./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/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_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/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_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/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 866b4070887ce539f36e137c6ed6e587ee3f43d9563c34ef0dd3382aa4e2313a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:53:53,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:53:54,018 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:53:54,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:53:54,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:53:54,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:53:54,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:53:54,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:53:54,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:53:54,078 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:53:54,078 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:53:54,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:53:54,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:53:54,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:53:54,079 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:53:54,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:53:54,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:53:54,079 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:53:54,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:53:54,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:53:54,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:53:54,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:53:54,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:53:54,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:53:54,080 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:53:54,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:53:54,080 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:53:54,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:53:54,081 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:53:54,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:53:54,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:53:54,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:53:54,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:53:54,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:53:54,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:53:54,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:53:54,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:53:54,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:53:54,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:53:54,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:53:54,083 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:53:54,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:53:54,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:53:54,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:53:54,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:53:54,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:53:54,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:53:54,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:53:54,085 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_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/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 -> 866b4070887ce539f36e137c6ed6e587ee3f43d9563c34ef0dd3382aa4e2313a [2024-11-27 19:53:54,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:53:54,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:53:54,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:53:54,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:53:54,514 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:53:54,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2024-11-27 19:53:58,168 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/data/6ebf4e0a8/d0c4b2696739427e9926a4f64ff4e896/FLAG1957fc995 [2024-11-27 19:53:58,751 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:53:58,753 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2024-11-27 19:53:58,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/data/6ebf4e0a8/d0c4b2696739427e9926a4f64ff4e896/FLAG1957fc995 [2024-11-27 19:53:58,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/data/6ebf4e0a8/d0c4b2696739427e9926a4f64ff4e896 [2024-11-27 19:53:58,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:53:58,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:53:58,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:53:58,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:53:58,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:53:58,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:53:58" (1/1) ... [2024-11-27 19:53:58,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1041a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:58, skipping insertion in model container [2024-11-27 19:53:58,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:53:58" (1/1) ... [2024-11-27 19:53:58,940 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:53:59,628 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_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c[71150,71163] [2024-11-27 19:53:59,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:53:59,659 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:53:59,670 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-27 19:53:59,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [716] [2024-11-27 19:53:59,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1082] [2024-11-27 19:53:59,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1183] [2024-11-27 19:53:59,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1221] [2024-11-27 19:53:59,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1341] [2024-11-27 19:53:59,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2956] [2024-11-27 19:53:59,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [3305] [2024-11-27 19:53:59,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3342] [2024-11-27 19:53:59,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3351] [2024-11-27 19:53:59,883 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_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c[71150,71163] [2024-11-27 19:53:59,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:53:59,911 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:53:59,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59 WrapperNode [2024-11-27 19:53:59,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:53:59,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:53:59,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:53:59,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:53:59,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:53:59,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,037 INFO L138 Inliner]: procedures = 94, calls = 342, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 896 [2024-11-27 19:54:00,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:54:00,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:54:00,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:54:00,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:54:00,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,113 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-27 19:54:00,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,153 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:54:00,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:54:00,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:54:00,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:54:00,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (1/1) ... [2024-11-27 19:54:00,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:54:00,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:00,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:54:00,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:54:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:54:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-27 19:54:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-27 19:54:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-27 19:54:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-27 19:54:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-27 19:54:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-27 19:54:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-27 19:54:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-27 19:54:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-27 19:54:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-27 19:54:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-27 19:54:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-27 19:54:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-27 19:54:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-27 19:54:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-27 19:54:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-27 19:54:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-27 19:54:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-27 19:54:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-27 19:54:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-27 19:54:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-27 19:54:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-27 19:54:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-27 19:54:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-27 19:54:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-27 19:54:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-27 19:54:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-27 19:54:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-27 19:54:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-27 19:54:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-27 19:54:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-27 19:54:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-27 19:54:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-27 19:54:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-27 19:54:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-27 19:54:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-27 19:54:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-27 19:54:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-27 19:54:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-27 19:54:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-27 19:54:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:54:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-27 19:54:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-27 19:54:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-27 19:54:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-27 19:54:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-27 19:54:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-27 19:54:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-27 19:54:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-27 19:54:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-27 19:54:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-27 19:54:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:54:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:54:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-27 19:54:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-27 19:54:00,574 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:54:00,578 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:54:02,376 INFO L? ?]: Removed 474 outVars from TransFormulas that were not future-live. [2024-11-27 19:54:02,377 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:54:02,419 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:54:02,419 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 19:54:02,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:54:02 BoogieIcfgContainer [2024-11-27 19:54:02,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:54:02,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:54:02,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:54:02,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:54:02,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:53:58" (1/3) ... [2024-11-27 19:54:02,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ae04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:54:02, skipping insertion in model container [2024-11-27 19:54:02,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:53:59" (2/3) ... [2024-11-27 19:54:02,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ae04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:54:02, skipping insertion in model container [2024-11-27 19:54:02,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:54:02" (3/3) ... [2024-11-27 19:54:02,444 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product31.cil.c [2024-11-27 19:54:02,465 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:54:02,469 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product31.cil.c that has 26 procedures, 567 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:54:02,595 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:54:02,615 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;@295bd150, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:54:02,615 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:54:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 567 states, 441 states have (on average 1.6689342403628118) internal successors, (736), 457 states have internal predecessors, (736), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 19:54:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 19:54:02,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:02,670 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:02,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:02,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash -45713282, now seen corresponding path program 1 times [2024-11-27 19:54:02,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:02,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211703800] [2024-11-27 19:54:02,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:02,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:03,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:03,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211703800] [2024-11-27 19:54:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211703800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:03,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:03,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:03,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500723301] [2024-11-27 19:54:03,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:03,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:03,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:03,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:03,706 INFO L87 Difference]: Start difference. First operand has 567 states, 441 states have (on average 1.6689342403628118) internal successors, (736), 457 states have internal predecessors, (736), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:04,026 INFO L93 Difference]: Finished difference Result 1127 states and 1868 transitions. [2024-11-27 19:54:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:04,029 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2024-11-27 19:54:04,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:04,048 INFO L225 Difference]: With dead ends: 1127 [2024-11-27 19:54:04,048 INFO L226 Difference]: Without dead ends: 562 [2024-11-27 19:54:04,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:54:04,065 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 6 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:04,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2745 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:54:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-27 19:54:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-27 19:54:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 437 states have (on average 1.6590389016018308) internal successors, (725), 452 states have internal predecessors, (725), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 922 transitions. [2024-11-27 19:54:04,242 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 922 transitions. Word has length 103 [2024-11-27 19:54:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:04,245 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 922 transitions. [2024-11-27 19:54:04,246 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 922 transitions. [2024-11-27 19:54:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 19:54:04,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:04,256 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:04,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:54:04,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:04,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash 216045242, now seen corresponding path program 1 times [2024-11-27 19:54:04,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:04,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049256772] [2024-11-27 19:54:04,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:04,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049256772] [2024-11-27 19:54:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049256772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:04,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:04,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923967545] [2024-11-27 19:54:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:04,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:04,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:04,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:04,681 INFO L87 Difference]: Start difference. First operand 562 states and 922 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:04,847 INFO L93 Difference]: Finished difference Result 1107 states and 1821 transitions. [2024-11-27 19:54:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:54:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-11-27 19:54:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:04,858 INFO L225 Difference]: With dead ends: 1107 [2024-11-27 19:54:04,858 INFO L226 Difference]: Without dead ends: 562 [2024-11-27 19:54:04,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:04,865 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 4 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:04,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2717 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-27 19:54:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-27 19:54:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 437 states have (on average 1.6567505720823799) internal successors, (724), 452 states have internal predecessors, (724), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 921 transitions. [2024-11-27 19:54:04,942 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 921 transitions. Word has length 104 [2024-11-27 19:54:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:04,943 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 921 transitions. [2024-11-27 19:54:04,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 921 transitions. [2024-11-27 19:54:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-27 19:54:04,950 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:04,950 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:04,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:54:04,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:04,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash -316375686, now seen corresponding path program 1 times [2024-11-27 19:54:04,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:04,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801284617] [2024-11-27 19:54:04,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:05,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801284617] [2024-11-27 19:54:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801284617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:05,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398450514] [2024-11-27 19:54:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:05,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:05,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:05,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:05,264 INFO L87 Difference]: Start difference. First operand 562 states and 921 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:05,362 INFO L93 Difference]: Finished difference Result 1107 states and 1820 transitions. [2024-11-27 19:54:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:54:05,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-11-27 19:54:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:05,368 INFO L225 Difference]: With dead ends: 1107 [2024-11-27 19:54:05,368 INFO L226 Difference]: Without dead ends: 562 [2024-11-27 19:54:05,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:05,374 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 3 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:05,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2717 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-27 19:54:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-27 19:54:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 437 states have (on average 1.654462242562929) internal successors, (723), 452 states have internal predecessors, (723), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 920 transitions. [2024-11-27 19:54:05,413 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 920 transitions. Word has length 105 [2024-11-27 19:54:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:05,414 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 920 transitions. [2024-11-27 19:54:05,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 920 transitions. [2024-11-27 19:54:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-27 19:54:05,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:05,419 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:05,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:54:05,420 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:05,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash 301444150, now seen corresponding path program 1 times [2024-11-27 19:54:05,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:05,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747396421] [2024-11-27 19:54:05,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:05,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:05,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747396421] [2024-11-27 19:54:05,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747396421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:05,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:05,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:05,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074753432] [2024-11-27 19:54:05,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:05,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:05,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:05,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:05,714 INFO L87 Difference]: Start difference. First operand 562 states and 920 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:05,816 INFO L93 Difference]: Finished difference Result 1107 states and 1819 transitions. [2024-11-27 19:54:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:54:05,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-27 19:54:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:05,824 INFO L225 Difference]: With dead ends: 1107 [2024-11-27 19:54:05,824 INFO L226 Difference]: Without dead ends: 562 [2024-11-27 19:54:05,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:05,832 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 2 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:05,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2717 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-27 19:54:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-27 19:54:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 437 states have (on average 1.6521739130434783) internal successors, (722), 452 states have internal predecessors, (722), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 919 transitions. [2024-11-27 19:54:05,880 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 919 transitions. Word has length 106 [2024-11-27 19:54:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:05,885 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 919 transitions. [2024-11-27 19:54:05,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 919 transitions. [2024-11-27 19:54:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 19:54:05,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:05,893 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:05,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:54:05,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:05,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2077977994, now seen corresponding path program 1 times [2024-11-27 19:54:05,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:05,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569935529] [2024-11-27 19:54:05,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:06,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569935529] [2024-11-27 19:54:06,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569935529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:06,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:06,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507696322] [2024-11-27 19:54:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:06,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:06,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:06,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:06,157 INFO L87 Difference]: Start difference. First operand 562 states and 919 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:06,243 INFO L93 Difference]: Finished difference Result 1107 states and 1818 transitions. [2024-11-27 19:54:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:54:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-11-27 19:54:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:06,251 INFO L225 Difference]: With dead ends: 1107 [2024-11-27 19:54:06,252 INFO L226 Difference]: Without dead ends: 562 [2024-11-27 19:54:06,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:06,257 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 1 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:06,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2717 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-27 19:54:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-27 19:54:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 437 states have (on average 1.6498855835240274) internal successors, (721), 452 states have internal predecessors, (721), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 918 transitions. [2024-11-27 19:54:06,309 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 918 transitions. Word has length 107 [2024-11-27 19:54:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:06,310 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 918 transitions. [2024-11-27 19:54:06,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 918 transitions. [2024-11-27 19:54:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-27 19:54:06,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:06,315 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:06,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:54:06,315 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:06,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1412346290, now seen corresponding path program 1 times [2024-11-27 19:54:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:06,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038557661] [2024-11-27 19:54:06,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:06,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:06,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:06,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038557661] [2024-11-27 19:54:06,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038557661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:06,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 19:54:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423008723] [2024-11-27 19:54:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:06,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:54:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:06,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:54:06,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:54:06,739 INFO L87 Difference]: Start difference. First operand 562 states and 918 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 19:54:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:06,962 INFO L93 Difference]: Finished difference Result 1118 states and 1835 transitions. [2024-11-27 19:54:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:54:06,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-27 19:54:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:06,974 INFO L225 Difference]: With dead ends: 1118 [2024-11-27 19:54:06,975 INFO L226 Difference]: Without dead ends: 577 [2024-11-27 19:54:06,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:54:06,980 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 91 mSDsluCounter, 4440 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5345 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:06,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5345 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:54:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-27 19:54:07,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2024-11-27 19:54:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 447 states have (on average 1.6465324384787472) internal successors, (736), 464 states have internal predecessors, (736), 100 states have call successors, (100), 26 states have call predecessors, (100), 27 states have return successors, (102), 97 states have call predecessors, (102), 99 states have call successors, (102) [2024-11-27 19:54:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 938 transitions. [2024-11-27 19:54:07,025 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 938 transitions. Word has length 108 [2024-11-27 19:54:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:07,026 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 938 transitions. [2024-11-27 19:54:07,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 19:54:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 938 transitions. [2024-11-27 19:54:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-27 19:54:07,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:07,034 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:07,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:54:07,034 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:07,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1398096145, now seen corresponding path program 1 times [2024-11-27 19:54:07,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912861057] [2024-11-27 19:54:07,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:07,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:07,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:07,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912861057] [2024-11-27 19:54:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912861057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:07,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:07,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909165257] [2024-11-27 19:54:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:07,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:07,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:07,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:07,216 INFO L87 Difference]: Start difference. First operand 575 states and 938 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:07,315 INFO L93 Difference]: Finished difference Result 1125 states and 1846 transitions. [2024-11-27 19:54:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-11-27 19:54:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:07,325 INFO L225 Difference]: With dead ends: 1125 [2024-11-27 19:54:07,326 INFO L226 Difference]: Without dead ends: 571 [2024-11-27 19:54:07,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:54:07,330 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 1 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:07,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2712 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-27 19:54:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2024-11-27 19:54:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 445 states have (on average 1.6471910112359551) internal successors, (733), 461 states have internal predecessors, (733), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2024-11-27 19:54:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 931 transitions. [2024-11-27 19:54:07,373 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 931 transitions. Word has length 108 [2024-11-27 19:54:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:07,374 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 931 transitions. [2024-11-27 19:54:07,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 931 transitions. [2024-11-27 19:54:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-27 19:54:07,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:07,380 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:07,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:54:07,380 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:07,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1281546890, now seen corresponding path program 1 times [2024-11-27 19:54:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:07,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937135887] [2024-11-27 19:54:07,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:07,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:07,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:07,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937135887] [2024-11-27 19:54:07,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937135887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:07,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:54:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715731301] [2024-11-27 19:54:07,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:07,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:54:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:07,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:54:07,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:54:07,660 INFO L87 Difference]: Start difference. First operand 571 states and 931 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:08,089 INFO L93 Difference]: Finished difference Result 1168 states and 1918 transitions. [2024-11-27 19:54:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:54:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-27 19:54:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:08,095 INFO L225 Difference]: With dead ends: 1168 [2024-11-27 19:54:08,095 INFO L226 Difference]: Without dead ends: 603 [2024-11-27 19:54:08,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:54:08,099 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 72 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:08,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4321 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:54:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-27 19:54:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 576. [2024-11-27 19:54:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 450 states have (on average 1.6333333333333333) internal successors, (735), 465 states have internal predecessors, (735), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 932 transitions. [2024-11-27 19:54:08,136 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 932 transitions. Word has length 109 [2024-11-27 19:54:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:08,136 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 932 transitions. [2024-11-27 19:54:08,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 932 transitions. [2024-11-27 19:54:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 19:54:08,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:08,141 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:08,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:54:08,142 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:08,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1147250069, now seen corresponding path program 1 times [2024-11-27 19:54:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:08,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181403597] [2024-11-27 19:54:08,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:08,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181403597] [2024-11-27 19:54:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181403597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:08,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:08,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:54:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190964907] [2024-11-27 19:54:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:08,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:54:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:08,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:54:08,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:54:08,371 INFO L87 Difference]: Start difference. First operand 576 states and 932 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:08,673 INFO L93 Difference]: Finished difference Result 1119 states and 1813 transitions. [2024-11-27 19:54:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-11-27 19:54:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:08,679 INFO L225 Difference]: With dead ends: 1119 [2024-11-27 19:54:08,679 INFO L226 Difference]: Without dead ends: 594 [2024-11-27 19:54:08,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:54:08,683 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 56 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:08,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4298 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:54:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-27 19:54:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 576. [2024-11-27 19:54:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 450 states have (on average 1.6244444444444444) internal successors, (731), 465 states have internal predecessors, (731), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 928 transitions. [2024-11-27 19:54:08,713 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 928 transitions. Word has length 110 [2024-11-27 19:54:08,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:08,714 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 928 transitions. [2024-11-27 19:54:08,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 928 transitions. [2024-11-27 19:54:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 19:54:08,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:08,718 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:08,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:54:08,719 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:08,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:08,719 INFO L85 PathProgramCache]: Analyzing trace with hash -472227985, now seen corresponding path program 1 times [2024-11-27 19:54:08,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:08,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072563486] [2024-11-27 19:54:08,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:08,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:08,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:08,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072563486] [2024-11-27 19:54:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072563486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:08,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:08,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:54:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544579608] [2024-11-27 19:54:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:08,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:54:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:08,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:54:08,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:54:08,942 INFO L87 Difference]: Start difference. First operand 576 states and 928 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:09,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:09,239 INFO L93 Difference]: Finished difference Result 1119 states and 1809 transitions. [2024-11-27 19:54:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:09,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-27 19:54:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:09,246 INFO L225 Difference]: With dead ends: 1119 [2024-11-27 19:54:09,246 INFO L226 Difference]: Without dead ends: 594 [2024-11-27 19:54:09,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:54:09,250 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 55 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:09,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4293 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:54:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-27 19:54:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 576. [2024-11-27 19:54:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 450 states have (on average 1.6155555555555556) internal successors, (727), 465 states have internal predecessors, (727), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 924 transitions. [2024-11-27 19:54:09,284 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 924 transitions. Word has length 111 [2024-11-27 19:54:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:09,284 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 924 transitions. [2024-11-27 19:54:09,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 924 transitions. [2024-11-27 19:54:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 19:54:09,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:09,289 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:09,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:54:09,290 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:09,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash 7019503, now seen corresponding path program 1 times [2024-11-27 19:54:09,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:09,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824463815] [2024-11-27 19:54:09,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:09,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824463815] [2024-11-27 19:54:09,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824463815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:09,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 19:54:09,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068656714] [2024-11-27 19:54:09,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:09,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:54:09,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:09,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:54:09,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:54:09,569 INFO L87 Difference]: Start difference. First operand 576 states and 924 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 19:54:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:09,713 INFO L93 Difference]: Finished difference Result 1110 states and 1791 transitions. [2024-11-27 19:54:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:54:09,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-11-27 19:54:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:09,719 INFO L225 Difference]: With dead ends: 1110 [2024-11-27 19:54:09,720 INFO L226 Difference]: Without dead ends: 564 [2024-11-27 19:54:09,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:54:09,724 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 94 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:09,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5268 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:54:09,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-27 19:54:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 555. [2024-11-27 19:54:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 429 states have (on average 1.6083916083916083) internal successors, (690), 444 states have internal predecessors, (690), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 887 transitions. [2024-11-27 19:54:09,754 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 887 transitions. Word has length 111 [2024-11-27 19:54:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:09,755 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 887 transitions. [2024-11-27 19:54:09,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 19:54:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 887 transitions. [2024-11-27 19:54:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 19:54:09,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:09,759 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:09,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 19:54:09,760 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:09,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -887684006, now seen corresponding path program 1 times [2024-11-27 19:54:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:09,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295588219] [2024-11-27 19:54:09,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:09,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295588219] [2024-11-27 19:54:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295588219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:09,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:54:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127770808] [2024-11-27 19:54:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:09,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:54:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:09,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:54:09,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:54:09,986 INFO L87 Difference]: Start difference. First operand 555 states and 887 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:10,168 INFO L93 Difference]: Finished difference Result 1089 states and 1754 transitions. [2024-11-27 19:54:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-11-27 19:54:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:10,175 INFO L225 Difference]: With dead ends: 1089 [2024-11-27 19:54:10,175 INFO L226 Difference]: Without dead ends: 564 [2024-11-27 19:54:10,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:54:10,179 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 39 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:10,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4298 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:54:10,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-27 19:54:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 555. [2024-11-27 19:54:10,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 429 states have (on average 1.606060606060606) internal successors, (689), 444 states have internal predecessors, (689), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 886 transitions. [2024-11-27 19:54:10,209 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 886 transitions. Word has length 112 [2024-11-27 19:54:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:10,209 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 886 transitions. [2024-11-27 19:54:10,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 886 transitions. [2024-11-27 19:54:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 19:54:10,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:10,214 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:10,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:54:10,214 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:10,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:10,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1661804628, now seen corresponding path program 1 times [2024-11-27 19:54:10,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:10,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924522657] [2024-11-27 19:54:10,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924522657] [2024-11-27 19:54:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924522657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:10,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:10,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:54:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931642003] [2024-11-27 19:54:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:10,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:54:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:10,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:54:10,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:54:10,430 INFO L87 Difference]: Start difference. First operand 555 states and 886 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:10,583 INFO L93 Difference]: Finished difference Result 1089 states and 1753 transitions. [2024-11-27 19:54:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-27 19:54:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:10,589 INFO L225 Difference]: With dead ends: 1089 [2024-11-27 19:54:10,589 INFO L226 Difference]: Without dead ends: 564 [2024-11-27 19:54:10,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:54:10,594 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 38 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:10,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4298 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:54:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-27 19:54:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 555. [2024-11-27 19:54:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 429 states have (on average 1.6037296037296038) internal successors, (688), 444 states have internal predecessors, (688), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 885 transitions. [2024-11-27 19:54:10,627 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 885 transitions. Word has length 113 [2024-11-27 19:54:10,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:10,627 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 885 transitions. [2024-11-27 19:54:10,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:10,628 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 885 transitions. [2024-11-27 19:54:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 19:54:10,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:10,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:10,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:54:10,633 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:10,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash -783187423, now seen corresponding path program 1 times [2024-11-27 19:54:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058931227] [2024-11-27 19:54:10,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:10,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:10,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058931227] [2024-11-27 19:54:10,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058931227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:10,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:10,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:10,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542709654] [2024-11-27 19:54:10,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:10,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:10,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:10,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:10,796 INFO L87 Difference]: Start difference. First operand 555 states and 885 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:10,903 INFO L93 Difference]: Finished difference Result 1089 states and 1752 transitions. [2024-11-27 19:54:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:10,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-27 19:54:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:10,910 INFO L225 Difference]: With dead ends: 1089 [2024-11-27 19:54:10,910 INFO L226 Difference]: Without dead ends: 564 [2024-11-27 19:54:10,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:54:10,915 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 45 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:10,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2550 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-27 19:54:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 555. [2024-11-27 19:54:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 429 states have (on average 1.6013986013986015) internal successors, (687), 444 states have internal predecessors, (687), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 884 transitions. [2024-11-27 19:54:10,954 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 884 transitions. Word has length 114 [2024-11-27 19:54:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:10,955 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 884 transitions. [2024-11-27 19:54:10,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 884 transitions. [2024-11-27 19:54:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 19:54:10,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:10,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:10,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:54:10,960 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:10,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1635297055, now seen corresponding path program 1 times [2024-11-27 19:54:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:10,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507733308] [2024-11-27 19:54:10,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:54:11,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:11,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507733308] [2024-11-27 19:54:11,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507733308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:11,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:11,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:54:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835713952] [2024-11-27 19:54:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:11,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:11,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:11,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:11,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:11,111 INFO L87 Difference]: Start difference. First operand 555 states and 884 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:11,191 INFO L93 Difference]: Finished difference Result 1076 states and 1731 transitions. [2024-11-27 19:54:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:54:11,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-27 19:54:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:11,197 INFO L225 Difference]: With dead ends: 1076 [2024-11-27 19:54:11,198 INFO L226 Difference]: Without dead ends: 557 [2024-11-27 19:54:11,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:54:11,202 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 15 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:11,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2526 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-27 19:54:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-27 19:54:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 431 states have (on average 1.5962877030162412) internal successors, (688), 446 states have internal predecessors, (688), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-27 19:54:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 885 transitions. [2024-11-27 19:54:11,234 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 885 transitions. Word has length 114 [2024-11-27 19:54:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:11,234 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 885 transitions. [2024-11-27 19:54:11,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:54:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 885 transitions. [2024-11-27 19:54:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 19:54:11,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:11,238 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:11,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 19:54:11,238 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:11,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash -237453815, now seen corresponding path program 1 times [2024-11-27 19:54:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:11,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745103428] [2024-11-27 19:54:11,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 19:54:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745103428] [2024-11-27 19:54:11,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745103428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:11,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655696899] [2024-11-27 19:54:11,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:11,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:11,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:11,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:54:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:11,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:54:11,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 19:54:12,133 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:12,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655696899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:12,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:12,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-27 19:54:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981793223] [2024-11-27 19:54:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:12,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:12,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:12,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:54:12,137 INFO L87 Difference]: Start difference. First operand 557 states and 885 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:13,155 INFO L93 Difference]: Finished difference Result 1079 states and 1760 transitions. [2024-11-27 19:54:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2024-11-27 19:54:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:13,165 INFO L225 Difference]: With dead ends: 1079 [2024-11-27 19:54:13,166 INFO L226 Difference]: Without dead ends: 565 [2024-11-27 19:54:13,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:13,171 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 827 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:13,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2150 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 19:54:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-27 19:54:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-27 19:54:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 438 states have (on average 1.5981735159817352) internal successors, (700), 453 states have internal predecessors, (700), 99 states have call successors, (99), 28 states have call predecessors, (99), 27 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2024-11-27 19:54:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 898 transitions. [2024-11-27 19:54:13,214 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 898 transitions. Word has length 115 [2024-11-27 19:54:13,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:13,215 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 898 transitions. [2024-11-27 19:54:13,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 898 transitions. [2024-11-27 19:54:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 19:54:13,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:13,221 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:13,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:54:13,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 19:54:13,425 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:13,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:13,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1601533737, now seen corresponding path program 1 times [2024-11-27 19:54:13,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:13,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998346435] [2024-11-27 19:54:13,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:13,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 19:54:13,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998346435] [2024-11-27 19:54:13,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998346435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40604205] [2024-11-27 19:54:13,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:13,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:13,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:13,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:13,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:54:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:14,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:54:14,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 19:54:14,309 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40604205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:14,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:14,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-27 19:54:14,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091684115] [2024-11-27 19:54:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:14,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:14,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:14,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:54:14,315 INFO L87 Difference]: Start difference. First operand 565 states and 898 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:15,079 INFO L93 Difference]: Finished difference Result 1095 states and 1783 transitions. [2024-11-27 19:54:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:15,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2024-11-27 19:54:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:15,085 INFO L225 Difference]: With dead ends: 1095 [2024-11-27 19:54:15,085 INFO L226 Difference]: Without dead ends: 573 [2024-11-27 19:54:15,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:15,089 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 824 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:15,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2147 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:54:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-27 19:54:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-11-27 19:54:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 445 states have (on average 1.6) internal successors, (712), 460 states have internal predecessors, (712), 99 states have call successors, (99), 29 states have call predecessors, (99), 28 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-11-27 19:54:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 911 transitions. [2024-11-27 19:54:15,127 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 911 transitions. Word has length 118 [2024-11-27 19:54:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:15,127 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 911 transitions. [2024-11-27 19:54:15,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:15,128 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 911 transitions. [2024-11-27 19:54:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-27 19:54:15,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:15,132 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:15,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:54:15,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 19:54:15,336 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:15,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash 469119109, now seen corresponding path program 1 times [2024-11-27 19:54:15,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:15,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222325520] [2024-11-27 19:54:15,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:15,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 19:54:15,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222325520] [2024-11-27 19:54:15,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222325520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618361092] [2024-11-27 19:54:15,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:15,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:15,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:15,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:54:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:15,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:54:15,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 19:54:16,071 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:16,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618361092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:16,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:16,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-27 19:54:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806365581] [2024-11-27 19:54:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:16,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:16,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:16,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:54:16,073 INFO L87 Difference]: Start difference. First operand 573 states and 911 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:16,898 INFO L93 Difference]: Finished difference Result 1111 states and 1806 transitions. [2024-11-27 19:54:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:16,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2024-11-27 19:54:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:16,909 INFO L225 Difference]: With dead ends: 1111 [2024-11-27 19:54:16,910 INFO L226 Difference]: Without dead ends: 581 [2024-11-27 19:54:16,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:16,915 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 818 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:16,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2144 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:54:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-27 19:54:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-27 19:54:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 452 states have (on average 1.6017699115044248) internal successors, (724), 467 states have internal predecessors, (724), 99 states have call successors, (99), 30 states have call predecessors, (99), 29 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-11-27 19:54:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 924 transitions. [2024-11-27 19:54:16,967 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 924 transitions. Word has length 121 [2024-11-27 19:54:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:16,967 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 924 transitions. [2024-11-27 19:54:16,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 924 transitions. [2024-11-27 19:54:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 19:54:16,974 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:16,974 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:16,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 19:54:17,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 19:54:17,178 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:17,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1813490077, now seen corresponding path program 1 times [2024-11-27 19:54:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:17,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819882800] [2024-11-27 19:54:17,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:17,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 19:54:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819882800] [2024-11-27 19:54:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819882800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576414769] [2024-11-27 19:54:17,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:17,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:17,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:17,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:54:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:17,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:54:17,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 19:54:18,067 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:18,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576414769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:18,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:18,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-27 19:54:18,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317862833] [2024-11-27 19:54:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:18,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:18,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:18,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:54:18,073 INFO L87 Difference]: Start difference. First operand 581 states and 924 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:19,058 INFO L93 Difference]: Finished difference Result 1127 states and 1829 transitions. [2024-11-27 19:54:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:19,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-11-27 19:54:19,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:19,065 INFO L225 Difference]: With dead ends: 1127 [2024-11-27 19:54:19,065 INFO L226 Difference]: Without dead ends: 589 [2024-11-27 19:54:19,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:19,070 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 797 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:19,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 2141 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 19:54:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-27 19:54:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2024-11-27 19:54:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 459 states have (on average 1.6034858387799564) internal successors, (736), 474 states have internal predecessors, (736), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-27 19:54:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 937 transitions. [2024-11-27 19:54:19,109 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 937 transitions. Word has length 124 [2024-11-27 19:54:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:19,109 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 937 transitions. [2024-11-27 19:54:19,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 937 transitions. [2024-11-27 19:54:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 19:54:19,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:19,116 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:19,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:54:19,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:19,320 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:19,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:19,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1656965887, now seen corresponding path program 1 times [2024-11-27 19:54:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436258984] [2024-11-27 19:54:19,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 19:54:19,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436258984] [2024-11-27 19:54:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436258984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494928883] [2024-11-27 19:54:19,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:19,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:19,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:19,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:19,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:54:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:20,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:54:20,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 19:54:20,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494928883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:20,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:20,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:54:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847240820] [2024-11-27 19:54:20,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:20,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:20,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:20,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:54:20,254 INFO L87 Difference]: Start difference. First operand 589 states and 937 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:21,034 INFO L93 Difference]: Finished difference Result 1687 states and 2759 transitions. [2024-11-27 19:54:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:54:21,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-27 19:54:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:21,045 INFO L225 Difference]: With dead ends: 1687 [2024-11-27 19:54:21,045 INFO L226 Difference]: Without dead ends: 1141 [2024-11-27 19:54:21,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:54:21,050 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 794 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:21,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 3273 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:54:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-27 19:54:21,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1133. [2024-11-27 19:54:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 881 states have (on average 1.6186152099886493) internal successors, (1426), 912 states have internal predecessors, (1426), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2024-11-27 19:54:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1836 transitions. [2024-11-27 19:54:21,171 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1836 transitions. Word has length 127 [2024-11-27 19:54:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:21,171 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1836 transitions. [2024-11-27 19:54:21,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:54:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1836 transitions. [2024-11-27 19:54:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 19:54:21,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:21,174 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:21,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 19:54:21,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:21,375 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:21,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1046436336, now seen corresponding path program 1 times [2024-11-27 19:54:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:21,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123387388] [2024-11-27 19:54:21,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 19:54:21,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123387388] [2024-11-27 19:54:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123387388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415391552] [2024-11-27 19:54:21,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:21,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:21,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:21,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:21,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:54:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:22,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 19:54:22,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 19:54:22,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:22,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415391552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:22,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:22,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-27 19:54:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695174450] [2024-11-27 19:54:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:22,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:54:22,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:22,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:54:22,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:22,110 INFO L87 Difference]: Start difference. First operand 1133 states and 1836 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:54:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:22,271 INFO L93 Difference]: Finished difference Result 2760 states and 4542 transitions. [2024-11-27 19:54:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:54:22,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-11-27 19:54:22,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:22,290 INFO L225 Difference]: With dead ends: 2760 [2024-11-27 19:54:22,290 INFO L226 Difference]: Without dead ends: 1671 [2024-11-27 19:54:22,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:22,300 INFO L435 NwaCegarLoop]: 1642 mSDtfsCounter, 825 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 2500 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 [2024-11-27 19:54:22,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 2500 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2024-11-27 19:54:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1133. [2024-11-27 19:54:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 881 states have (on average 1.6174801362088536) internal successors, (1425), 912 states have internal predecessors, (1425), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2024-11-27 19:54:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1835 transitions. [2024-11-27 19:54:22,406 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1835 transitions. Word has length 132 [2024-11-27 19:54:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:22,407 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1835 transitions. [2024-11-27 19:54:22,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:54:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1835 transitions. [2024-11-27 19:54:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 19:54:22,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:22,412 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:22,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 19:54:22,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 19:54:22,613 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:22,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:22,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1748036210, now seen corresponding path program 1 times [2024-11-27 19:54:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731575405] [2024-11-27 19:54:22,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:22,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 19:54:23,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:23,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731575405] [2024-11-27 19:54:23,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731575405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:23,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173221136] [2024-11-27 19:54:23,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:23,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:23,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:23,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:23,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 19:54:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:23,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:54:23,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 19:54:23,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:23,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173221136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:23,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:23,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:54:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977150101] [2024-11-27 19:54:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:23,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:23,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:23,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:23,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:54:23,745 INFO L87 Difference]: Start difference. First operand 1133 states and 1835 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:54:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:23,936 INFO L93 Difference]: Finished difference Result 2845 states and 4632 transitions. [2024-11-27 19:54:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:23,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-11-27 19:54:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:23,954 INFO L225 Difference]: With dead ends: 2845 [2024-11-27 19:54:23,954 INFO L226 Difference]: Without dead ends: 1757 [2024-11-27 19:54:23,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:54:23,964 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 383 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:23,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 3717 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2024-11-27 19:54:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1757. [2024-11-27 19:54:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1369 states have (on average 1.5924032140248356) internal successors, (2180), 1404 states have internal predecessors, (2180), 288 states have call successors, (288), 99 states have call predecessors, (288), 99 states have return successors, (365), 279 states have call predecessors, (365), 284 states have call successors, (365) [2024-11-27 19:54:24,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2833 transitions. [2024-11-27 19:54:24,109 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2833 transitions. Word has length 132 [2024-11-27 19:54:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:24,110 INFO L471 AbstractCegarLoop]: Abstraction has 1757 states and 2833 transitions. [2024-11-27 19:54:24,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:54:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2833 transitions. [2024-11-27 19:54:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 19:54:24,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:24,117 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:24,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 19:54:24,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 19:54:24,320 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:24,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:24,320 INFO L85 PathProgramCache]: Analyzing trace with hash 531882484, now seen corresponding path program 1 times [2024-11-27 19:54:24,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:24,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526667881] [2024-11-27 19:54:24,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:24,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 19:54:24,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526667881] [2024-11-27 19:54:24,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526667881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:24,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736061557] [2024-11-27 19:54:24,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:24,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:24,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:24,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 19:54:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:25,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 19:54:25,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 19:54:25,297 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:25,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736061557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:25,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:25,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2024-11-27 19:54:25,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140094099] [2024-11-27 19:54:25,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:25,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:54:25,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:25,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:54:25,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:25,300 INFO L87 Difference]: Start difference. First operand 1757 states and 2833 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:54:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:25,405 INFO L93 Difference]: Finished difference Result 3188 states and 5133 transitions. [2024-11-27 19:54:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:54:25,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-11-27 19:54:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:25,418 INFO L225 Difference]: With dead ends: 3188 [2024-11-27 19:54:25,418 INFO L226 Difference]: Without dead ends: 1476 [2024-11-27 19:54:25,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:25,427 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 560 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:25,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:54:25,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2024-11-27 19:54:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2024-11-27 19:54:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1147 states have (on average 1.5736704446381866) internal successors, (1805), 1174 states have internal predecessors, (1805), 241 states have call successors, (241), 89 states have call predecessors, (241), 87 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2024-11-27 19:54:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2342 transitions. [2024-11-27 19:54:25,517 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2342 transitions. Word has length 132 [2024-11-27 19:54:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:25,517 INFO L471 AbstractCegarLoop]: Abstraction has 1476 states and 2342 transitions. [2024-11-27 19:54:25,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:54:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2342 transitions. [2024-11-27 19:54:25,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 19:54:25,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:25,523 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:25,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 19:54:25,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:25,724 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:25,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:25,725 INFO L85 PathProgramCache]: Analyzing trace with hash 535747536, now seen corresponding path program 1 times [2024-11-27 19:54:25,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:25,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897384904] [2024-11-27 19:54:25,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-27 19:54:26,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897384904] [2024-11-27 19:54:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897384904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982799645] [2024-11-27 19:54:26,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:26,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:26,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:26,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:26,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 19:54:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:26,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:54:26,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 19:54:26,487 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982799645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 19:54:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976304027] [2024-11-27 19:54:26,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:26,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:26,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:26,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:26,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:54:26,490 INFO L87 Difference]: Start difference. First operand 1476 states and 2342 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:26,828 INFO L93 Difference]: Finished difference Result 2997 states and 4817 transitions. [2024-11-27 19:54:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2024-11-27 19:54:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:26,843 INFO L225 Difference]: With dead ends: 2997 [2024-11-27 19:54:26,843 INFO L226 Difference]: Without dead ends: 1566 [2024-11-27 19:54:26,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:54:26,852 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 144 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:26,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2389 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:54:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-11-27 19:54:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1554. [2024-11-27 19:54:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1223 states have (on average 1.5952575633687653) internal successors, (1951), 1250 states have internal predecessors, (1951), 241 states have call successors, (241), 91 states have call predecessors, (241), 89 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2024-11-27 19:54:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2488 transitions. [2024-11-27 19:54:26,953 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2488 transitions. Word has length 155 [2024-11-27 19:54:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:26,954 INFO L471 AbstractCegarLoop]: Abstraction has 1554 states and 2488 transitions. [2024-11-27 19:54:26,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2488 transitions. [2024-11-27 19:54:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-27 19:54:26,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:26,962 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2024-11-27 19:54:26,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 19:54:27,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 19:54:27,166 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:27,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 417909114, now seen corresponding path program 1 times [2024-11-27 19:54:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656052535] [2024-11-27 19:54:27,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-27 19:54:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656052535] [2024-11-27 19:54:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656052535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570690666] [2024-11-27 19:54:27,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:27,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:27,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:27,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 19:54:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:27,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:54:27,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 19:54:27,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:27,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570690666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:27,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:28,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 19:54:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502186982] [2024-11-27 19:54:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:28,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:28,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:28,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:54:28,002 INFO L87 Difference]: Start difference. First operand 1554 states and 2488 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:28,442 INFO L93 Difference]: Finished difference Result 3159 states and 5111 transitions. [2024-11-27 19:54:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:28,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2024-11-27 19:54:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:28,457 INFO L225 Difference]: With dead ends: 3159 [2024-11-27 19:54:28,457 INFO L226 Difference]: Without dead ends: 1650 [2024-11-27 19:54:28,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:54:28,466 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 142 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:28,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2386 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:54:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2024-11-27 19:54:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1632. [2024-11-27 19:54:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1299 states have (on average 1.6143187066974596) internal successors, (2097), 1326 states have internal predecessors, (2097), 241 states have call successors, (241), 93 states have call predecessors, (241), 91 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2024-11-27 19:54:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2634 transitions. [2024-11-27 19:54:28,573 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2634 transitions. Word has length 160 [2024-11-27 19:54:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:28,574 INFO L471 AbstractCegarLoop]: Abstraction has 1632 states and 2634 transitions. [2024-11-27 19:54:28,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2634 transitions. [2024-11-27 19:54:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-27 19:54:28,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:28,582 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2024-11-27 19:54:28,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 19:54:28,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:28,786 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:28,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:28,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1379141462, now seen corresponding path program 1 times [2024-11-27 19:54:28,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:28,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808362037] [2024-11-27 19:54:28,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-27 19:54:29,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:29,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808362037] [2024-11-27 19:54:29,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808362037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:29,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381265686] [2024-11-27 19:54:29,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:29,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:29,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:29,160 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:29,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 19:54:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:29,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:54:29,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 19:54:29,663 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:29,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381265686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:29,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 19:54:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130915932] [2024-11-27 19:54:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:29,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:29,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:29,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:54:29,666 INFO L87 Difference]: Start difference. First operand 1632 states and 2634 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:30,017 INFO L93 Difference]: Finished difference Result 3321 states and 5405 transitions. [2024-11-27 19:54:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:30,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2024-11-27 19:54:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:30,033 INFO L225 Difference]: With dead ends: 3321 [2024-11-27 19:54:30,033 INFO L226 Difference]: Without dead ends: 1734 [2024-11-27 19:54:30,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:54:30,041 INFO L435 NwaCegarLoop]: 802 mSDtfsCounter, 140 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:30,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2383 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:54:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-27 19:54:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1710. [2024-11-27 19:54:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1375 states have (on average 1.6312727272727272) internal successors, (2243), 1402 states have internal predecessors, (2243), 241 states have call successors, (241), 95 states have call predecessors, (241), 93 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2024-11-27 19:54:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2780 transitions. [2024-11-27 19:54:30,180 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2780 transitions. Word has length 164 [2024-11-27 19:54:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:30,181 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 2780 transitions. [2024-11-27 19:54:30,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2780 transitions. [2024-11-27 19:54:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-27 19:54:30,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:30,189 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:30,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 19:54:30,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:30,392 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:30,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash -839883856, now seen corresponding path program 1 times [2024-11-27 19:54:30,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:30,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664480641] [2024-11-27 19:54:30,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:30,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-27 19:54:30,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:30,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664480641] [2024-11-27 19:54:30,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664480641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:30,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622569973] [2024-11-27 19:54:30,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:30,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:30,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:30,834 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:30,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 19:54:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:31,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:54:31,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 19:54:31,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:31,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622569973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:31,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:31,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 19:54:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121993714] [2024-11-27 19:54:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:31,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:31,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:31,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:54:31,242 INFO L87 Difference]: Start difference. First operand 1710 states and 2780 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:31,520 INFO L93 Difference]: Finished difference Result 3483 states and 5699 transitions. [2024-11-27 19:54:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:31,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2024-11-27 19:54:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:31,533 INFO L225 Difference]: With dead ends: 3483 [2024-11-27 19:54:31,534 INFO L226 Difference]: Without dead ends: 1818 [2024-11-27 19:54:31,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:54:31,541 INFO L435 NwaCegarLoop]: 801 mSDtfsCounter, 138 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:31,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2380 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:54:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2024-11-27 19:54:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1788. [2024-11-27 19:54:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1451 states have (on average 1.6464507236388697) internal successors, (2389), 1478 states have internal predecessors, (2389), 241 states have call successors, (241), 97 states have call predecessors, (241), 95 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2024-11-27 19:54:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2926 transitions. [2024-11-27 19:54:31,625 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2926 transitions. Word has length 167 [2024-11-27 19:54:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:31,626 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 2926 transitions. [2024-11-27 19:54:31,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2926 transitions. [2024-11-27 19:54:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-27 19:54:31,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:31,632 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2024-11-27 19:54:31,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 19:54:31,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 19:54:31,834 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:31,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:31,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1217168256, now seen corresponding path program 1 times [2024-11-27 19:54:31,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:31,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039212938] [2024-11-27 19:54:31,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:31,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-27 19:54:32,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:32,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039212938] [2024-11-27 19:54:32,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039212938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:32,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306469791] [2024-11-27 19:54:32,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:32,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:32,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:32,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 19:54:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:32,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:54:32,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-27 19:54:32,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306469791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:32,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:32,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-27 19:54:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910625774] [2024-11-27 19:54:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:32,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:54:32,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:32,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:54:32,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:54:32,726 INFO L87 Difference]: Start difference. First operand 1788 states and 2926 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:33,050 INFO L93 Difference]: Finished difference Result 3645 states and 5993 transitions. [2024-11-27 19:54:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:54:33,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2024-11-27 19:54:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:33,071 INFO L225 Difference]: With dead ends: 3645 [2024-11-27 19:54:33,072 INFO L226 Difference]: Without dead ends: 1902 [2024-11-27 19:54:33,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:54:33,081 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 136 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:33,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2373 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:54:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2024-11-27 19:54:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1866. [2024-11-27 19:54:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1527 states have (on average 1.6601178781925343) internal successors, (2535), 1554 states have internal predecessors, (2535), 241 states have call successors, (241), 99 states have call predecessors, (241), 97 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2024-11-27 19:54:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 3072 transitions. [2024-11-27 19:54:33,191 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 3072 transitions. Word has length 169 [2024-11-27 19:54:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:33,192 INFO L471 AbstractCegarLoop]: Abstraction has 1866 states and 3072 transitions. [2024-11-27 19:54:33,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:54:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 3072 transitions. [2024-11-27 19:54:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-27 19:54:33,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:33,200 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 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] [2024-11-27 19:54:33,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 19:54:33,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:33,401 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:33,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1933057937, now seen corresponding path program 1 times [2024-11-27 19:54:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:33,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213398077] [2024-11-27 19:54:33,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-27 19:54:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:33,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213398077] [2024-11-27 19:54:33,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213398077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:33,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549588792] [2024-11-27 19:54:33,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:33,755 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:33,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 19:54:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:34,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 19:54:34,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-27 19:54:34,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549588792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:34,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:34,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2024-11-27 19:54:34,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886289200] [2024-11-27 19:54:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:34,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 19:54:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:34,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 19:54:34,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:54:34,528 INFO L87 Difference]: Start difference. First operand 1866 states and 3072 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 19:54:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:38,398 INFO L93 Difference]: Finished difference Result 5797 states and 9693 transitions. [2024-11-27 19:54:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 19:54:38,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 169 [2024-11-27 19:54:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:38,433 INFO L225 Difference]: With dead ends: 5797 [2024-11-27 19:54:38,434 INFO L226 Difference]: Without dead ends: 3612 [2024-11-27 19:54:38,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:54:38,450 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 1943 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 4637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:38,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2052 Valid, 2439 Invalid, 4637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [461 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 19:54:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2024-11-27 19:54:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3592. [2024-11-27 19:54:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 2895 states have (on average 1.6635578583765112) internal successors, (4816), 2975 states have internal predecessors, (4816), 499 states have call successors, (499), 179 states have call predecessors, (499), 197 states have return successors, (641), 495 states have call predecessors, (641), 495 states have call successors, (641) [2024-11-27 19:54:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5956 transitions. [2024-11-27 19:54:38,629 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5956 transitions. Word has length 169 [2024-11-27 19:54:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:38,630 INFO L471 AbstractCegarLoop]: Abstraction has 3592 states and 5956 transitions. [2024-11-27 19:54:38,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 19:54:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5956 transitions. [2024-11-27 19:54:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-27 19:54:38,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:38,706 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 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] [2024-11-27 19:54:38,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 19:54:38,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:38,907 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:38,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1104760433, now seen corresponding path program 1 times [2024-11-27 19:54:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060102291] [2024-11-27 19:54:38,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-27 19:54:39,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060102291] [2024-11-27 19:54:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060102291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:39,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:54:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 19:54:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635694834] [2024-11-27 19:54:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:39,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 19:54:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:39,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:54:39,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:54:39,094 INFO L87 Difference]: Start difference. First operand 3592 states and 5956 transitions. Second operand has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-11-27 19:54:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:39,349 INFO L93 Difference]: Finished difference Result 7010 states and 11653 transitions. [2024-11-27 19:54:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 19:54:39,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 172 [2024-11-27 19:54:39,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:39,376 INFO L225 Difference]: With dead ends: 7010 [2024-11-27 19:54:39,376 INFO L226 Difference]: Without dead ends: 3325 [2024-11-27 19:54:39,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:54:39,392 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 32 mSDsluCounter, 5021 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5863 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:39,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 5863 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:54:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2024-11-27 19:54:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3313. [2024-11-27 19:54:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 2716 states have (on average 1.6829896907216495) internal successors, (4571), 2783 states have internal predecessors, (4571), 419 states have call successors, (419), 167 states have call predecessors, (419), 177 states have return successors, (511), 410 states have call predecessors, (511), 415 states have call successors, (511) [2024-11-27 19:54:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 5501 transitions. [2024-11-27 19:54:39,546 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 5501 transitions. Word has length 172 [2024-11-27 19:54:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:39,546 INFO L471 AbstractCegarLoop]: Abstraction has 3313 states and 5501 transitions. [2024-11-27 19:54:39,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-11-27 19:54:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 5501 transitions. [2024-11-27 19:54:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-27 19:54:39,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:39,566 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 19:54:39,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 19:54:39,566 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:39,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:39,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2103071852, now seen corresponding path program 1 times [2024-11-27 19:54:39,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:39,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643648609] [2024-11-27 19:54:39,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:39,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 36 proven. 99 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2024-11-27 19:54:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643648609] [2024-11-27 19:54:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643648609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890150625] [2024-11-27 19:54:40,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:40,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:40,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:40,607 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:40,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 19:54:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:41,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 19:54:41,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 341 proven. 50 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-11-27 19:54:41,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:54:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 57 proven. 93 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2024-11-27 19:54:43,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890150625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:54:43,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:54:43,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 14] total 27 [2024-11-27 19:54:43,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835341635] [2024-11-27 19:54:43,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:54:43,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 19:54:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:43,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 19:54:43,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2024-11-27 19:54:43,283 INFO L87 Difference]: Start difference. First operand 3313 states and 5501 transitions. Second operand has 27 states, 25 states have (on average 14.76) internal successors, (369), 23 states have internal predecessors, (369), 17 states have call successors, (89), 8 states have call predecessors, (89), 14 states have return successors, (90), 20 states have call predecessors, (90), 17 states have call successors, (90) [2024-11-27 19:55:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:48,764 INFO L93 Difference]: Finished difference Result 49655 states and 87911 transitions. [2024-11-27 19:55:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 430 states. [2024-11-27 19:55:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 14.76) internal successors, (369), 23 states have internal predecessors, (369), 17 states have call successors, (89), 8 states have call predecessors, (89), 14 states have return successors, (90), 20 states have call predecessors, (90), 17 states have call successors, (90) Word has length 461 [2024-11-27 19:55:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:49,144 INFO L225 Difference]: With dead ends: 49655 [2024-11-27 19:55:49,144 INFO L226 Difference]: Without dead ends: 46282 [2024-11-27 19:55:49,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1482 GetRequests, 1033 SyntacticMatches, 4 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93057 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=16349, Invalid=183013, Unknown=0, NotChecked=0, Total=199362 [2024-11-27 19:55:49,470 INFO L435 NwaCegarLoop]: 2237 mSDtfsCounter, 60358 mSDsluCounter, 20030 mSDsCounter, 0 mSdLazyCounter, 69349 mSolverCounterSat, 21641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60372 SdHoareTripleChecker+Valid, 22267 SdHoareTripleChecker+Invalid, 90990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 21641 IncrementalHoareTripleChecker+Valid, 69349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:49,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60372 Valid, 22267 Invalid, 90990 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [21641 Valid, 69349 Invalid, 0 Unknown, 0 Unchecked, 48.3s Time] [2024-11-27 19:55:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46282 states. [2024-11-27 19:55:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46282 to 38289. [2024-11-27 19:55:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38289 states, 31400 states have (on average 1.6643949044585988) internal successors, (52262), 32228 states have internal predecessors, (52262), 4554 states have call successors, (4554), 1988 states have call predecessors, (4554), 2334 states have return successors, (7157), 4648 states have call predecessors, (7157), 4536 states have call successors, (7157) [2024-11-27 19:55:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38289 states to 38289 states and 63973 transitions. [2024-11-27 19:55:53,338 INFO L78 Accepts]: Start accepts. Automaton has 38289 states and 63973 transitions. Word has length 461 [2024-11-27 19:55:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:53,339 INFO L471 AbstractCegarLoop]: Abstraction has 38289 states and 63973 transitions. [2024-11-27 19:55:53,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 14.76) internal successors, (369), 23 states have internal predecessors, (369), 17 states have call successors, (89), 8 states have call predecessors, (89), 14 states have return successors, (90), 20 states have call predecessors, (90), 17 states have call successors, (90) [2024-11-27 19:55:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 38289 states and 63973 transitions. [2024-11-27 19:55:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-27 19:55:53,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:53,549 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:53,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 19:55:53,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:53,754 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:53,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash 774536624, now seen corresponding path program 1 times [2024-11-27 19:55:53,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:53,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700977932] [2024-11-27 19:55:53,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:53,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 61 proven. 70 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2024-11-27 19:55:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:54,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700977932] [2024-11-27 19:55:54,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700977932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169460266] [2024-11-27 19:55:54,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:54,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:54,869 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:54,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 19:55:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:55,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 3389 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:55:55,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2024-11-27 19:55:56,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:55:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169460266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:55:56,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:55:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-27 19:55:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104541004] [2024-11-27 19:55:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:56,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:55:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:56,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:55:56,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:55:56,119 INFO L87 Difference]: Start difference. First operand 38289 states and 63973 transitions. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 6 states have internal predecessors, (244), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-27 19:55:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:59,036 INFO L93 Difference]: Finished difference Result 77036 states and 129316 transitions. [2024-11-27 19:55:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:55:59,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 6 states have internal predecessors, (244), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) Word has length 515 [2024-11-27 19:55:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:59,335 INFO L225 Difference]: With dead ends: 77036 [2024-11-27 19:55:59,336 INFO L226 Difference]: Without dead ends: 38829 [2024-11-27 19:55:59,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:55:59,579 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 0 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5153 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:59,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5153 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:55:59,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38829 states. [2024-11-27 19:56:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38829 to 38703. [2024-11-27 19:56:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38703 states, 31724 states have (on average 1.6576093809103518) internal successors, (52586), 32594 states have internal predecessors, (52586), 4554 states have call successors, (4554), 1988 states have call predecessors, (4554), 2424 states have return successors, (7334), 4696 states have call predecessors, (7334), 4536 states have call successors, (7334) [2024-11-27 19:56:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38703 states to 38703 states and 64474 transitions. [2024-11-27 19:56:03,060 INFO L78 Accepts]: Start accepts. Automaton has 38703 states and 64474 transitions. Word has length 515 [2024-11-27 19:56:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:03,062 INFO L471 AbstractCegarLoop]: Abstraction has 38703 states and 64474 transitions. [2024-11-27 19:56:03,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 6 states have internal predecessors, (244), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-27 19:56:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 38703 states and 64474 transitions. [2024-11-27 19:56:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-27 19:56:03,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:03,306 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 19:56:03,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 19:56:03,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:03,507 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:03,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1815585604, now seen corresponding path program 1 times [2024-11-27 19:56:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:03,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103401652] [2024-11-27 19:56:03,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:03,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 90 proven. 92 refuted. 0 times theorem prover too weak. 1443 trivial. 0 not checked. [2024-11-27 19:56:04,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:04,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103401652] [2024-11-27 19:56:04,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103401652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:04,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887244834] [2024-11-27 19:56:04,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:04,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:04,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:04,956 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:04,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 19:56:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:05,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 3474 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:56:05,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1058 proven. 26 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-11-27 19:56:06,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:56:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 118 proven. 101 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2024-11-27 19:56:07,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887244834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:56:07,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:56:07,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2024-11-27 19:56:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623759231] [2024-11-27 19:56:07,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:56:07,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 19:56:07,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:07,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 19:56:07,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-27 19:56:07,707 INFO L87 Difference]: Start difference. First operand 38703 states and 64474 transitions. Second operand has 24 states, 21 states have (on average 24.142857142857142) internal successors, (507), 22 states have internal predecessors, (507), 17 states have call successors, (125), 8 states have call predecessors, (125), 15 states have return successors, (124), 16 states have call predecessors, (124), 17 states have call successors, (124) [2024-11-27 19:56:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:33,437 INFO L93 Difference]: Finished difference Result 148650 states and 261601 transitions. [2024-11-27 19:56:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-27 19:56:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 24.142857142857142) internal successors, (507), 22 states have internal predecessors, (507), 17 states have call successors, (125), 8 states have call predecessors, (125), 15 states have return successors, (124), 16 states have call predecessors, (124), 17 states have call successors, (124) Word has length 555 [2024-11-27 19:56:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:34,980 INFO L225 Difference]: With dead ends: 148650 [2024-11-27 19:56:34,980 INFO L226 Difference]: Without dead ends: 110110 [2024-11-27 19:56:35,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1120 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2280 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1262, Invalid=6220, Unknown=0, NotChecked=0, Total=7482 [2024-11-27 19:56:35,912 INFO L435 NwaCegarLoop]: 636 mSDtfsCounter, 13872 mSDsluCounter, 5824 mSDsCounter, 0 mSdLazyCounter, 19738 mSolverCounterSat, 4856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13872 SdHoareTripleChecker+Valid, 6460 SdHoareTripleChecker+Invalid, 24594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4856 IncrementalHoareTripleChecker+Valid, 19738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:35,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13872 Valid, 6460 Invalid, 24594 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4856 Valid, 19738 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2024-11-27 19:56:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110110 states. [2024-11-27 19:56:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110110 to 90679. [2024-11-27 19:56:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90679 states, 74050 states have (on average 1.6531937879810938) internal successors, (122419), 76409 states have internal predecessors, (122419), 10652 states have call successors, (10652), 4587 states have call predecessors, (10652), 5976 states have return successors, (17604), 11092 states have call predecessors, (17604), 10625 states have call successors, (17604) [2024-11-27 19:56:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90679 states to 90679 states and 150675 transitions. [2024-11-27 19:56:44,849 INFO L78 Accepts]: Start accepts. Automaton has 90679 states and 150675 transitions. Word has length 555 [2024-11-27 19:56:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:44,850 INFO L471 AbstractCegarLoop]: Abstraction has 90679 states and 150675 transitions. [2024-11-27 19:56:44,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 24.142857142857142) internal successors, (507), 22 states have internal predecessors, (507), 17 states have call successors, (125), 8 states have call predecessors, (125), 15 states have return successors, (124), 16 states have call predecessors, (124), 17 states have call successors, (124) [2024-11-27 19:56:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 90679 states and 150675 transitions. [2024-11-27 19:56:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2024-11-27 19:56:45,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:45,176 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 19:56:45,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 19:56:45,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:45,381 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:45,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1667962929, now seen corresponding path program 1 times [2024-11-27 19:56:45,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:45,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518463262] [2024-11-27 19:56:45,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:45,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 92 proven. 102 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2024-11-27 19:56:46,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518463262] [2024-11-27 19:56:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518463262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:46,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624229725] [2024-11-27 19:56:46,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:46,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:46,119 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:46,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa008f5c-373b-44fd-aa3e-1ca4abc910d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 19:56:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:47,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 3474 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 19:56:47,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 788 proven. 4 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2024-11-27 19:56:47,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:56:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 92 proven. 102 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2024-11-27 19:56:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624229725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:56:48,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:56:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-27 19:56:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588013413] [2024-11-27 19:56:48,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:56:48,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 19:56:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:48,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 19:56:48,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:56:48,685 INFO L87 Difference]: Start difference. First operand 90679 states and 150675 transitions. Second operand has 18 states, 18 states have (on average 24.944444444444443) internal successors, (449), 18 states have internal predecessors, (449), 11 states have call successors, (104), 7 states have call predecessors, (104), 11 states have return successors, (105), 12 states have call predecessors, (105), 11 states have call successors, (105)