56,338 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 910 transitions. [2024-11-28 04:42:56,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 910 transitions. [2024-11-28 04:42:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:42:56,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:56,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:56,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:42:56,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:56,545 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:56,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:56,546 INFO L85 PathProgramCache]: Analyzing trace with hash 568065589, now seen corresponding path program 1 times [2024-11-28 04:42:56,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:56,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425290034] [2024-11-28 04:42:56,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:42:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425290034] [2024-11-28 04:42:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425290034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005868282] [2024-11-28 04:42:56,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:56,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:56,743 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:56,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:42:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:57,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:57,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:42:57,161 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:57,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005868282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:57,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:57,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:57,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249048569] [2024-11-28 04:42:57,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:57,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:57,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:57,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:57,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:57,162 INFO L87 Difference]: Start difference. First operand 548 states and 910 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:57,248 INFO L93 Difference]: Finished difference Result 1078 states and 1799 transitions. [2024-11-28 04:42:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2024-11-28 04:42:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:57,254 INFO L225 Difference]: With dead ends: 1078 [2024-11-28 04:42:57,254 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 04:42:57,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:57,258 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 10 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:57,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2658 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 04:42:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 04:42:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 430 states have (on average 1.6883720930232557) internal successors, (726), 451 states have internal predecessors, (726), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 04:42:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 909 transitions. [2024-11-28 04:42:57,293 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 909 transitions. Word has length 86 [2024-11-28 04:42:57,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:57,293 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 909 transitions. [2024-11-28 04:42:57,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 909 transitions. [2024-11-28 04:42:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:42:57,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:57,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:57,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:42:57,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:57,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:57,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2048185762, now seen corresponding path program 1 times [2024-11-28 04:42:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:57,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089966725] [2024-11-28 04:42:57,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:42:57,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:57,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089966725] [2024-11-28 04:42:57,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089966725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:57,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730849414] [2024-11-28 04:42:57,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:57,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:57,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:57,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:57,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:42:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:58,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:42:58,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:58,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:58,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730849414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:58,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:58,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 04:42:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668125758] [2024-11-28 04:42:58,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:58,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:42:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:58,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:42:58,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:42:58,230 INFO L87 Difference]: Start difference. First operand 548 states and 909 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:42:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:58,371 INFO L93 Difference]: Finished difference Result 1097 states and 1829 transitions. [2024-11-28 04:42:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:42:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2024-11-28 04:42:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:58,378 INFO L225 Difference]: With dead ends: 1097 [2024-11-28 04:42:58,378 INFO L226 Difference]: Without dead ends: 571 [2024-11-28 04:42:58,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:42:58,382 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 100 mSDsluCounter, 4359 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5248 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:58,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5248 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-28 04:42:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 567. [2024-11-28 04:42:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 446 states have (on average 1.6860986547085202) internal successors, (752), 469 states have internal predecessors, (752), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2024-11-28 04:42:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 940 transitions. [2024-11-28 04:42:58,416 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 940 transitions. Word has length 87 [2024-11-28 04:42:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:58,417 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 940 transitions. [2024-11-28 04:42:58,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:42:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 940 transitions. [2024-11-28 04:42:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:42:58,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:58,419 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:58,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:42:58,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:58,620 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:58,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1292552639, now seen corresponding path program 1 times [2024-11-28 04:42:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:58,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011436577] [2024-11-28 04:42:58,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:42:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011436577] [2024-11-28 04:42:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011436577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597433886] [2024-11-28 04:42:58,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:58,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:58,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:58,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:42:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:59,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:59,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:59,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:59,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597433886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:59,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:59,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:59,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860361479] [2024-11-28 04:42:59,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:59,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:59,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:59,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:59,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:59,172 INFO L87 Difference]: Start difference. First operand 567 states and 940 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:59,375 INFO L93 Difference]: Finished difference Result 1153 states and 1930 transitions. [2024-11-28 04:42:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2024-11-28 04:42:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:59,381 INFO L225 Difference]: With dead ends: 1153 [2024-11-28 04:42:59,381 INFO L226 Difference]: Without dead ends: 582 [2024-11-28 04:42:59,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:59,385 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 76 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:59,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2549 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-28 04:42:59,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2024-11-28 04:42:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 446 states have (on average 1.6748878923766817) internal successors, (747), 469 states have internal predecessors, (747), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2024-11-28 04:42:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 935 transitions. [2024-11-28 04:42:59,422 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 935 transitions. Word has length 87 [2024-11-28 04:42:59,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:59,423 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 935 transitions. [2024-11-28 04:42:59,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:42:59,423 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 935 transitions. [2024-11-28 04:42:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:42:59,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:59,426 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:59,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:59,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:59,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:59,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1651639801, now seen corresponding path program 1 times [2024-11-28 04:42:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509631283] [2024-11-28 04:42:59,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:42:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509631283] [2024-11-28 04:42:59,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509631283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711515483] [2024-11-28 04:42:59,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:59,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:59,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:59,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:59,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:43:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:00,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:43:00,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:00,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:00,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711515483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:00,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:43:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831505635] [2024-11-28 04:43:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:00,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:00,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:00,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:00,182 INFO L87 Difference]: Start difference. First operand 567 states and 935 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:00,355 INFO L93 Difference]: Finished difference Result 1153 states and 1920 transitions. [2024-11-28 04:43:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:43:00,356 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2024-11-28 04:43:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:00,362 INFO L225 Difference]: With dead ends: 1153 [2024-11-28 04:43:00,362 INFO L226 Difference]: Without dead ends: 582 [2024-11-28 04:43:00,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:00,366 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 75 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:00,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2549 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-28 04:43:00,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2024-11-28 04:43:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 446 states have (on average 1.663677130044843) internal successors, (742), 469 states have internal predecessors, (742), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2024-11-28 04:43:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 930 transitions. [2024-11-28 04:43:00,398 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 930 transitions. Word has length 89 [2024-11-28 04:43:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:00,398 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 930 transitions. [2024-11-28 04:43:00,398 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 930 transitions. [2024-11-28 04:43:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:43:00,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:00,401 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:00,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:43:00,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:00,601 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:00,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1076982495, now seen corresponding path program 1 times [2024-11-28 04:43:00,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:00,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649607982] [2024-11-28 04:43:00,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:43:00,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:00,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649607982] [2024-11-28 04:43:00,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649607982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:00,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152222034] [2024-11-28 04:43:00,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:00,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:00,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:00,716 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:00,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:43:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:01,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:43:01,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:01,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152222034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:01,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:01,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:43:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146817860] [2024-11-28 04:43:01,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:01,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:01,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:01,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:01,120 INFO L87 Difference]: Start difference. First operand 567 states and 930 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:01,342 INFO L93 Difference]: Finished difference Result 1204 states and 1992 transitions. [2024-11-28 04:43:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:01,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-11-28 04:43:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:01,349 INFO L225 Difference]: With dead ends: 1204 [2024-11-28 04:43:01,349 INFO L226 Difference]: Without dead ends: 663 [2024-11-28 04:43:01,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:01,353 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 130 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:01,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2580 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-28 04:43:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 618. [2024-11-28 04:43:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 496 states have (on average 1.6673387096774193) internal successors, (827), 519 states have internal predecessors, (827), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2024-11-28 04:43:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1014 transitions. [2024-11-28 04:43:01,384 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1014 transitions. Word has length 91 [2024-11-28 04:43:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:01,385 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1014 transitions. [2024-11-28 04:43:01,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1014 transitions. [2024-11-28 04:43:01,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:43:01,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:01,387 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:01,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:01,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:43:01,588 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:01,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash -454166065, now seen corresponding path program 1 times [2024-11-28 04:43:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618468964] [2024-11-28 04:43:01,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618468964] [2024-11-28 04:43:01,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618468964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219255571] [2024-11-28 04:43:01,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:01,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:01,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:01,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:43:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:02,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:43:02,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:02,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:02,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219255571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:02,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:02,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 04:43:02,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863852355] [2024-11-28 04:43:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:02,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:02,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:02,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:43:02,289 INFO L87 Difference]: Start difference. First operand 618 states and 1014 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:02,502 INFO L93 Difference]: Finished difference Result 1166 states and 1921 transitions. [2024-11-28 04:43:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:43:02,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2024-11-28 04:43:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:02,510 INFO L225 Difference]: With dead ends: 1166 [2024-11-28 04:43:02,510 INFO L226 Difference]: Without dead ends: 640 [2024-11-28 04:43:02,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:43:02,514 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 113 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:02,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5994 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-28 04:43:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 618. [2024-11-28 04:43:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 496 states have (on average 1.6673387096774193) internal successors, (827), 519 states have internal predecessors, (827), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2024-11-28 04:43:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1014 transitions. [2024-11-28 04:43:02,546 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1014 transitions. Word has length 92 [2024-11-28 04:43:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:02,546 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1014 transitions. [2024-11-28 04:43:02,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1014 transitions. [2024-11-28 04:43:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:43:02,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:02,549 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:02,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:43:02,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:43:02,750 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:02,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash -948168529, now seen corresponding path program 1 times [2024-11-28 04:43:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:02,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361409416] [2024-11-28 04:43:02,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:43:02,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:02,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361409416] [2024-11-28 04:43:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361409416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:02,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746332063] [2024-11-28 04:43:02,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:02,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:02,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:02,859 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:02,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:43:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:03,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:43:03,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:03,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:03,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746332063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:03,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:03,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:43:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527525055] [2024-11-28 04:43:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:03,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:03,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:03,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:03,281 INFO L87 Difference]: Start difference. First operand 618 states and 1014 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:03,541 INFO L93 Difference]: Finished difference Result 1207 states and 1993 transitions. [2024-11-28 04:43:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:03,542 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-11-28 04:43:03,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:03,548 INFO L225 Difference]: With dead ends: 1207 [2024-11-28 04:43:03,548 INFO L226 Difference]: Without dead ends: 651 [2024-11-28 04:43:03,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:03,552 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 124 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:03,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2553 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-28 04:43:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 618. [2024-11-28 04:43:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 496 states have (on average 1.657258064516129) internal successors, (822), 519 states have internal predecessors, (822), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2024-11-28 04:43:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1009 transitions. [2024-11-28 04:43:03,587 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1009 transitions. Word has length 92 [2024-11-28 04:43:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:03,587 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1009 transitions. [2024-11-28 04:43:03,587 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1009 transitions. [2024-11-28 04:43:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:43:03,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:03,590 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:03,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:43:03,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:43:03,791 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:03,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 412886160, now seen corresponding path program 1 times [2024-11-28 04:43:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580877975] [2024-11-28 04:43:03,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580877975] [2024-11-28 04:43:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580877975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60952674] [2024-11-28 04:43:03,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:03,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:03,943 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:03,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:43:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:04,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:43:04,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:04,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60952674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:04,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:04,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 04:43:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037936503] [2024-11-28 04:43:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:04,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:43:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:04,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:43:04,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:04,430 INFO L87 Difference]: Start difference. First operand 618 states and 1009 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:04,557 INFO L93 Difference]: Finished difference Result 1101 states and 1813 transitions. [2024-11-28 04:43:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:43:04,558 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2024-11-28 04:43:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:04,564 INFO L225 Difference]: With dead ends: 1101 [2024-11-28 04:43:04,564 INFO L226 Difference]: Without dead ends: 642 [2024-11-28 04:43:04,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:04,569 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 86 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:04,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5213 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-28 04:43:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 637. [2024-11-28 04:43:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.65625) internal successors, (848), 537 states have internal predecessors, (848), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-28 04:43:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1039 transitions. [2024-11-28 04:43:04,601 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1039 transitions. Word has length 92 [2024-11-28 04:43:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:04,601 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1039 transitions. [2024-11-28 04:43:04,601 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1039 transitions. [2024-11-28 04:43:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:43:04,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:04,605 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:04,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:04,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:43:04,806 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:04,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash 625216493, now seen corresponding path program 1 times [2024-11-28 04:43:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304425535] [2024-11-28 04:43:04,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:04,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:43:04,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304425535] [2024-11-28 04:43:04,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304425535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:04,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173390698] [2024-11-28 04:43:04,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:04,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:04,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:04,905 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:04,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:43:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:05,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:43:05,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:05,362 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173390698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:05,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:05,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 04:43:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855803870] [2024-11-28 04:43:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:05,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:43:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:05,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:43:05,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:05,366 INFO L87 Difference]: Start difference. First operand 637 states and 1039 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:05,490 INFO L93 Difference]: Finished difference Result 1131 states and 1864 transitions. [2024-11-28 04:43:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:43:05,491 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-11-28 04:43:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:05,497 INFO L225 Difference]: With dead ends: 1131 [2024-11-28 04:43:05,498 INFO L226 Difference]: Without dead ends: 672 [2024-11-28 04:43:05,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:05,501 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 95 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5203 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:05,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5203 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-28 04:43:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 637. [2024-11-28 04:43:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.65625) internal successors, (848), 537 states have internal predecessors, (848), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-28 04:43:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1039 transitions. [2024-11-28 04:43:05,572 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1039 transitions. Word has length 93 [2024-11-28 04:43:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:05,572 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1039 transitions. [2024-11-28 04:43:05,572 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1039 transitions. [2024-11-28 04:43:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:43:05,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:05,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:05,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:05,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:43:05,776 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:05,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1248395117, now seen corresponding path program 1 times [2024-11-28 04:43:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458359614] [2024-11-28 04:43:05,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:43:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458359614] [2024-11-28 04:43:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458359614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669935931] [2024-11-28 04:43:05,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:05,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:05,880 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:05,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:43:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:06,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:43:06,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:06,352 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:06,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669935931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:06,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:43:06,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043057649] [2024-11-28 04:43:06,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:06,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:06,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:06,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:06,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:06,354 INFO L87 Difference]: Start difference. First operand 637 states and 1039 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:06,543 INFO L93 Difference]: Finished difference Result 1116 states and 1838 transitions. [2024-11-28 04:43:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:43:06,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-11-28 04:43:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:06,550 INFO L225 Difference]: With dead ends: 1116 [2024-11-28 04:43:06,550 INFO L226 Difference]: Without dead ends: 657 [2024-11-28 04:43:06,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:43:06,554 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 113 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6002 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:06,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6002 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-28 04:43:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 637. [2024-11-28 04:43:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.65625) internal successors, (848), 537 states have internal predecessors, (848), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-28 04:43:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1039 transitions. [2024-11-28 04:43:06,589 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1039 transitions. Word has length 93 [2024-11-28 04:43:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:06,589 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1039 transitions. [2024-11-28 04:43:06,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1039 transitions. [2024-11-28 04:43:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:43:06,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:06,592 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:06,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:43:06,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:43:06,792 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:06,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:06,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1281724933, now seen corresponding path program 1 times [2024-11-28 04:43:06,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:06,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774328754] [2024-11-28 04:43:06,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:06,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774328754] [2024-11-28 04:43:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774328754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577667041] [2024-11-28 04:43:06,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:06,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:06,887 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:06,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:43:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:07,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:43:07,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:43:07,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:07,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577667041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:07,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:07,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:43:07,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378043769] [2024-11-28 04:43:07,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:07,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:07,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:07,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:07,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:07,283 INFO L87 Difference]: Start difference. First operand 637 states and 1039 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:07,349 INFO L93 Difference]: Finished difference Result 1168 states and 1923 transitions. [2024-11-28 04:43:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:07,350 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2024-11-28 04:43:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:07,355 INFO L225 Difference]: With dead ends: 1168 [2024-11-28 04:43:07,355 INFO L226 Difference]: Without dead ends: 637 [2024-11-28 04:43:07,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:07,359 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 13 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:07,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2627 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:07,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-28 04:43:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2024-11-28 04:43:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 512 states have (on average 1.6484375) internal successors, (844), 537 states have internal predecessors, (844), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-28 04:43:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1035 transitions. [2024-11-28 04:43:07,389 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1035 transitions. Word has length 93 [2024-11-28 04:43:07,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:07,389 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1035 transitions. [2024-11-28 04:43:07,390 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1035 transitions. [2024-11-28 04:43:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:43:07,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:07,392 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:07,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:43:07,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:43:07,593 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:07,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 76632600, now seen corresponding path program 1 times [2024-11-28 04:43:07,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:07,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248866964] [2024-11-28 04:43:07,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:07,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:43:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248866964] [2024-11-28 04:43:07,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248866964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108979776] [2024-11-28 04:43:07,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:07,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:07,733 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:07,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:43:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:08,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:43:08,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:43:08,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:08,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108979776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:08,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:08,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:43:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293728188] [2024-11-28 04:43:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:08,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:08,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:08,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:08,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:08,120 INFO L87 Difference]: Start difference. First operand 637 states and 1035 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:08,190 INFO L93 Difference]: Finished difference Result 1212 states and 1991 transitions. [2024-11-28 04:43:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:43:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2024-11-28 04:43:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:08,196 INFO L225 Difference]: With dead ends: 1212 [2024-11-28 04:43:08,196 INFO L226 Difference]: Without dead ends: 661 [2024-11-28 04:43:08,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:08,199 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 7 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:08,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2600 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-28 04:43:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2024-11-28 04:43:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 536 states have (on average 1.626865671641791) internal successors, (872), 561 states have internal predecessors, (872), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-28 04:43:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1063 transitions. [2024-11-28 04:43:08,228 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1063 transitions. Word has length 94 [2024-11-28 04:43:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:08,228 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1063 transitions. [2024-11-28 04:43:08,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1063 transitions. [2024-11-28 04:43:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:43:08,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:08,231 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:08,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:43:08,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:43:08,432 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:08,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1085781207, now seen corresponding path program 1 times [2024-11-28 04:43:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322674382] [2024-11-28 04:43:08,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:43:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322674382] [2024-11-28 04:43:08,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322674382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150775235] [2024-11-28 04:43:08,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:08,525 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:08,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:43:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:08,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:43:08,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:08,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150775235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:08,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:08,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:43:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136144842] [2024-11-28 04:43:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:08,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:08,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:08,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:08,976 INFO L87 Difference]: Start difference. First operand 661 states and 1063 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:09,149 INFO L93 Difference]: Finished difference Result 1146 states and 1870 transitions. [2024-11-28 04:43:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:43:09,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2024-11-28 04:43:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:09,155 INFO L225 Difference]: With dead ends: 1146 [2024-11-28 04:43:09,156 INFO L226 Difference]: Without dead ends: 687 [2024-11-28 04:43:09,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:43:09,159 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 119 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:09,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5958 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-28 04:43:09,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 661. [2024-11-28 04:43:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 536 states have (on average 1.626865671641791) internal successors, (872), 561 states have internal predecessors, (872), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-28 04:43:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1063 transitions. [2024-11-28 04:43:09,190 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1063 transitions. Word has length 95 [2024-11-28 04:43:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:09,191 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1063 transitions. [2024-11-28 04:43:09,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:43:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1063 transitions. [2024-11-28 04:43:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:43:09,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:09,193 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:09,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:09,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:43:09,394 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:09,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1150633494, now seen corresponding path program 1 times [2024-11-28 04:43:09,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:09,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473312964] [2024-11-28 04:43:09,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:09,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:09,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:09,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473312964] [2024-11-28 04:43:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473312964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164147560] [2024-11-28 04:43:09,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:09,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:09,524 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:09,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:43:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:09,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:43:09,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:43:10,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:10,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164147560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:10,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:10,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2024-11-28 04:43:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244030324] [2024-11-28 04:43:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:10,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:43:10,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:10,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:43:10,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:10,318 INFO L87 Difference]: Start difference. First operand 661 states and 1063 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:12,978 INFO L93 Difference]: Finished difference Result 1712 states and 2840 transitions. [2024-11-28 04:43:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:43:12,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 95 [2024-11-28 04:43:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:12,990 INFO L225 Difference]: With dead ends: 1712 [2024-11-28 04:43:12,990 INFO L226 Difference]: Without dead ends: 1258 [2024-11-28 04:43:12,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:12,994 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 2109 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:12,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 1075 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:43:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-11-28 04:43:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1142. [2024-11-28 04:43:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 918 states have (on average 1.6568627450980393) internal successors, (1521), 952 states have internal predecessors, (1521), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-11-28 04:43:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1885 transitions. [2024-11-28 04:43:13,096 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1885 transitions. Word has length 95 [2024-11-28 04:43:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:13,097 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1885 transitions. [2024-11-28 04:43:13,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:43:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1885 transitions. [2024-11-28 04:43:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:43:13,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:13,103 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:13,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:43:13,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:13,303 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:13,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1250884309, now seen corresponding path program 1 times [2024-11-28 04:43:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:13,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902439546] [2024-11-28 04:43:13,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:13,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:13,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902439546] [2024-11-28 04:43:13,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902439546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:13,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785545507] [2024-11-28 04:43:13,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:13,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:13,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:13,449 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:13,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:43:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:13,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:43:13,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:43:14,045 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785545507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:14,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:14,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:43:14,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949483717] [2024-11-28 04:43:14,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:14,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:14,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:14,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:14,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:14,046 INFO L87 Difference]: Start difference. First operand 1142 states and 1885 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:43:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:17,360 INFO L93 Difference]: Finished difference Result 2949 states and 4938 transitions. [2024-11-28 04:43:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:43:17,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2024-11-28 04:43:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:17,377 INFO L225 Difference]: With dead ends: 2949 [2024-11-28 04:43:17,377 INFO L226 Difference]: Without dead ends: 2012 [2024-11-28 04:43:17,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:43:17,383 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 1704 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 4602 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 4843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 4602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:17,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2037 Invalid, 4843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 4602 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:43:17,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2024-11-28 04:43:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1843. [2024-11-28 04:43:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1467 states have (on average 1.6482617586912065) internal successors, (2418), 1511 states have internal predecessors, (2418), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2024-11-28 04:43:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 3056 transitions. [2024-11-28 04:43:17,495 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 3056 transitions. Word has length 123 [2024-11-28 04:43:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:17,496 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 3056 transitions. [2024-11-28 04:43:17,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:43:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 3056 transitions. [2024-11-28 04:43:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:43:17,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:17,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:17,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:43:17,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:17,701 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:17,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash -104469948, now seen corresponding path program 1 times [2024-11-28 04:43:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:17,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239536348] [2024-11-28 04:43:17,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:17,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:17,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239536348] [2024-11-28 04:43:17,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239536348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:17,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840290034] [2024-11-28 04:43:17,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:17,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:17,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:17,800 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:17,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:43:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:18,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:43:18,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:43:18,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840290034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:18,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:43:18,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186131911] [2024-11-28 04:43:18,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:18,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:18,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:18,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:18,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:18,226 INFO L87 Difference]: Start difference. First operand 1843 states and 3056 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:43:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:18,303 INFO L93 Difference]: Finished difference Result 3486 states and 5841 transitions. [2024-11-28 04:43:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:43:18,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-11-28 04:43:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:18,317 INFO L225 Difference]: With dead ends: 3486 [2024-11-28 04:43:18,318 INFO L226 Difference]: Without dead ends: 1851 [2024-11-28 04:43:18,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:18,325 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 0 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:18,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2649 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:18,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2024-11-28 04:43:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1847. [2024-11-28 04:43:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1471 states have (on average 1.64649898028552) internal successors, (2422), 1515 states have internal predecessors, (2422), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2024-11-28 04:43:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 3060 transitions. [2024-11-28 04:43:18,491 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 3060 transitions. Word has length 124 [2024-11-28 04:43:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:18,491 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 3060 transitions. [2024-11-28 04:43:18,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:43:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 3060 transitions. [2024-11-28 04:43:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 04:43:18,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:18,498 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:18,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:43:18,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:18,699 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:18,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:18,699 INFO L85 PathProgramCache]: Analyzing trace with hash -200498217, now seen corresponding path program 1 times [2024-11-28 04:43:18,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:18,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596324330] [2024-11-28 04:43:18,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:18,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:18,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596324330] [2024-11-28 04:43:18,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596324330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724820409] [2024-11-28 04:43:18,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:18,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:18,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:18,810 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:18,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:43:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:19,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:43:19,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:43:19,410 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724820409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:19,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:19,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2024-11-28 04:43:19,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840551837] [2024-11-28 04:43:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:19,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:43:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:19,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:43:19,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:19,412 INFO L87 Difference]: Start difference. First operand 1847 states and 3060 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:43:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:23,225 INFO L93 Difference]: Finished difference Result 5664 states and 9661 transitions. [2024-11-28 04:43:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:43:23,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 127 [2024-11-28 04:43:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:23,254 INFO L225 Difference]: With dead ends: 5664 [2024-11-28 04:43:23,254 INFO L226 Difference]: Without dead ends: 4024 [2024-11-28 04:43:23,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:43:23,265 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 3525 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 5263 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3650 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 6083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 5263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:23,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3650 Valid, 4053 Invalid, 6083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 5263 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 04:43:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2024-11-28 04:43:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3989. [2024-11-28 04:43:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3138 states have (on average 1.6427660930529) internal successors, (5155), 3229 states have internal predecessors, (5155), 686 states have call successors, (686), 112 states have call predecessors, (686), 164 states have return successors, (890), 674 states have call predecessors, (890), 681 states have call successors, (890) [2024-11-28 04:43:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 6731 transitions. [2024-11-28 04:43:23,570 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 6731 transitions. Word has length 127 [2024-11-28 04:43:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:23,571 INFO L471 AbstractCegarLoop]: Abstraction has 3989 states and 6731 transitions. [2024-11-28 04:43:23,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:43:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 6731 transitions. [2024-11-28 04:43:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:43:23,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:23,580 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:23,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:43:23,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:23,781 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:23,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:23,781 INFO L85 PathProgramCache]: Analyzing trace with hash -503054362, now seen corresponding path program 1 times [2024-11-28 04:43:23,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:23,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564357442] [2024-11-28 04:43:23,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:23,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:43:23,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:23,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564357442] [2024-11-28 04:43:23,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564357442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:23,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888545810] [2024-11-28 04:43:23,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:23,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:23,884 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:23,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:43:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:24,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:43:24,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:43:24,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888545810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:24,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:24,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-28 04:43:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333736051] [2024-11-28 04:43:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:24,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:43:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:24,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:43:24,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:24,336 INFO L87 Difference]: Start difference. First operand 3989 states and 6731 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:43:25,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:25,054 INFO L93 Difference]: Finished difference Result 11135 states and 19283 transitions. [2024-11-28 04:43:25,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:43:25,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2024-11-28 04:43:25,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:25,128 INFO L225 Difference]: With dead ends: 11135 [2024-11-28 04:43:25,129 INFO L226 Difference]: Without dead ends: 7468 [2024-11-28 04:43:25,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:25,160 INFO L435 NwaCegarLoop]: 1359 mSDtfsCounter, 727 mSDsluCounter, 3423 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 4782 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:25,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 4782 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:43:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7468 states. [2024-11-28 04:43:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7468 to 7443. [2024-11-28 04:43:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 5820 states have (on average 1.6328178694158075) internal successors, (9503), 5992 states have internal predecessors, (9503), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2024-11-28 04:43:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 12708 transitions. [2024-11-28 04:43:25,662 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 12708 transitions. Word has length 128 [2024-11-28 04:43:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:25,663 INFO L471 AbstractCegarLoop]: Abstraction has 7443 states and 12708 transitions. [2024-11-28 04:43:25,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:43:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 12708 transitions. [2024-11-28 04:43:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 04:43:25,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:25,681 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:25,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:43:25,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:43:25,882 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:25,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 511974667, now seen corresponding path program 1 times [2024-11-28 04:43:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:25,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109329950] [2024-11-28 04:43:25,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:26,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:26,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109329950] [2024-11-28 04:43:26,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109329950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:26,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851469086] [2024-11-28 04:43:26,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:26,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:26,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:26,124 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:26,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:43:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:26,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:43:26,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:43:26,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:26,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851469086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:26,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:26,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-28 04:43:26,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767726603] [2024-11-28 04:43:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:26,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:26,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:26,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:26,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:26,554 INFO L87 Difference]: Start difference. First operand 7443 states and 12708 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:43:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:26,892 INFO L93 Difference]: Finished difference Result 14724 states and 25197 transitions. [2024-11-28 04:43:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:43:26,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2024-11-28 04:43:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:26,950 INFO L225 Difference]: With dead ends: 14724 [2024-11-28 04:43:26,950 INFO L226 Difference]: Without dead ends: 7479 [2024-11-28 04:43:26,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:26,985 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 5 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:26,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2599 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2024-11-28 04:43:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 7461. [2024-11-28 04:43:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 5838 states have (on average 1.632922233641658) internal successors, (9533), 6010 states have internal predecessors, (9533), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2024-11-28 04:43:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 12738 transitions. [2024-11-28 04:43:27,508 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 12738 transitions. Word has length 130 [2024-11-28 04:43:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:27,508 INFO L471 AbstractCegarLoop]: Abstraction has 7461 states and 12738 transitions. [2024-11-28 04:43:27,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:43:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 12738 transitions. [2024-11-28 04:43:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:43:27,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:27,524 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:27,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:43:27,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:27,725 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:27,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash -405631015, now seen corresponding path program 1 times [2024-11-28 04:43:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:27,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951501810] [2024-11-28 04:43:27,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:27,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951501810] [2024-11-28 04:43:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951501810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417525696] [2024-11-28 04:43:27,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:27,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:27,895 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:27,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:43:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:28,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:43:28,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:28,483 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:28,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417525696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:28,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:28,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 04:43:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299350041] [2024-11-28 04:43:28,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:28,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:28,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:28,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:28,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:43:28,485 INFO L87 Difference]: Start difference. First operand 7461 states and 12738 transitions. Second operand has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:43:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:28,879 INFO L93 Difference]: Finished difference Result 14666 states and 25092 transitions. [2024-11-28 04:43:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:43:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2024-11-28 04:43:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:28,934 INFO L225 Difference]: With dead ends: 14666 [2024-11-28 04:43:28,934 INFO L226 Difference]: Without dead ends: 7531 [2024-11-28 04:43:28,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:43:28,968 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 89 mSDsluCounter, 5114 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5979 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:28,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5979 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7531 states. [2024-11-28 04:43:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7531 to 7464. [2024-11-28 04:43:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 5840 states have (on average 1.6325342465753425) internal successors, (9534), 6013 states have internal predecessors, (9534), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2024-11-28 04:43:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 12740 transitions. [2024-11-28 04:43:29,560 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 12740 transitions. Word has length 131 [2024-11-28 04:43:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:29,561 INFO L471 AbstractCegarLoop]: Abstraction has 7464 states and 12740 transitions. [2024-11-28 04:43:29,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:43:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 12740 transitions. [2024-11-28 04:43:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:43:29,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:29,581 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:29,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:43:29,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:29,786 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:29,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash 355986523, now seen corresponding path program 1 times [2024-11-28 04:43:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:29,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582539421] [2024-11-28 04:43:29,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:29,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:30,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:30,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582539421] [2024-11-28 04:43:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582539421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249084933] [2024-11-28 04:43:30,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:30,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:30,044 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:30,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:43:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:30,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 2036 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:43:30,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:43:30,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249084933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:30,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:30,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-28 04:43:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946456645] [2024-11-28 04:43:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:30,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:43:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:30,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:43:30,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:30,690 INFO L87 Difference]: Start difference. First operand 7464 states and 12740 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-28 04:43:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:31,273 INFO L93 Difference]: Finished difference Result 7989 states and 13747 transitions. [2024-11-28 04:43:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 131 [2024-11-28 04:43:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:31,330 INFO L225 Difference]: With dead ends: 7989 [2024-11-28 04:43:31,330 INFO L226 Difference]: Without dead ends: 7972 [2024-11-28 04:43:31,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:31,339 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 816 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:31,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1608 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:43:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7972 states. [2024-11-28 04:43:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7972 to 7496. [2024-11-28 04:43:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 5872 states have (on average 1.6290871934604905) internal successors, (9566), 6045 states have internal predecessors, (9566), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2024-11-28 04:43:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 12772 transitions. [2024-11-28 04:43:31,835 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 12772 transitions. Word has length 131 [2024-11-28 04:43:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:31,836 INFO L471 AbstractCegarLoop]: Abstraction has 7496 states and 12772 transitions. [2024-11-28 04:43:31,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-28 04:43:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 12772 transitions. [2024-11-28 04:43:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 04:43:31,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:31,852 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:31,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 04:43:32,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:43:32,055 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:32,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:32,055 INFO L85 PathProgramCache]: Analyzing trace with hash -443496714, now seen corresponding path program 1 times [2024-11-28 04:43:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:32,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634515719] [2024-11-28 04:43:32,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:43:32,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634515719] [2024-11-28 04:43:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634515719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860109958] [2024-11-28 04:43:32,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:32,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:32,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:32,251 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:32,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:43:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:32,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:43:32,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:43:32,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860109958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:32,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:32,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 04:43:32,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349921417] [2024-11-28 04:43:32,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:32,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:43:32,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:32,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:43:32,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:32,802 INFO L87 Difference]: Start difference. First operand 7496 states and 12772 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:43:33,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:33,486 INFO L93 Difference]: Finished difference Result 8170 states and 13904 transitions. [2024-11-28 04:43:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:43:33,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2024-11-28 04:43:33,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:33,530 INFO L225 Difference]: With dead ends: 8170 [2024-11-28 04:43:33,531 INFO L226 Difference]: Without dead ends: 8153 [2024-11-28 04:43:33,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:43:33,537 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 834 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:33,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 3485 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:43:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2024-11-28 04:43:33,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8100. [2024-11-28 04:43:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 6344 states have (on average 1.6169609079445144) internal successors, (10258), 6517 states have internal predecessors, (10258), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2024-11-28 04:43:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 13780 transitions. [2024-11-28 04:43:33,984 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 13780 transitions. Word has length 137 [2024-11-28 04:43:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:33,985 INFO L471 AbstractCegarLoop]: Abstraction has 8100 states and 13780 transitions. [2024-11-28 04:43:33,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:43:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 13780 transitions. [2024-11-28 04:43:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 04:43:33,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:33,999 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:34,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:43:34,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:43:34,200 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:34,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1546005608, now seen corresponding path program 1 times [2024-11-28 04:43:34,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:34,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134107700] [2024-11-28 04:43:34,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:34,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:43:34,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134107700] [2024-11-28 04:43:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134107700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453037896] [2024-11-28 04:43:34,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:34,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:34,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:34,460 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:34,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:43:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:34,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:43:34,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:34,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:34,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453037896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:34,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:34,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-28 04:43:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524551830] [2024-11-28 04:43:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:34,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:43:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:34,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:43:34,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:34,925 INFO L87 Difference]: Start difference. First operand 8100 states and 13780 transitions. Second operand has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:43:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:35,327 INFO L93 Difference]: Finished difference Result 16055 states and 27353 transitions. [2024-11-28 04:43:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:43:35,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 148 [2024-11-28 04:43:35,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:35,373 INFO L225 Difference]: With dead ends: 16055 [2024-11-28 04:43:35,373 INFO L226 Difference]: Without dead ends: 8180 [2024-11-28 04:43:35,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:35,412 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 119 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:35,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5154 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2024-11-28 04:43:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 8100. [2024-11-28 04:43:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 6344 states have (on average 1.6169609079445144) internal successors, (10258), 6517 states have internal predecessors, (10258), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2024-11-28 04:43:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 13780 transitions. [2024-11-28 04:43:35,864 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 13780 transitions. Word has length 148 [2024-11-28 04:43:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:35,864 INFO L471 AbstractCegarLoop]: Abstraction has 8100 states and 13780 transitions. [2024-11-28 04:43:35,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:43:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 13780 transitions. [2024-11-28 04:43:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 04:43:35,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:35,882 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:35,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:36,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:43:36,083 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:36,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1700627123, now seen corresponding path program 1 times [2024-11-28 04:43:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:36,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093114571] [2024-11-28 04:43:36,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:36,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:43:36,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:36,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093114571] [2024-11-28 04:43:36,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093114571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:36,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649763933] [2024-11-28 04:43:36,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:36,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:36,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:36,271 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:36,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:43:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:36,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:43:36,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:43:36,803 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:36,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649763933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:36,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:36,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:43:36,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266586443] [2024-11-28 04:43:36,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:36,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:36,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:36,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:43:36,806 INFO L87 Difference]: Start difference. First operand 8100 states and 13780 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:43:37,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:37,333 INFO L93 Difference]: Finished difference Result 16062 states and 27362 transitions. [2024-11-28 04:43:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 148 [2024-11-28 04:43:37,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:37,408 INFO L225 Difference]: With dead ends: 16062 [2024-11-28 04:43:37,408 INFO L226 Difference]: Without dead ends: 7930 [2024-11-28 04:43:37,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:43:37,460 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 7 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:37,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2630 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7930 states. [2024-11-28 04:43:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7930 to 7930. [2024-11-28 04:43:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 6189 states have (on average 1.6185167232186137) internal successors, (10017), 6356 states have internal predecessors, (10017), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2024-11-28 04:43:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 13520 transitions. [2024-11-28 04:43:37,993 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 13520 transitions. Word has length 148 [2024-11-28 04:43:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:37,993 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 13520 transitions. [2024-11-28 04:43:37,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:43:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 13520 transitions. [2024-11-28 04:43:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 04:43:38,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:38,006 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:38,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:38,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:43:38,210 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:38,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1288585507, now seen corresponding path program 1 times [2024-11-28 04:43:38,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:38,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080035346] [2024-11-28 04:43:38,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:43:38,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080035346] [2024-11-28 04:43:38,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080035346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912844551] [2024-11-28 04:43:38,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:38,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:38,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:38,383 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:38,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:43:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:38,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:43:38,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:38,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:38,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912844551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:38,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:38,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:43:38,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115792241] [2024-11-28 04:43:38,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:38,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:38,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:38,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:38,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:38,868 INFO L87 Difference]: Start difference. First operand 7930 states and 13520 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:43:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:39,234 INFO L93 Difference]: Finished difference Result 15862 states and 27053 transitions. [2024-11-28 04:43:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:39,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2024-11-28 04:43:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:39,296 INFO L225 Difference]: With dead ends: 15862 [2024-11-28 04:43:39,296 INFO L226 Difference]: Without dead ends: 7963 [2024-11-28 04:43:39,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:39,334 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 128 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:39,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2509 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7963 states. [2024-11-28 04:43:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7963 to 7930. [2024-11-28 04:43:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 6189 states have (on average 1.6183551462271772) internal successors, (10016), 6356 states have internal predecessors, (10016), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2024-11-28 04:43:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 13519 transitions. [2024-11-28 04:43:39,784 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 13519 transitions. Word has length 150 [2024-11-28 04:43:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:39,784 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 13519 transitions. [2024-11-28 04:43:39,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:43:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 13519 transitions. [2024-11-28 04:43:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 04:43:39,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:39,796 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:39,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 04:43:39,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:39,997 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:39,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1314670867, now seen corresponding path program 1 times [2024-11-28 04:43:39,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:39,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802854420] [2024-11-28 04:43:39,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:39,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:43:40,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:40,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802854420] [2024-11-28 04:43:40,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802854420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:40,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:40,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:43:40,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824129583] [2024-11-28 04:43:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:40,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:43:40,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:40,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:43:40,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:40,195 INFO L87 Difference]: Start difference. First operand 7930 states and 13519 transitions. Second operand has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:43:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:40,647 INFO L93 Difference]: Finished difference Result 11383 states and 19319 transitions. [2024-11-28 04:43:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:43:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 151 [2024-11-28 04:43:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:40,684 INFO L225 Difference]: With dead ends: 11383 [2024-11-28 04:43:40,684 INFO L226 Difference]: Without dead ends: 7965 [2024-11-28 04:43:40,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:40,700 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 115 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:40,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5148 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2024-11-28 04:43:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7930. [2024-11-28 04:43:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 6189 states have (on average 1.6183551462271772) internal successors, (10016), 6356 states have internal predecessors, (10016), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2024-11-28 04:43:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 13519 transitions. [2024-11-28 04:43:41,134 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 13519 transitions. Word has length 151 [2024-11-28 04:43:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:41,135 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 13519 transitions. [2024-11-28 04:43:41,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:43:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 13519 transitions. [2024-11-28 04:43:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 04:43:41,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:41,147 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:41,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 04:43:41,147 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:41,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2036871234, now seen corresponding path program 1 times [2024-11-28 04:43:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:41,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078562357] [2024-11-28 04:43:41,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:43:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078562357] [2024-11-28 04:43:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078562357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:41,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:41,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:43:41,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853296450] [2024-11-28 04:43:41,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:41,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:41,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:41,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:41,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:43:41,256 INFO L87 Difference]: Start difference. First operand 7930 states and 13519 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:43:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:41,502 INFO L93 Difference]: Finished difference Result 11432 states and 19401 transitions. [2024-11-28 04:43:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2024-11-28 04:43:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:41,533 INFO L225 Difference]: With dead ends: 11432 [2024-11-28 04:43:41,533 INFO L226 Difference]: Without dead ends: 3517 [2024-11-28 04:43:41,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:43:41,568 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 8 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:41,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2627 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:41,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2024-11-28 04:43:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 3517. [2024-11-28 04:43:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2766 states have (on average 1.6225596529284165) internal successors, (4488), 2841 states have internal predecessors, (4488), 589 states have call successors, (589), 136 states have call predecessors, (589), 161 states have return successors, (795), 561 states have call predecessors, (795), 584 states have call successors, (795) [2024-11-28 04:43:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 5872 transitions. [2024-11-28 04:43:41,752 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 5872 transitions. Word has length 151 [2024-11-28 04:43:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:41,753 INFO L471 AbstractCegarLoop]: Abstraction has 3517 states and 5872 transitions. [2024-11-28 04:43:41,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:43:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 5872 transitions. [2024-11-28 04:43:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 04:43:41,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:41,758 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:41,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 04:43:41,759 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:41,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1039207116, now seen corresponding path program 1 times [2024-11-28 04:43:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:41,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86877944] [2024-11-28 04:43:41,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:41,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:43:42,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86877944] [2024-11-28 04:43:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86877944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:43:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197630445] [2024-11-28 04:43:42,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:42,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:43:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:42,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:43:42,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:42,065 INFO L87 Difference]: Start difference. First operand 3517 states and 5872 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 04:43:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:45,155 INFO L93 Difference]: Finished difference Result 12239 states and 21037 transitions. [2024-11-28 04:43:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:43:45,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 152 [2024-11-28 04:43:45,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:45,208 INFO L225 Difference]: With dead ends: 12239 [2024-11-28 04:43:45,208 INFO L226 Difference]: Without dead ends: 8832 [2024-11-28 04:43:45,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:43:45,233 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 2332 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 4093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:45,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 1985 Invalid, 4093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 04:43:45,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2024-11-28 04:43:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 8035. [2024-11-28 04:43:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8035 states, 6319 states have (on average 1.6344358284538694) internal successors, (10328), 6513 states have internal predecessors, (10328), 1322 states have call successors, (1322), 290 states have call predecessors, (1322), 393 states have return successors, (1905), 1275 states have call predecessors, (1905), 1317 states have call successors, (1905) [2024-11-28 04:43:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 13555 transitions. [2024-11-28 04:43:45,889 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 13555 transitions. Word has length 152 [2024-11-28 04:43:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:45,890 INFO L471 AbstractCegarLoop]: Abstraction has 8035 states and 13555 transitions. [2024-11-28 04:43:45,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 04:43:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 13555 transitions. [2024-11-28 04:43:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 04:43:45,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:45,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:45,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 04:43:45,899 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:45,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2074646302, now seen corresponding path program 1 times [2024-11-28 04:43:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:45,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69278993] [2024-11-28 04:43:45,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:45,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:43:46,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:46,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69278993] [2024-11-28 04:43:46,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69278993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:46,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:46,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:43:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968468797] [2024-11-28 04:43:46,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:46,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:43:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:46,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:43:46,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:43:46,220 INFO L87 Difference]: Start difference. First operand 8035 states and 13555 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:43:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:46,671 INFO L93 Difference]: Finished difference Result 16078 states and 27450 transitions. [2024-11-28 04:43:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2024-11-28 04:43:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:46,702 INFO L225 Difference]: With dead ends: 16078 [2024-11-28 04:43:46,702 INFO L226 Difference]: Without dead ends: 8153 [2024-11-28 04:43:46,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:43:46,722 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 0 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:46,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3346 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8153 states. [2024-11-28 04:43:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8153 to 8129. [2024-11-28 04:43:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8129 states, 6399 states have (on average 1.625566494764807) internal successors, (10402), 6577 states have internal predecessors, (10402), 1316 states have call successors, (1316), 290 states have call predecessors, (1316), 413 states have return successors, (1989), 1305 states have call predecessors, (1989), 1311 states have call successors, (1989) [2024-11-28 04:43:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 13707 transitions. [2024-11-28 04:43:47,161 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 13707 transitions. Word has length 157 [2024-11-28 04:43:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:47,161 INFO L471 AbstractCegarLoop]: Abstraction has 8129 states and 13707 transitions. [2024-11-28 04:43:47,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:43:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 13707 transitions. [2024-11-28 04:43:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 04:43:47,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:47,176 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:47,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 04:43:47,176 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:47,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:47,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1128508982, now seen corresponding path program 1 times [2024-11-28 04:43:47,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:47,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127521151] [2024-11-28 04:43:47,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:47,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:43:47,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:47,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127521151] [2024-11-28 04:43:47,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127521151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:47,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:47,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:43:47,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944173804] [2024-11-28 04:43:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:47,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:47,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:47,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:47,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:47,695 INFO L87 Difference]: Start difference. First operand 8129 states and 13707 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 04:43:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:51,343 INFO L93 Difference]: Finished difference Result 25578 states and 44189 transitions. [2024-11-28 04:43:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:43:51,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 161 [2024-11-28 04:43:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:51,415 INFO L225 Difference]: With dead ends: 25578 [2024-11-28 04:43:51,415 INFO L226 Difference]: Without dead ends: 17539 [2024-11-28 04:43:51,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:51,445 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 3258 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3405 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:51,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3405 Valid, 1807 Invalid, 4166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:43:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17539 states. [2024-11-28 04:43:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17539 to 17473. [2024-11-28 04:43:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17473 states, 13614 states have (on average 1.6114294109005436) internal successors, (21938), 14015 states have internal predecessors, (21938), 2937 states have call successors, (2937), 638 states have call predecessors, (2937), 921 states have return successors, (4945), 2929 states have call predecessors, (4945), 2932 states have call successors, (4945) [2024-11-28 04:43:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17473 states to 17473 states and 29820 transitions. [2024-11-28 04:43:52,379 INFO L78 Accepts]: Start accepts. Automaton has 17473 states and 29820 transitions. Word has length 161 [2024-11-28 04:43:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:52,379 INFO L471 AbstractCegarLoop]: Abstraction has 17473 states and 29820 transitions. [2024-11-28 04:43:52,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 04:43:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 17473 states and 29820 transitions. [2024-11-28 04:43:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 04:43:52,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:52,384 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:52,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 04:43:52,384 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:52,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2066987336, now seen corresponding path program 1 times [2024-11-28 04:43:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:52,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028732787] [2024-11-28 04:43:52,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:43:52,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028732787] [2024-11-28 04:43:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028732787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514434900] [2024-11-28 04:43:52,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:52,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:52,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:52,776 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:52,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:43:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:53,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:43:53,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:43:53,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514434900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:53,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:53,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-28 04:43:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271769762] [2024-11-28 04:43:53,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:53,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:53,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:53,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:53,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:53,263 INFO L87 Difference]: Start difference. First operand 17473 states and 29820 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:43:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:54,534 INFO L93 Difference]: Finished difference Result 35020 states and 61717 transitions. [2024-11-28 04:43:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:54,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 164 [2024-11-28 04:43:54,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:54,641 INFO L225 Difference]: With dead ends: 35020 [2024-11-28 04:43:54,641 INFO L226 Difference]: Without dead ends: 17705 [2024-11-28 04:43:54,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:43:54,722 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 260 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:54,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 2444 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2024-11-28 04:43:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 17489. [2024-11-28 04:43:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17489 states, 13622 states have (on average 1.5949199823814417) internal successors, (21726), 14031 states have internal predecessors, (21726), 2937 states have call successors, (2937), 638 states have call predecessors, (2937), 929 states have return successors, (4969), 2929 states have call predecessors, (4969), 2932 states have call successors, (4969) [2024-11-28 04:43:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17489 states to 17489 states and 29632 transitions. [2024-11-28 04:43:55,759 INFO L78 Accepts]: Start accepts. Automaton has 17489 states and 29632 transitions. Word has length 164 [2024-11-28 04:43:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:55,760 INFO L471 AbstractCegarLoop]: Abstraction has 17489 states and 29632 transitions. [2024-11-28 04:43:55,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:43:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 17489 states and 29632 transitions. [2024-11-28 04:43:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 04:43:55,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:55,763 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:55,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:43:55,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:43:55,964 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:55,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash 69806178, now seen corresponding path program 1 times [2024-11-28 04:43:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:55,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180016385] [2024-11-28 04:43:55,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:55,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:43:56,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:56,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180016385] [2024-11-28 04:43:56,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180016385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:56,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605015773] [2024-11-28 04:43:56,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:56,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:56,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:56,245 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:56,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:43:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:56,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:43:56,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:43:56,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605015773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:56,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:56,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-28 04:43:56,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131647305] [2024-11-28 04:43:56,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:56,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:56,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:56,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:56,720 INFO L87 Difference]: Start difference. First operand 17489 states and 29632 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:43:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:57,615 INFO L93 Difference]: Finished difference Result 35128 states and 61038 transitions. [2024-11-28 04:43:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:57,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 168 [2024-11-28 04:43:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:57,690 INFO L225 Difference]: With dead ends: 35128 [2024-11-28 04:43:57,690 INFO L226 Difference]: Without dead ends: 17661 [2024-11-28 04:43:57,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:43:57,748 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 14 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:57,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2432 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17661 states. [2024-11-28 04:43:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17661 to 17661. [2024-11-28 04:43:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17661 states, 13762 states have (on average 1.5789856125563144) internal successors, (21730), 14185 states have internal predecessors, (21730), 2937 states have call successors, (2937), 656 states have call predecessors, (2937), 961 states have return successors, (5001), 2929 states have call predecessors, (5001), 2932 states have call successors, (5001) [2024-11-28 04:43:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17661 states to 17661 states and 29668 transitions. [2024-11-28 04:43:58,593 INFO L78 Accepts]: Start accepts. Automaton has 17661 states and 29668 transitions. Word has length 168 [2024-11-28 04:43:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:58,594 INFO L471 AbstractCegarLoop]: Abstraction has 17661 states and 29668 transitions. [2024-11-28 04:43:58,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:43:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 17661 states and 29668 transitions. [2024-11-28 04:43:58,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 04:43:58,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:58,599 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:58,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 04:43:58,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:43:58,799 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:58,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash -310962759, now seen corresponding path program 1 times [2024-11-28 04:43:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140367957] [2024-11-28 04:43:58,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:43:59,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140367957] [2024-11-28 04:43:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140367957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:59,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:59,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:43:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552240958] [2024-11-28 04:43:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:59,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:43:59,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:59,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:43:59,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:59,073 INFO L87 Difference]: Start difference. First operand 17661 states and 29668 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:44:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:02,840 INFO L93 Difference]: Finished difference Result 35750 states and 61248 transitions. [2024-11-28 04:44:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:44:02,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 169 [2024-11-28 04:44:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:02,963 INFO L225 Difference]: With dead ends: 35750 [2024-11-28 04:44:02,963 INFO L226 Difference]: Without dead ends: 20437 [2024-11-28 04:44:03,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:44:03,039 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 2016 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:03,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1730 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 04:44:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20437 states. [2024-11-28 04:44:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20437 to 18319. [2024-11-28 04:44:04,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18319 states, 14248 states have (on average 1.5701852891633914) internal successors, (22372), 14711 states have internal predecessors, (22372), 3003 states have call successors, (3003), 716 states have call predecessors, (3003), 1067 states have return successors, (5315), 3001 states have call predecessors, (5315), 2998 states have call successors, (5315) [2024-11-28 04:44:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18319 states to 18319 states and 30690 transitions. [2024-11-28 04:44:04,420 INFO L78 Accepts]: Start accepts. Automaton has 18319 states and 30690 transitions. Word has length 169 [2024-11-28 04:44:04,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:04,421 INFO L471 AbstractCegarLoop]: Abstraction has 18319 states and 30690 transitions. [2024-11-28 04:44:04,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:44:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 18319 states and 30690 transitions. [2024-11-28 04:44:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 04:44:04,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:04,426 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:04,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 04:44:04,426 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:04,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1413839507, now seen corresponding path program 1 times [2024-11-28 04:44:04,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:04,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483780361] [2024-11-28 04:44:04,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:04,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:44:04,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483780361] [2024-11-28 04:44:04,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483780361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088513978] [2024-11-28 04:44:04,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:04,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:04,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:04,822 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:04,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:44:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:05,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:44:05,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:44:05,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:05,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088513978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:05,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:05,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-28 04:44:05,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474113495] [2024-11-28 04:44:05,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:05,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:05,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:05,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:05,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:44:05,319 INFO L87 Difference]: Start difference. First operand 18319 states and 30690 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:44:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:06,237 INFO L93 Difference]: Finished difference Result 39549 states and 67652 transitions. [2024-11-28 04:44:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2024-11-28 04:44:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:06,362 INFO L225 Difference]: With dead ends: 39549 [2024-11-28 04:44:06,362 INFO L226 Difference]: Without dead ends: 23292 [2024-11-28 04:44:06,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:44:06,432 INFO L435 NwaCegarLoop]: 1346 mSDtfsCounter, 744 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:06,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 2173 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:44:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23292 states. [2024-11-28 04:44:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23292 to 21891. [2024-11-28 04:44:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21891 states, 17089 states have (on average 1.57194686640529) internal successors, (26863), 17581 states have internal predecessors, (26863), 3560 states have call successors, (3560), 862 states have call predecessors, (3560), 1241 states have return successors, (6553), 3579 states have call predecessors, (6553), 3555 states have call successors, (6553) [2024-11-28 04:44:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21891 states to 21891 states and 36976 transitions. [2024-11-28 04:44:07,541 INFO L78 Accepts]: Start accepts. Automaton has 21891 states and 36976 transitions. Word has length 174 [2024-11-28 04:44:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:07,541 INFO L471 AbstractCegarLoop]: Abstraction has 21891 states and 36976 transitions. [2024-11-28 04:44:07,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:44:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 21891 states and 36976 transitions. [2024-11-28 04:44:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 04:44:07,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:07,547 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:07,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:07,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 04:44:07,748 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:07,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1425736522, now seen corresponding path program 1 times [2024-11-28 04:44:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:07,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452523465] [2024-11-28 04:44:07,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:44:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452523465] [2024-11-28 04:44:08,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452523465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048579647] [2024-11-28 04:44:08,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:08,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:08,094 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:08,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 04:44:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:08,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 2184 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:44:08,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 04:44:08,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048579647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:08,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:08,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-28 04:44:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621402353] [2024-11-28 04:44:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:08,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:44:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:08,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:44:08,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:44:08,937 INFO L87 Difference]: Start difference. First operand 21891 states and 36976 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 5 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 04:44:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:12,826 INFO L93 Difference]: Finished difference Result 45233 states and 78192 transitions. [2024-11-28 04:44:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:44:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 5 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2024-11-28 04:44:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:13,032 INFO L225 Difference]: With dead ends: 45233 [2024-11-28 04:44:13,032 INFO L226 Difference]: Without dead ends: 24982 [2024-11-28 04:44:13,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:44:13,161 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 1772 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:13,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 2466 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 3482 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:44:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24982 states. [2024-11-28 04:44:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24982 to 22503. [2024-11-28 04:44:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22503 states, 17461 states have (on average 1.5666342133898403) internal successors, (27355), 18019 states have internal predecessors, (27355), 3752 states have call successors, (3752), 862 states have call predecessors, (3752), 1289 states have return successors, (7377), 3753 states have call predecessors, (7377), 3747 states have call successors, (7377) [2024-11-28 04:44:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22503 states to 22503 states and 38484 transitions. [2024-11-28 04:44:14,865 INFO L78 Accepts]: Start accepts. Automaton has 22503 states and 38484 transitions. Word has length 176 [2024-11-28 04:44:14,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:14,865 INFO L471 AbstractCegarLoop]: Abstraction has 22503 states and 38484 transitions. [2024-11-28 04:44:14,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 5 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 04:44:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 22503 states and 38484 transitions. [2024-11-28 04:44:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 04:44:14,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:14,868 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:14,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 04:44:15,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce155af0-19c2-4f12-a6ca-b8d1ae8ea344/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 04:44:15,069 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:15,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:15,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1837486229, now seen corresponding path program 1 times [2024-11-28 04:44:15,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:15,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746050174] [2024-11-28 04:44:15,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:15,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 04:44:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746050174] [2024-11-28 04:44:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746050174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:44:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198400009] [2024-11-28 04:44:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:15,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:44:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:15,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:44:15,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:44:15,524 INFO L87 Difference]: Start difference. First operand 22503 states and 38484 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 04:44:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:18,264 INFO L93 Difference]: Finished difference Result 45066 states and 77399 transitions. [2024-11-28 04:44:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:44:18,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2024-11-28 04:44:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:18,373 INFO L225 Difference]: With dead ends: 45066 [2024-11-28 04:44:18,373 INFO L226 Difference]: Without dead ends: 22665 [2024-11-28 04:44:18,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:44:18,439 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 1222 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:18,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1756 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:44:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22665 states. [2024-11-28 04:44:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22665 to 22547. [2024-11-28 04:44:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22547 states, 17483 states have (on average 1.559000171595264) internal successors, (27256), 18063 states have internal predecessors, (27256), 3752 states have call successors, (3752), 862 states have call predecessors, (3752), 1311 states have return successors, (7553), 3753 states have call predecessors, (7553), 3747 states have call successors, (7553) [2024-11-28 04:44:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22547 states to 22547 states and 38561 transitions. [2024-11-28 04:44:19,869 INFO L78 Accepts]: Start accepts. Automaton has 22547 states and 38561 transitions. Word has length 174 [2024-11-28 04:44:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:19,870 INFO L471 AbstractCegarLoop]: Abstraction has 22547 states and 38561 transitions. [2024-11-28 04:44:19,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 04:44:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 22547 states and 38561 transitions. [2024-11-28 04:44:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 04:44:19,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:19,875 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:19,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 04:44:19,875 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:19,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash -765599082, now seen corresponding path program 1 times [2024-11-28 04:44:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040202489] [2024-11-28 04:44:19,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 04:44:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040202489] [2024-11-28 04:44:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040202489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:20,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:44:20,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659823324] [2024-11-28 04:44:20,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:20,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:44:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:20,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:44:20,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:44:20,154 INFO L87 Difference]: Start difference. First operand 22547 states and 38561 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:44:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:25,342 INFO L93 Difference]: Finished difference Result 63774 states and 113644 transitions. [2024-11-28 04:44:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:44:25,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2024-11-28 04:44:25,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:25,563 INFO L225 Difference]: With dead ends: 63774 [2024-11-28 04:44:25,563 INFO L226 Difference]: Without dead ends: 41355 [2024-11-28 04:44:25,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:44:25,667 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 2044 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:25,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 1229 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:44:25,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41355 states.