./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC --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 d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:42:21,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:42:21,938 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:42:21,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:42:21,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:42:22,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:42:22,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:42:22,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:42:22,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:42:22,006 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:42:22,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:42:22,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:42:22,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:42:22,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:42:22,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:42:22,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:42:22,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:42:22,010 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:22,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:22,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:22,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:42:22,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:42:22,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:42:22,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:42:22,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:42:22,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:42:22,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:42:22,014 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_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC 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 -> d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 [2024-11-24 01:42:22,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:42:22,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:42:22,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:42:22,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:42:22,423 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:42:22,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2024-11-24 01:42:25,921 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/data/67eb91300/9cf5adba0c1849829e0aad822080437e/FLAG8b9ea02ec [2024-11-24 01:42:26,472 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:42:26,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2024-11-24 01:42:26,516 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/data/67eb91300/9cf5adba0c1849829e0aad822080437e/FLAG8b9ea02ec [2024-11-24 01:42:26,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/data/67eb91300/9cf5adba0c1849829e0aad822080437e [2024-11-24 01:42:26,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:42:26,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:42:26,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:26,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:42:26,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:42:26,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:26" (1/1) ... [2024-11-24 01:42:26,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de89cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:26, skipping insertion in model container [2024-11-24 01:42:26,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:26" (1/1) ... [2024-11-24 01:42:26,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:42:27,425 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_7b0c95b6-dace-4c6c-b945-68e9a307eafa/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2024-11-24 01:42:27,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:27,452 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:42:27,466 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-11-24 01:42:27,468 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [408] [2024-11-24 01:42:27,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [422] [2024-11-24 01:42:27,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [467] [2024-11-24 01:42:27,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2112] [2024-11-24 01:42:27,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2773] [2024-11-24 01:42:27,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3139] [2024-11-24 01:42:27,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3174] [2024-11-24 01:42:27,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3292] [2024-11-24 01:42:27,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3383] [2024-11-24 01:42:27,680 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_7b0c95b6-dace-4c6c-b945-68e9a307eafa/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2024-11-24 01:42:27,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:27,715 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:42:27,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27 WrapperNode [2024-11-24 01:42:27,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:27,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:27,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:42:27,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:42:27,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,842 INFO L138 Inliner]: procedures = 95, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 861 [2024-11-24 01:42:27,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:27,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:42:27,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:42:27,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:42:27,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,945 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-24 01:42:27,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,984 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:27,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:28,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:28,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:28,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:28,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:42:28,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:42:28,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:42:28,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:42:28,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (1/1) ... [2024-11-24 01:42:28,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:28,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:28,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:42:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:42:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:42:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-24 01:42:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-24 01:42:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-24 01:42:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-24 01:42:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-24 01:42:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-24 01:42:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-24 01:42:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-24 01:42:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-24 01:42:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-24 01:42:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-24 01:42:28,179 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-24 01:42:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-24 01:42:28,179 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-24 01:42:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-24 01:42:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-24 01:42:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-24 01:42:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-24 01:42:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-24 01:42:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-24 01:42:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-24 01:42:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-24 01:42:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-24 01:42:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-24 01:42:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-24 01:42:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-24 01:42:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-24 01:42:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-24 01:42:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-24 01:42:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-24 01:42:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-24 01:42:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-24 01:42:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-24 01:42:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-24 01:42:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-24 01:42:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-24 01:42:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-24 01:42:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-24 01:42:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-24 01:42:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-24 01:42:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:42:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:42:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:42:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:42:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 01:42:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-24 01:42:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-24 01:42:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-24 01:42:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-24 01:42:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-24 01:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-24 01:42:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-24 01:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:42:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-24 01:42:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-24 01:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-24 01:42:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-24 01:42:28,496 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:42:28,501 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:42:30,319 INFO L? ?]: Removed 463 outVars from TransFormulas that were not future-live. [2024-11-24 01:42:30,319 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:42:30,369 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:42:30,369 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:42:30,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:30 BoogieIcfgContainer [2024-11-24 01:42:30,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:42:30,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:42:30,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:42:30,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:42:30,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:42:26" (1/3) ... [2024-11-24 01:42:30,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c497bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:30, skipping insertion in model container [2024-11-24 01:42:30,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:27" (2/3) ... [2024-11-24 01:42:30,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c497bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:30, skipping insertion in model container [2024-11-24 01:42:30,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:30" (3/3) ... [2024-11-24 01:42:30,404 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product24.cil.c [2024-11-24 01:42:30,423 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:42:30,426 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product24.cil.c that has 28 procedures, 571 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:42:30,514 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:42:30,539 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;@382b7045, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:42:30,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:42:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 571 states, 439 states have (on average 1.6605922551252847) internal successors, (729), 457 states have internal predecessors, (729), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-24 01:42:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:42:30,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:30,569 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:30,570 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:30,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash -840155450, now seen corresponding path program 1 times [2024-11-24 01:42:30,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:30,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976263712] [2024-11-24 01:42:30,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:30,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:31,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976263712] [2024-11-24 01:42:31,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976263712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:31,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:42:31,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915896440] [2024-11-24 01:42:31,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:31,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:42:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:31,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:42:31,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:42:31,440 INFO L87 Difference]: Start difference. First operand has 571 states, 439 states have (on average 1.6605922551252847) internal successors, (729), 457 states have internal predecessors, (729), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:31,785 INFO L93 Difference]: Finished difference Result 1135 states and 1870 transitions. [2024-11-24 01:42:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:42:31,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-24 01:42:31,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:31,827 INFO L225 Difference]: With dead ends: 1135 [2024-11-24 01:42:31,828 INFO L226 Difference]: Without dead ends: 566 [2024-11-24 01:42:31,841 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 [2024-11-24 01:42:31,845 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 6 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2748 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 [2024-11-24 01:42:31,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2748 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:42:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-24 01:42:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-24 01:42:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 435 states have (on average 1.650574712643678) internal successors, (718), 452 states have internal predecessors, (718), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 923 transitions. [2024-11-24 01:42:31,997 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 923 transitions. Word has length 63 [2024-11-24 01:42:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:31,997 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 923 transitions. [2024-11-24 01:42:31,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 923 transitions. [2024-11-24 01:42:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:42:32,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:32,006 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:32,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:42:32,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:32,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1922954936, now seen corresponding path program 1 times [2024-11-24 01:42:32,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:32,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768128361] [2024-11-24 01:42:32,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:32,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768128361] [2024-11-24 01:42:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768128361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:42:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171968793] [2024-11-24 01:42:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:32,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:42:32,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:32,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:42:32,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:42:32,409 INFO L87 Difference]: Start difference. First operand 566 states and 923 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:32,575 INFO L93 Difference]: Finished difference Result 1115 states and 1823 transitions. [2024-11-24 01:42:32,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:42:32,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2024-11-24 01:42:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:32,589 INFO L225 Difference]: With dead ends: 1115 [2024-11-24 01:42:32,589 INFO L226 Difference]: Without dead ends: 566 [2024-11-24 01:42:32,599 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 [2024-11-24 01:42:32,600 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 4 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:32,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2720 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:42:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-24 01:42:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-24 01:42:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 435 states have (on average 1.6482758620689655) internal successors, (717), 452 states have internal predecessors, (717), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 922 transitions. [2024-11-24 01:42:32,689 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 922 transitions. Word has length 64 [2024-11-24 01:42:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:32,689 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 922 transitions. [2024-11-24 01:42:32,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 922 transitions. [2024-11-24 01:42:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 01:42:32,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:32,693 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:32,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:42:32,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:32,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:32,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1946679426, now seen corresponding path program 1 times [2024-11-24 01:42:32,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109894678] [2024-11-24 01:42:32,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:32,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:33,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:33,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109894678] [2024-11-24 01:42:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109894678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:33,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:33,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:42:33,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356639571] [2024-11-24 01:42:33,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:33,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:42:33,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:33,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:42:33,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:42:33,040 INFO L87 Difference]: Start difference. First operand 566 states and 922 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:33,165 INFO L93 Difference]: Finished difference Result 1115 states and 1822 transitions. [2024-11-24 01:42:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:42:33,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2024-11-24 01:42:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:33,177 INFO L225 Difference]: With dead ends: 1115 [2024-11-24 01:42:33,177 INFO L226 Difference]: Without dead ends: 566 [2024-11-24 01:42:33,184 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 [2024-11-24 01:42:33,186 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 3 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2720 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 [2024-11-24 01:42:33,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2720 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:42:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-24 01:42:33,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-24 01:42:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 435 states have (on average 1.645977011494253) internal successors, (716), 452 states have internal predecessors, (716), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 921 transitions. [2024-11-24 01:42:33,284 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 921 transitions. Word has length 65 [2024-11-24 01:42:33,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:33,285 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 921 transitions. [2024-11-24 01:42:33,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 921 transitions. [2024-11-24 01:42:33,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 01:42:33,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:33,289 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:33,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:42:33,289 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:33,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash 427973124, now seen corresponding path program 1 times [2024-11-24 01:42:33,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236017198] [2024-11-24 01:42:33,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:33,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:33,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236017198] [2024-11-24 01:42:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236017198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:33,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:42:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23903722] [2024-11-24 01:42:33,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:33,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:42:33,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:33,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:42:33,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:42:33,565 INFO L87 Difference]: Start difference. First operand 566 states and 921 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:33,664 INFO L93 Difference]: Finished difference Result 1115 states and 1821 transitions. [2024-11-24 01:42:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:42:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2024-11-24 01:42:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:33,677 INFO L225 Difference]: With dead ends: 1115 [2024-11-24 01:42:33,677 INFO L226 Difference]: Without dead ends: 566 [2024-11-24 01:42:33,681 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 [2024-11-24 01:42:33,682 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 2 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2720 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 [2024-11-24 01:42:33,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2720 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:42:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-24 01:42:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-24 01:42:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 435 states have (on average 1.6436781609195403) internal successors, (715), 452 states have internal predecessors, (715), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 920 transitions. [2024-11-24 01:42:33,744 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 920 transitions. Word has length 66 [2024-11-24 01:42:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:33,746 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 920 transitions. [2024-11-24 01:42:33,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 920 transitions. [2024-11-24 01:42:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-24 01:42:33,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:33,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:33,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:42:33,748 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:33,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash -625569218, now seen corresponding path program 1 times [2024-11-24 01:42:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973159241] [2024-11-24 01:42:33,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:33,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:33,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973159241] [2024-11-24 01:42:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973159241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:33,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:42:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695014982] [2024-11-24 01:42:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:33,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:42:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:33,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:42:33,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:42:33,959 INFO L87 Difference]: Start difference. First operand 566 states and 920 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:34,054 INFO L93 Difference]: Finished difference Result 1115 states and 1820 transitions. [2024-11-24 01:42:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:42:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2024-11-24 01:42:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:34,063 INFO L225 Difference]: With dead ends: 1115 [2024-11-24 01:42:34,063 INFO L226 Difference]: Without dead ends: 566 [2024-11-24 01:42:34,067 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 [2024-11-24 01:42:34,069 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 1 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2720 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 [2024-11-24 01:42:34,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2720 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:42:34,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-24 01:42:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-24 01:42:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 435 states have (on average 1.6413793103448275) internal successors, (714), 452 states have internal predecessors, (714), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 919 transitions. [2024-11-24 01:42:34,117 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 919 transitions. Word has length 67 [2024-11-24 01:42:34,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:34,120 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 919 transitions. [2024-11-24 01:42:34,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 919 transitions. [2024-11-24 01:42:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:42:34,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:34,122 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:34,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:42:34,122 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:34,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash -143930688, now seen corresponding path program 1 times [2024-11-24 01:42:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:34,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32388847] [2024-11-24 01:42:34,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:34,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32388847] [2024-11-24 01:42:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32388847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:42:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670422189] [2024-11-24 01:42:34,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:34,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:42:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:34,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:42:34,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:42:34,473 INFO L87 Difference]: Start difference. First operand 566 states and 919 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 01:42:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:34,718 INFO L93 Difference]: Finished difference Result 1126 states and 1837 transitions. [2024-11-24 01:42:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:42:34,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-11-24 01:42:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:34,728 INFO L225 Difference]: With dead ends: 1126 [2024-11-24 01:42:34,728 INFO L226 Difference]: Without dead ends: 581 [2024-11-24 01:42:34,731 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 [2024-11-24 01:42:34,732 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 91 mSDsluCounter, 4445 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5351 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 [2024-11-24 01:42:34,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5351 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:42:34,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-24 01:42:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2024-11-24 01:42:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 445 states have (on average 1.6382022471910112) internal successors, (729), 464 states have internal predecessors, (729), 104 states have call successors, (104), 28 states have call predecessors, (104), 29 states have return successors, (106), 100 states have call predecessors, (106), 103 states have call successors, (106) [2024-11-24 01:42:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 939 transitions. [2024-11-24 01:42:34,779 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 939 transitions. Word has length 68 [2024-11-24 01:42:34,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:34,779 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 939 transitions. [2024-11-24 01:42:34,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 01:42:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 939 transitions. [2024-11-24 01:42:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:42:34,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:34,785 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:34,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:42:34,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:34,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash 625239327, now seen corresponding path program 1 times [2024-11-24 01:42:34,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:34,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972867366] [2024-11-24 01:42:34,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:34,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:34,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972867366] [2024-11-24 01:42:34,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972867366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:34,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:34,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:42:34,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980799603] [2024-11-24 01:42:34,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:34,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:42:34,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:34,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:42:34,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:42:34,955 INFO L87 Difference]: Start difference. First operand 579 states and 939 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:35,058 INFO L93 Difference]: Finished difference Result 1133 states and 1848 transitions. [2024-11-24 01:42:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:42:35,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-24 01:42:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:35,067 INFO L225 Difference]: With dead ends: 1133 [2024-11-24 01:42:35,067 INFO L226 Difference]: Without dead ends: 575 [2024-11-24 01:42:35,072 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 [2024-11-24 01:42:35,073 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 1 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2715 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 [2024-11-24 01:42:35,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2715 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:42:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-24 01:42:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-11-24 01:42:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 443 states have (on average 1.6388261851015802) internal successors, (726), 461 states have internal predecessors, (726), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 99 states have call predecessors, (103), 102 states have call successors, (103) [2024-11-24 01:42:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 932 transitions. [2024-11-24 01:42:35,118 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 932 transitions. Word has length 68 [2024-11-24 01:42:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:35,118 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 932 transitions. [2024-11-24 01:42:35,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 932 transitions. [2024-11-24 01:42:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 01:42:35,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:35,123 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:35,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:42:35,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:35,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 259741248, now seen corresponding path program 1 times [2024-11-24 01:42:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:35,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894076211] [2024-11-24 01:42:35,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:35,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:35,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:35,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894076211] [2024-11-24 01:42:35,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894076211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:35,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:35,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:42:35,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837806945] [2024-11-24 01:42:35,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:35,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:35,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:35,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:35,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:42:35,382 INFO L87 Difference]: Start difference. First operand 575 states and 932 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:35,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:35,832 INFO L93 Difference]: Finished difference Result 1176 states and 1920 transitions. [2024-11-24 01:42:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:42:35,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2024-11-24 01:42:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:35,841 INFO L225 Difference]: With dead ends: 1176 [2024-11-24 01:42:35,842 INFO L226 Difference]: Without dead ends: 607 [2024-11-24 01:42:35,845 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 [2024-11-24 01:42:35,846 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 72 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4326 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 [2024-11-24 01:42:35,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4326 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:42:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-24 01:42:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 580. [2024-11-24 01:42:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 448 states have (on average 1.625) internal successors, (728), 465 states have internal predecessors, (728), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 933 transitions. [2024-11-24 01:42:35,884 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 933 transitions. Word has length 69 [2024-11-24 01:42:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:35,886 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 933 transitions. [2024-11-24 01:42:35,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 933 transitions. [2024-11-24 01:42:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:42:35,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:35,891 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:35,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:42:35,891 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:35,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1682436771, now seen corresponding path program 1 times [2024-11-24 01:42:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:35,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197964955] [2024-11-24 01:42:35,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:36,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:36,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197964955] [2024-11-24 01:42:36,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197964955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:36,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:36,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:42:36,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817209434] [2024-11-24 01:42:36,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:36,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:36,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:36,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:36,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:42:36,156 INFO L87 Difference]: Start difference. First operand 580 states and 933 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:36,522 INFO L93 Difference]: Finished difference Result 1127 states and 1815 transitions. [2024-11-24 01:42:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2024-11-24 01:42:36,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:36,531 INFO L225 Difference]: With dead ends: 1127 [2024-11-24 01:42:36,531 INFO L226 Difference]: Without dead ends: 598 [2024-11-24 01:42:36,534 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 [2024-11-24 01:42:36,537 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 56 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:36,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4303 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:42:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-24 01:42:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 580. [2024-11-24 01:42:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 448 states have (on average 1.6160714285714286) internal successors, (724), 465 states have internal predecessors, (724), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 929 transitions. [2024-11-24 01:42:36,582 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 929 transitions. Word has length 70 [2024-11-24 01:42:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:36,583 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 929 transitions. [2024-11-24 01:42:36,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 929 transitions. [2024-11-24 01:42:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-24 01:42:36,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:36,586 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:36,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:42:36,586 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:36,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1372410075, now seen corresponding path program 1 times [2024-11-24 01:42:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:36,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814645894] [2024-11-24 01:42:36,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:36,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:36,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814645894] [2024-11-24 01:42:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814645894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:42:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076792255] [2024-11-24 01:42:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:36,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:36,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:36,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:36,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:42:36,832 INFO L87 Difference]: Start difference. First operand 580 states and 929 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:37,170 INFO L93 Difference]: Finished difference Result 1127 states and 1811 transitions. [2024-11-24 01:42:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:37,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-24 01:42:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:37,180 INFO L225 Difference]: With dead ends: 1127 [2024-11-24 01:42:37,181 INFO L226 Difference]: Without dead ends: 598 [2024-11-24 01:42:37,184 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 [2024-11-24 01:42:37,185 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 55 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4298 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 [2024-11-24 01:42:37,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4298 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:42:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-24 01:42:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 580. [2024-11-24 01:42:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 448 states have (on average 1.6071428571428572) internal successors, (720), 465 states have internal predecessors, (720), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 925 transitions. [2024-11-24 01:42:37,226 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 925 transitions. Word has length 71 [2024-11-24 01:42:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:37,226 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 925 transitions. [2024-11-24 01:42:37,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 925 transitions. [2024-11-24 01:42:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-24 01:42:37,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:37,228 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:37,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:42:37,229 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:37,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1550193755, now seen corresponding path program 1 times [2024-11-24 01:42:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51017173] [2024-11-24 01:42:37,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:37,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:37,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51017173] [2024-11-24 01:42:37,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51017173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:37,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:37,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:42:37,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140410509] [2024-11-24 01:42:37,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:37,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:42:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:37,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:42:37,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:42:37,478 INFO L87 Difference]: Start difference. First operand 580 states and 925 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 01:42:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:37,655 INFO L93 Difference]: Finished difference Result 1118 states and 1793 transitions. [2024-11-24 01:42:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:42:37,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2024-11-24 01:42:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:37,662 INFO L225 Difference]: With dead ends: 1118 [2024-11-24 01:42:37,662 INFO L226 Difference]: Without dead ends: 568 [2024-11-24 01:42:37,666 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 [2024-11-24 01:42:37,666 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 94 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5274 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 [2024-11-24 01:42:37,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5274 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:42:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-24 01:42:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 559. [2024-11-24 01:42:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 427 states have (on average 1.5995316159250585) internal successors, (683), 444 states have internal predecessors, (683), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 888 transitions. [2024-11-24 01:42:37,703 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 888 transitions. Word has length 71 [2024-11-24 01:42:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:37,704 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 888 transitions. [2024-11-24 01:42:37,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 01:42:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 888 transitions. [2024-11-24 01:42:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-24 01:42:37,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:37,706 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:37,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:42:37,706 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:37,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1497149592, now seen corresponding path program 1 times [2024-11-24 01:42:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921744954] [2024-11-24 01:42:37,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:37,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:37,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921744954] [2024-11-24 01:42:37,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921744954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:37,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:37,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:42:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140871073] [2024-11-24 01:42:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:37,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:37,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:37,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:37,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:42:37,949 INFO L87 Difference]: Start difference. First operand 559 states and 888 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:38,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:38,133 INFO L93 Difference]: Finished difference Result 1097 states and 1756 transitions. [2024-11-24 01:42:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:38,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-24 01:42:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:38,142 INFO L225 Difference]: With dead ends: 1097 [2024-11-24 01:42:38,142 INFO L226 Difference]: Without dead ends: 568 [2024-11-24 01:42:38,147 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 [2024-11-24 01:42:38,147 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 39 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4303 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 [2024-11-24 01:42:38,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4303 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:42:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-24 01:42:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 559. [2024-11-24 01:42:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 427 states have (on average 1.5971896955503513) internal successors, (682), 444 states have internal predecessors, (682), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 887 transitions. [2024-11-24 01:42:38,187 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 887 transitions. Word has length 72 [2024-11-24 01:42:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:38,188 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 887 transitions. [2024-11-24 01:42:38,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 887 transitions. [2024-11-24 01:42:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 01:42:38,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:38,190 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:38,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:42:38,190 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:38,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash -982875126, now seen corresponding path program 1 times [2024-11-24 01:42:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712883303] [2024-11-24 01:42:38,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:38,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712883303] [2024-11-24 01:42:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712883303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:38,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:38,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:42:38,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020258556] [2024-11-24 01:42:38,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:38,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:38,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:38,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:38,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:42:38,369 INFO L87 Difference]: Start difference. First operand 559 states and 887 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:38,541 INFO L93 Difference]: Finished difference Result 1097 states and 1755 transitions. [2024-11-24 01:42:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:38,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-24 01:42:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:38,550 INFO L225 Difference]: With dead ends: 1097 [2024-11-24 01:42:38,550 INFO L226 Difference]: Without dead ends: 568 [2024-11-24 01:42:38,554 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 [2024-11-24 01:42:38,554 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 38 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4303 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 [2024-11-24 01:42:38,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4303 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:42:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-24 01:42:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 559. [2024-11-24 01:42:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 427 states have (on average 1.594847775175644) internal successors, (681), 444 states have internal predecessors, (681), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 886 transitions. [2024-11-24 01:42:38,589 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 886 transitions. Word has length 73 [2024-11-24 01:42:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:38,589 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 886 transitions. [2024-11-24 01:42:38,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 886 transitions. [2024-11-24 01:42:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-24 01:42:38,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:38,592 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:38,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:42:38,592 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:38,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2134003667, now seen corresponding path program 1 times [2024-11-24 01:42:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:38,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740538761] [2024-11-24 01:42:38,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:38,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740538761] [2024-11-24 01:42:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740538761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:42:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401430031] [2024-11-24 01:42:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:38,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:42:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:38,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:42:38,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:42:38,737 INFO L87 Difference]: Start difference. First operand 559 states and 886 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:38,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:38,826 INFO L93 Difference]: Finished difference Result 1084 states and 1734 transitions. [2024-11-24 01:42:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:42:38,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-24 01:42:38,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:38,834 INFO L225 Difference]: With dead ends: 1084 [2024-11-24 01:42:38,834 INFO L226 Difference]: Without dead ends: 561 [2024-11-24 01:42:38,838 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 [2024-11-24 01:42:38,838 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 16 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2531 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 [2024-11-24 01:42:38,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2531 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:42:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-24 01:42:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-24 01:42:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 429 states have (on average 1.5897435897435896) internal successors, (682), 446 states have internal predecessors, (682), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-24 01:42:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 887 transitions. [2024-11-24 01:42:38,872 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 887 transitions. Word has length 74 [2024-11-24 01:42:38,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:38,872 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 887 transitions. [2024-11-24 01:42:38,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:42:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 887 transitions. [2024-11-24 01:42:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-24 01:42:38,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:38,874 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:38,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:42:38,875 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:38,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2113766847, now seen corresponding path program 1 times [2024-11-24 01:42:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:38,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817647643] [2024-11-24 01:42:38,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:42:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:39,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817647643] [2024-11-24 01:42:39,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817647643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:39,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:39,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:42:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668346368] [2024-11-24 01:42:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:39,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:42:39,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:39,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:42:39,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:42:39,170 INFO L87 Difference]: Start difference. First operand 561 states and 887 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 01:42:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:39,411 INFO L93 Difference]: Finished difference Result 1593 states and 2571 transitions. [2024-11-24 01:42:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:42:39,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-24 01:42:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:39,425 INFO L225 Difference]: With dead ends: 1593 [2024-11-24 01:42:39,425 INFO L226 Difference]: Without dead ends: 1075 [2024-11-24 01:42:39,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:42:39,431 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 836 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:39,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1772 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:42:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2024-11-24 01:42:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1012. [2024-11-24 01:42:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 780 states have (on average 1.6102564102564103) internal successors, (1256), 806 states have internal predecessors, (1256), 182 states have call successors, (182), 51 states have call predecessors, (182), 49 states have return successors, (187), 169 states have call predecessors, (187), 180 states have call successors, (187) [2024-11-24 01:42:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1625 transitions. [2024-11-24 01:42:39,526 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1625 transitions. Word has length 75 [2024-11-24 01:42:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:39,527 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1625 transitions. [2024-11-24 01:42:39,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 01:42:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1625 transitions. [2024-11-24 01:42:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-24 01:42:39,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:39,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:39,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:42:39,535 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:39,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -732599216, now seen corresponding path program 1 times [2024-11-24 01:42:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432291816] [2024-11-24 01:42:39,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:42:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:39,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432291816] [2024-11-24 01:42:39,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432291816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:39,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592801742] [2024-11-24 01:42:39,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:39,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:39,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:39,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:39,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:42:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:40,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:42:40,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:42:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 01:42:40,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:42:40,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592801742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:40,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:42:40,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 01:42:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763044499] [2024-11-24 01:42:40,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:40,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:42:40,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:40,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:42:40,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:42:40,566 INFO L87 Difference]: Start difference. First operand 1012 states and 1625 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-24 01:42:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:41,645 INFO L93 Difference]: Finished difference Result 1997 states and 3287 transitions. [2024-11-24 01:42:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:41,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 130 [2024-11-24 01:42:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:41,657 INFO L225 Difference]: With dead ends: 1997 [2024-11-24 01:42:41,658 INFO L226 Difference]: Without dead ends: 1028 [2024-11-24 01:42:41,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:42:41,666 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 823 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:41,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2140 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:42:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-11-24 01:42:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2024-11-24 01:42:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 794 states have (on average 1.6120906801007557) internal successors, (1280), 820 states have internal predecessors, (1280), 182 states have call successors, (182), 53 states have call predecessors, (182), 51 states have return successors, (189), 169 states have call predecessors, (189), 180 states have call successors, (189) [2024-11-24 01:42:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1651 transitions. [2024-11-24 01:42:41,761 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1651 transitions. Word has length 130 [2024-11-24 01:42:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:41,762 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1651 transitions. [2024-11-24 01:42:41,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-24 01:42:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1651 transitions. [2024-11-24 01:42:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 01:42:41,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:41,768 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:41,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:42:41,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:42:41,969 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:41,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1245042829, now seen corresponding path program 1 times [2024-11-24 01:42:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:41,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993910381] [2024-11-24 01:42:41,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:41,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-24 01:42:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993910381] [2024-11-24 01:42:42,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993910381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842029248] [2024-11-24 01:42:42,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:42,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:42,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:42,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:42,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:42:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:43,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:42:43,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:42:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-24 01:42:43,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:42:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842029248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:43,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:42:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2024-11-24 01:42:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949750263] [2024-11-24 01:42:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:43,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:43,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:43,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:42:43,324 INFO L87 Difference]: Start difference. First operand 1028 states and 1651 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:42:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:44,224 INFO L93 Difference]: Finished difference Result 2614 states and 4208 transitions. [2024-11-24 01:42:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:44,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-24 01:42:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:44,243 INFO L225 Difference]: With dead ends: 2614 [2024-11-24 01:42:44,243 INFO L226 Difference]: Without dead ends: 1629 [2024-11-24 01:42:44,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:42:44,254 INFO L435 NwaCegarLoop]: 1124 mSDtfsCounter, 822 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:44,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 4468 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:42:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2024-11-24 01:42:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1627. [2024-11-24 01:42:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1254 states have (on average 1.5845295055821371) internal successors, (1987), 1283 states have internal predecessors, (1987), 285 states have call successors, (285), 91 states have call predecessors, (285), 87 states have return successors, (319), 268 states have call predecessors, (319), 281 states have call successors, (319) [2024-11-24 01:42:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2591 transitions. [2024-11-24 01:42:44,420 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2591 transitions. Word has length 132 [2024-11-24 01:42:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:44,424 INFO L471 AbstractCegarLoop]: Abstraction has 1627 states and 2591 transitions. [2024-11-24 01:42:44,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 01:42:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2591 transitions. [2024-11-24 01:42:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-24 01:42:44,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:44,432 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:44,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:42:44,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 01:42:44,637 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:44,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash 699112779, now seen corresponding path program 1 times [2024-11-24 01:42:44,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:44,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355037546] [2024-11-24 01:42:44,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 01:42:44,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355037546] [2024-11-24 01:42:44,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355037546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781767798] [2024-11-24 01:42:44,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:44,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:44,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:44,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:42:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:45,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:42:45,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:42:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:42:45,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:42:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781767798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:45,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:42:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 01:42:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63067420] [2024-11-24 01:42:45,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:45,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:42:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:45,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:42:45,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:42:45,672 INFO L87 Difference]: Start difference. First operand 1627 states and 2591 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (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) [2024-11-24 01:42:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:46,836 INFO L93 Difference]: Finished difference Result 3243 states and 5310 transitions. [2024-11-24 01:42:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:46,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (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 133 [2024-11-24 01:42:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:46,857 INFO L225 Difference]: With dead ends: 3243 [2024-11-24 01:42:46,857 INFO L226 Difference]: Without dead ends: 1659 [2024-11-24 01:42:46,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:42:46,872 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 814 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:46,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2137 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:42:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2024-11-24 01:42:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1659. [2024-11-24 01:42:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1282 states have (on average 1.5873634945397816) internal successors, (2035), 1311 states have internal predecessors, (2035), 285 states have call successors, (285), 95 states have call predecessors, (285), 91 states have return successors, (323), 268 states have call predecessors, (323), 281 states have call successors, (323) [2024-11-24 01:42:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2643 transitions. [2024-11-24 01:42:47,031 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2643 transitions. Word has length 133 [2024-11-24 01:42:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:47,032 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2643 transitions. [2024-11-24 01:42:47,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (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) [2024-11-24 01:42:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2643 transitions. [2024-11-24 01:42:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-24 01:42:47,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:47,041 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:47,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:42:47,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 01:42:47,241 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:47,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1222629866, now seen corresponding path program 1 times [2024-11-24 01:42:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775962786] [2024-11-24 01:42:47,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:42:47,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775962786] [2024-11-24 01:42:47,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775962786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313400779] [2024-11-24 01:42:47,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:47,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:47,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:47,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:47,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:42:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:47,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:42:47,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:42:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:42:48,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:42:48,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313400779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:48,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:42:48,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 01:42:48,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422430624] [2024-11-24 01:42:48,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:48,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:42:48,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:48,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:42:48,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:42:48,148 INFO L87 Difference]: Start difference. First operand 1659 states and 2643 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-24 01:42:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:49,360 INFO L93 Difference]: Finished difference Result 3307 states and 5402 transitions. [2024-11-24 01:42:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:49,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 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 136 [2024-11-24 01:42:49,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:49,382 INFO L225 Difference]: With dead ends: 3307 [2024-11-24 01:42:49,383 INFO L226 Difference]: Without dead ends: 1691 [2024-11-24 01:42:49,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:42:49,398 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 811 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:49,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2134 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:42:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-11-24 01:42:49,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1691. [2024-11-24 01:42:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1310 states have (on average 1.5900763358778627) internal successors, (2083), 1339 states have internal predecessors, (2083), 285 states have call successors, (285), 99 states have call predecessors, (285), 95 states have return successors, (327), 268 states have call predecessors, (327), 281 states have call successors, (327) [2024-11-24 01:42:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2695 transitions. [2024-11-24 01:42:49,527 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2695 transitions. Word has length 136 [2024-11-24 01:42:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:49,528 INFO L471 AbstractCegarLoop]: Abstraction has 1691 states and 2695 transitions. [2024-11-24 01:42:49,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-24 01:42:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2695 transitions. [2024-11-24 01:42:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 01:42:49,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:49,536 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:49,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:42:49,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:49,737 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:49,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash 244886367, now seen corresponding path program 1 times [2024-11-24 01:42:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:49,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506395563] [2024-11-24 01:42:49,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:49,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 01:42:49,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506395563] [2024-11-24 01:42:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506395563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186410981] [2024-11-24 01:42:49,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:49,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:49,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:49,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:49,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:42:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:50,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:42:50,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:42:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:42:50,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:42:50,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186410981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:50,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:42:50,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 01:42:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346807591] [2024-11-24 01:42:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:50,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:42:50,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:50,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:42:50,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:42:50,609 INFO L87 Difference]: Start difference. First operand 1691 states and 2695 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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) [2024-11-24 01:42:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:51,631 INFO L93 Difference]: Finished difference Result 3371 states and 5494 transitions. [2024-11-24 01:42:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:51,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 139 [2024-11-24 01:42:51,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:51,650 INFO L225 Difference]: With dead ends: 3371 [2024-11-24 01:42:51,651 INFO L226 Difference]: Without dead ends: 1723 [2024-11-24 01:42:51,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:42:51,667 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 789 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:51,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2131 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:42:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2024-11-24 01:42:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1723. [2024-11-24 01:42:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1338 states have (on average 1.592675635276532) internal successors, (2131), 1367 states have internal predecessors, (2131), 285 states have call successors, (285), 103 states have call predecessors, (285), 99 states have return successors, (331), 268 states have call predecessors, (331), 281 states have call successors, (331) [2024-11-24 01:42:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2747 transitions. [2024-11-24 01:42:51,807 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2747 transitions. Word has length 139 [2024-11-24 01:42:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:51,807 INFO L471 AbstractCegarLoop]: Abstraction has 1723 states and 2747 transitions. [2024-11-24 01:42:51,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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) [2024-11-24 01:42:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2747 transitions. [2024-11-24 01:42:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 01:42:51,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:51,815 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:51,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:42:52,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:52,016 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:52,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 636656326, now seen corresponding path program 1 times [2024-11-24 01:42:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824592507] [2024-11-24 01:42:52,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:42:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824592507] [2024-11-24 01:42:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824592507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401117147] [2024-11-24 01:42:52,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:52,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:52,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:52,501 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:52,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:42:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:52,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:42:53,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:42:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:42:53,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:42:53,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401117147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:53,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:42:53,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-24 01:42:53,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455105649] [2024-11-24 01:42:53,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:53,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:53,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:53,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:53,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:42:53,283 INFO L87 Difference]: Start difference. First operand 1723 states and 2747 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-24 01:42:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:56,239 INFO L93 Difference]: Finished difference Result 3494 states and 5577 transitions. [2024-11-24 01:42:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:56,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 142 [2024-11-24 01:42:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:56,261 INFO L225 Difference]: With dead ends: 3494 [2024-11-24 01:42:56,261 INFO L226 Difference]: Without dead ends: 1817 [2024-11-24 01:42:56,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:42:56,272 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 2094 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:56,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 868 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:42:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2024-11-24 01:42:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1683. [2024-11-24 01:42:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1254 states have (on average 1.5542264752791068) internal successors, (1949), 1303 states have internal predecessors, (1949), 331 states have call successors, (331), 93 states have call predecessors, (331), 97 states have return successors, (377), 312 states have call predecessors, (377), 327 states have call successors, (377) [2024-11-24 01:42:56,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2657 transitions. [2024-11-24 01:42:56,498 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2657 transitions. Word has length 142 [2024-11-24 01:42:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:56,498 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 2657 transitions. [2024-11-24 01:42:56,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-24 01:42:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2657 transitions. [2024-11-24 01:42:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 01:42:56,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:56,506 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:56,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:42:56,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 01:42:56,711 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:56,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash -317283832, now seen corresponding path program 1 times [2024-11-24 01:42:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:56,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686256546] [2024-11-24 01:42:56,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:42:57,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:57,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686256546] [2024-11-24 01:42:57,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686256546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:57,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298470768] [2024-11-24 01:42:57,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:57,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:57,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:57,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:42:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:57,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 01:42:57,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:42:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 01:42:58,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:42:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298470768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:58,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:42:58,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:42:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069913433] [2024-11-24 01:42:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:58,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:42:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:58,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:42:58,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:42:58,017 INFO L87 Difference]: Start difference. First operand 1683 states and 2657 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-24 01:43:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:04,833 INFO L93 Difference]: Finished difference Result 7186 states and 11668 transitions. [2024-11-24 01:43:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:43:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 142 [2024-11-24 01:43:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:04,884 INFO L225 Difference]: With dead ends: 7186 [2024-11-24 01:43:04,884 INFO L226 Difference]: Without dead ends: 5548 [2024-11-24 01:43:04,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:43:04,897 INFO L435 NwaCegarLoop]: 554 mSDtfsCounter, 2768 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 5985 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 6716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 5985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:04,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2875 Valid, 2083 Invalid, 6716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [731 Valid, 5985 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-24 01:43:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2024-11-24 01:43:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5144. [2024-11-24 01:43:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 3817 states have (on average 1.5501702908042965) internal successors, (5917), 3971 states have internal predecessors, (5917), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 310 states have return successors, (1360), 988 states have call predecessors, (1360), 1008 states have call successors, (1360) [2024-11-24 01:43:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 8293 transitions. [2024-11-24 01:43:05,363 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 8293 transitions. Word has length 142 [2024-11-24 01:43:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:05,364 INFO L471 AbstractCegarLoop]: Abstraction has 5144 states and 8293 transitions. [2024-11-24 01:43:05,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-24 01:43:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 8293 transitions. [2024-11-24 01:43:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 01:43:05,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:05,373 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:43:05,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:43:05,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:05,575 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:05,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -800553519, now seen corresponding path program 1 times [2024-11-24 01:43:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459359696] [2024-11-24 01:43:05,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:43:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459359696] [2024-11-24 01:43:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459359696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075232832] [2024-11-24 01:43:06,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:06,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:06,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:06,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:43:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:06,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:43:06,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 01:43:06,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075232832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:06,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:06,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-24 01:43:06,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347891946] [2024-11-24 01:43:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:06,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:43:06,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:06,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:43:06,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:43:06,553 INFO L87 Difference]: Start difference. First operand 5144 states and 8293 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:43:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:07,107 INFO L93 Difference]: Finished difference Result 12035 states and 19613 transitions. [2024-11-24 01:43:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:43:07,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-24 01:43:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:07,179 INFO L225 Difference]: With dead ends: 12035 [2024-11-24 01:43:07,179 INFO L226 Difference]: Without dead ends: 6940 [2024-11-24 01:43:07,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:43:07,205 INFO L435 NwaCegarLoop]: 1663 mSDtfsCounter, 830 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2523 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 [2024-11-24 01:43:07,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 2523 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:43:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2024-11-24 01:43:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 5138. [2024-11-24 01:43:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 3813 states have (on average 1.5496984002098086) internal successors, (5909), 3965 states have internal predecessors, (5909), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 308 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-11-24 01:43:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 8261 transitions. [2024-11-24 01:43:07,668 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 8261 transitions. Word has length 147 [2024-11-24 01:43:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:07,669 INFO L471 AbstractCegarLoop]: Abstraction has 5138 states and 8261 transitions. [2024-11-24 01:43:07,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:43:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 8261 transitions. [2024-11-24 01:43:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 01:43:07,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:07,676 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 01:43:07,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:07,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:07,877 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:07,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -141021997, now seen corresponding path program 1 times [2024-11-24 01:43:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459294826] [2024-11-24 01:43:07,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:43:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:08,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459294826] [2024-11-24 01:43:08,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459294826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:08,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540002321] [2024-11-24 01:43:08,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:08,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:08,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:08,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:43:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:08,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:43:08,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 01:43:09,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540002321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:09,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:09,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-24 01:43:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112374073] [2024-11-24 01:43:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:09,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:43:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:09,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:43:09,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:43:09,162 INFO L87 Difference]: Start difference. First operand 5138 states and 8261 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:43:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:09,815 INFO L93 Difference]: Finished difference Result 5140 states and 8262 transitions. [2024-11-24 01:43:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:43:09,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-24 01:43:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:09,867 INFO L225 Difference]: With dead ends: 5140 [2024-11-24 01:43:09,868 INFO L226 Difference]: Without dead ends: 5138 [2024-11-24 01:43:09,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:43:09,875 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 391 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:09,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 3852 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:43:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2024-11-24 01:43:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 5138. [2024-11-24 01:43:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 3813 states have (on average 1.5431418830317336) internal successors, (5884), 3965 states have internal predecessors, (5884), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 308 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-11-24 01:43:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 8236 transitions. [2024-11-24 01:43:10,360 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 8236 transitions. Word has length 147 [2024-11-24 01:43:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:10,361 INFO L471 AbstractCegarLoop]: Abstraction has 5138 states and 8236 transitions. [2024-11-24 01:43:10,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:43:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 8236 transitions. [2024-11-24 01:43:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-24 01:43:10,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:10,369 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:10,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:10,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:10,570 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:10,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash 495302479, now seen corresponding path program 1 times [2024-11-24 01:43:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:10,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346196073] [2024-11-24 01:43:10,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:10,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-24 01:43:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346196073] [2024-11-24 01:43:11,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346196073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296405521] [2024-11-24 01:43:11,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:11,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:11,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:11,037 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:11,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:43:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:11,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:43:11,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:43:11,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:11,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296405521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:11,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:11,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734293917] [2024-11-24 01:43:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:11,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:11,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:11,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:11,552 INFO L87 Difference]: Start difference. First operand 5138 states and 8236 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:12,186 INFO L93 Difference]: Finished difference Result 10501 states and 17082 transitions. [2024-11-24 01:43:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:12,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2024-11-24 01:43:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:12,239 INFO L225 Difference]: With dead ends: 10501 [2024-11-24 01:43:12,239 INFO L226 Difference]: Without dead ends: 5408 [2024-11-24 01:43:12,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:12,270 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 144 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2395 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 [2024-11-24 01:43:12,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2395 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:43:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2024-11-24 01:43:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 5372. [2024-11-24 01:43:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 4041 states have (on average 1.5644642415243752) internal successors, (6322), 4193 states have internal predecessors, (6322), 1016 states have call successors, (1016), 267 states have call predecessors, (1016), 314 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-11-24 01:43:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8674 transitions. [2024-11-24 01:43:12,773 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 8674 transitions. Word has length 170 [2024-11-24 01:43:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:12,774 INFO L471 AbstractCegarLoop]: Abstraction has 5372 states and 8674 transitions. [2024-11-24 01:43:12,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 8674 transitions. [2024-11-24 01:43:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-24 01:43:12,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:12,784 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:12,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:12,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:12,985 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:12,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash -509373034, now seen corresponding path program 1 times [2024-11-24 01:43:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826297032] [2024-11-24 01:43:12,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:12,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-24 01:43:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826297032] [2024-11-24 01:43:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826297032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419394515] [2024-11-24 01:43:13,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:13,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:13,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:13,459 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:13,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:43:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:13,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:43:13,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:43:13,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419394515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:13,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:13,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:13,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607513104] [2024-11-24 01:43:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:13,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:13,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:13,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:13,987 INFO L87 Difference]: Start difference. First operand 5372 states and 8674 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:14,709 INFO L93 Difference]: Finished difference Result 10987 states and 17958 transitions. [2024-11-24 01:43:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2024-11-24 01:43:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:14,764 INFO L225 Difference]: With dead ends: 10987 [2024-11-24 01:43:14,766 INFO L226 Difference]: Without dead ends: 5660 [2024-11-24 01:43:14,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:14,802 INFO L435 NwaCegarLoop]: 805 mSDtfsCounter, 142 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:14,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2392 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:43:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5660 states. [2024-11-24 01:43:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5660 to 5606. [2024-11-24 01:43:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 4269 states have (on average 1.5835090185055047) internal successors, (6760), 4421 states have internal predecessors, (6760), 1016 states have call successors, (1016), 273 states have call predecessors, (1016), 320 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-11-24 01:43:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 9112 transitions. [2024-11-24 01:43:15,455 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 9112 transitions. Word has length 175 [2024-11-24 01:43:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:15,456 INFO L471 AbstractCegarLoop]: Abstraction has 5606 states and 9112 transitions. [2024-11-24 01:43:15,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:15,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 9112 transitions. [2024-11-24 01:43:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-24 01:43:15,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:15,471 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:15,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:43:15,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 01:43:15,671 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:15,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -49423226, now seen corresponding path program 1 times [2024-11-24 01:43:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687907645] [2024-11-24 01:43:15,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-24 01:43:16,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:16,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687907645] [2024-11-24 01:43:16,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687907645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:16,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758489913] [2024-11-24 01:43:16,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:16,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:16,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:16,189 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:16,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:43:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:16,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:43:16,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:43:16,723 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:16,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758489913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:16,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:16,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:16,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236724991] [2024-11-24 01:43:16,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:16,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:16,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:16,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:16,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:16,726 INFO L87 Difference]: Start difference. First operand 5606 states and 9112 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:17,274 INFO L93 Difference]: Finished difference Result 11473 states and 18834 transitions. [2024-11-24 01:43:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:17,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2024-11-24 01:43:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:17,326 INFO L225 Difference]: With dead ends: 11473 [2024-11-24 01:43:17,326 INFO L226 Difference]: Without dead ends: 5912 [2024-11-24 01:43:17,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:17,356 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 140 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2389 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 [2024-11-24 01:43:17,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2389 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:43:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5912 states. [2024-11-24 01:43:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5912 to 5840. [2024-11-24 01:43:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 4497 states have (on average 1.6006226373137646) internal successors, (7198), 4649 states have internal predecessors, (7198), 1016 states have call successors, (1016), 279 states have call predecessors, (1016), 326 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-11-24 01:43:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 9550 transitions. [2024-11-24 01:43:17,761 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 9550 transitions. Word has length 179 [2024-11-24 01:43:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:17,763 INFO L471 AbstractCegarLoop]: Abstraction has 5840 states and 9550 transitions. [2024-11-24 01:43:17,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 9550 transitions. [2024-11-24 01:43:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-24 01:43:17,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:17,773 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:17,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:43:17,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:43:17,974 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:17,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2045067153, now seen corresponding path program 1 times [2024-11-24 01:43:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770454706] [2024-11-24 01:43:17,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-24 01:43:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770454706] [2024-11-24 01:43:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770454706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151658793] [2024-11-24 01:43:18,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:18,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:18,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:18,405 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:18,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:43:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:18,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:43:18,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:43:18,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:18,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151658793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:18,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:18,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:18,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102282670] [2024-11-24 01:43:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:18,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:18,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:18,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:18,955 INFO L87 Difference]: Start difference. First operand 5840 states and 9550 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:19,502 INFO L93 Difference]: Finished difference Result 11959 states and 19710 transitions. [2024-11-24 01:43:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:19,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2024-11-24 01:43:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:19,557 INFO L225 Difference]: With dead ends: 11959 [2024-11-24 01:43:19,558 INFO L226 Difference]: Without dead ends: 6164 [2024-11-24 01:43:19,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:19,591 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 138 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:19,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2386 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:43:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6164 states. [2024-11-24 01:43:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6164 to 6074. [2024-11-24 01:43:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6074 states, 4725 states have (on average 1.616084656084656) internal successors, (7636), 4877 states have internal predecessors, (7636), 1016 states have call successors, (1016), 285 states have call predecessors, (1016), 332 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-11-24 01:43:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 9988 transitions. [2024-11-24 01:43:20,000 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 9988 transitions. Word has length 182 [2024-11-24 01:43:20,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:20,000 INFO L471 AbstractCegarLoop]: Abstraction has 6074 states and 9988 transitions. [2024-11-24 01:43:20,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 9988 transitions. [2024-11-24 01:43:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-24 01:43:20,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:20,011 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, 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] [2024-11-24 01:43:20,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:43:20,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:43:20,213 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:20,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash -197627553, now seen corresponding path program 1 times [2024-11-24 01:43:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070700182] [2024-11-24 01:43:20,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-24 01:43:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070700182] [2024-11-24 01:43:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070700182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141196241] [2024-11-24 01:43:20,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:20,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:20,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:20,747 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:20,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:43:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:21,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:43:21,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-24 01:43:21,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:21,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141196241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594621334] [2024-11-24 01:43:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:21,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:21,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:21,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:21,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:21,268 INFO L87 Difference]: Start difference. First operand 6074 states and 9988 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:21,758 INFO L93 Difference]: Finished difference Result 12445 states and 20586 transitions. [2024-11-24 01:43:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 184 [2024-11-24 01:43:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:21,803 INFO L225 Difference]: With dead ends: 12445 [2024-11-24 01:43:21,804 INFO L226 Difference]: Without dead ends: 6416 [2024-11-24 01:43:21,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:21,837 INFO L435 NwaCegarLoop]: 801 mSDtfsCounter, 136 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2379 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 [2024-11-24 01:43:21,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2379 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:43:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6416 states. [2024-11-24 01:43:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6416 to 6308. [2024-11-24 01:43:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6308 states, 4953 states have (on average 1.6301231576822128) internal successors, (8074), 5105 states have internal predecessors, (8074), 1016 states have call successors, (1016), 291 states have call predecessors, (1016), 338 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-11-24 01:43:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 10426 transitions. [2024-11-24 01:43:22,255 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 10426 transitions. Word has length 184 [2024-11-24 01:43:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:22,256 INFO L471 AbstractCegarLoop]: Abstraction has 6308 states and 10426 transitions. [2024-11-24 01:43:22,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:43:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 10426 transitions. [2024-11-24 01:43:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-24 01:43:22,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:22,265 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:22,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:22,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:43:22,465 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:22,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 7347982, now seen corresponding path program 1 times [2024-11-24 01:43:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:22,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540257181] [2024-11-24 01:43:22,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:22,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-24 01:43:23,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:23,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540257181] [2024-11-24 01:43:23,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540257181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:23,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772532625] [2024-11-24 01:43:23,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:23,075 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:23,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:43:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:23,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 01:43:23,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-24 01:43:23,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:23,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772532625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:23,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:23,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2024-11-24 01:43:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759507695] [2024-11-24 01:43:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:23,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:43:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:23,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:43:23,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:43:23,955 INFO L87 Difference]: Start difference. First operand 6308 states and 10426 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-24 01:43:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:28,659 INFO L93 Difference]: Finished difference Result 19680 states and 33094 transitions. [2024-11-24 01:43:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:43:28,659 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 184 [2024-11-24 01:43:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:28,754 INFO L225 Difference]: With dead ends: 19680 [2024-11-24 01:43:28,754 INFO L226 Difference]: Without dead ends: 10406 [2024-11-24 01:43:28,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:43:28,804 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 1963 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 4526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:28,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 2282 Invalid, 4526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 4026 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 01:43:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2024-11-24 01:43:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 10325. [2024-11-24 01:43:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10325 states, 8004 states have (on average 1.6255622188905547) internal successors, (13011), 8311 states have internal predecessors, (13011), 1724 states have call successors, (1724), 465 states have call predecessors, (1724), 596 states have return successors, (2347), 1696 states have call predecessors, (2347), 1716 states have call successors, (2347) [2024-11-24 01:43:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10325 states to 10325 states and 17082 transitions. [2024-11-24 01:43:29,566 INFO L78 Accepts]: Start accepts. Automaton has 10325 states and 17082 transitions. Word has length 184 [2024-11-24 01:43:29,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:29,566 INFO L471 AbstractCegarLoop]: Abstraction has 10325 states and 17082 transitions. [2024-11-24 01:43:29,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-24 01:43:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 10325 states and 17082 transitions. [2024-11-24 01:43:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-24 01:43:29,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:29,583 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, 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] [2024-11-24 01:43:29,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:29,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:29,788 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:29,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash -368534634, now seen corresponding path program 1 times [2024-11-24 01:43:29,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:29,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859499907] [2024-11-24 01:43:29,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:29,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-24 01:43:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859499907] [2024-11-24 01:43:30,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859499907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:30,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:43:30,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:43:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415672189] [2024-11-24 01:43:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:30,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:43:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:30,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:43:30,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:43:30,039 INFO L87 Difference]: Start difference. First operand 10325 states and 17082 transitions. Second operand has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 01:43:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:30,932 INFO L93 Difference]: Finished difference Result 20347 states and 33675 transitions. [2024-11-24 01:43:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:43:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 187 [2024-11-24 01:43:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:31,022 INFO L225 Difference]: With dead ends: 20347 [2024-11-24 01:43:31,022 INFO L226 Difference]: Without dead ends: 9707 [2024-11-24 01:43:31,079 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 [2024-11-24 01:43:31,079 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 33 mSDsluCounter, 5032 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 5876 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 [2024-11-24 01:43:31,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 5876 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:43:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2024-11-24 01:43:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9683. [2024-11-24 01:43:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9683 states, 7597 states have (on average 1.6395945768066342) internal successors, (12456), 7879 states have internal predecessors, (12456), 1539 states have call successors, (1539), 441 states have call predecessors, (1539), 546 states have return successors, (1995), 1490 states have call predecessors, (1995), 1531 states have call successors, (1995) [2024-11-24 01:43:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9683 states to 9683 states and 15990 transitions. [2024-11-24 01:43:31,910 INFO L78 Accepts]: Start accepts. Automaton has 9683 states and 15990 transitions. Word has length 187 [2024-11-24 01:43:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:31,911 INFO L471 AbstractCegarLoop]: Abstraction has 9683 states and 15990 transitions. [2024-11-24 01:43:31,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-24 01:43:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 9683 states and 15990 transitions. [2024-11-24 01:43:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-24 01:43:31,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:31,936 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:31,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 01:43:31,937 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:31,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash 906651687, now seen corresponding path program 1 times [2024-11-24 01:43:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:31,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768462682] [2024-11-24 01:43:31,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:43:32,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:32,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768462682] [2024-11-24 01:43:32,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768462682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:32,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501872237] [2024-11-24 01:43:32,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:32,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:32,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:32,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:32,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:43:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:33,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 3992 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:43:33,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2024-11-24 01:43:34,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:34,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501872237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:34,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:34,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:34,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172320914] [2024-11-24 01:43:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:34,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:34,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:34,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:34,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:34,146 INFO L87 Difference]: Start difference. First operand 9683 states and 15990 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 01:43:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:34,900 INFO L93 Difference]: Finished difference Result 19414 states and 32362 transitions. [2024-11-24 01:43:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 526 [2024-11-24 01:43:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:34,972 INFO L225 Difference]: With dead ends: 19414 [2024-11-24 01:43:34,973 INFO L226 Difference]: Without dead ends: 9773 [2024-11-24 01:43:35,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:35,054 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 22 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:35,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2520 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:43:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9773 states. [2024-11-24 01:43:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9773 to 9773. [2024-11-24 01:43:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9773 states, 7677 states have (on average 1.640745082714602) internal successors, (12596), 7959 states have internal predecessors, (12596), 1539 states have call successors, (1539), 451 states have call predecessors, (1539), 556 states have return successors, (1995), 1490 states have call predecessors, (1995), 1531 states have call successors, (1995) [2024-11-24 01:43:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 16130 transitions. [2024-11-24 01:43:35,833 INFO L78 Accepts]: Start accepts. Automaton has 9773 states and 16130 transitions. Word has length 526 [2024-11-24 01:43:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:35,835 INFO L471 AbstractCegarLoop]: Abstraction has 9773 states and 16130 transitions. [2024-11-24 01:43:35,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 01:43:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9773 states and 16130 transitions. [2024-11-24 01:43:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-24 01:43:35,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:35,862 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:35,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 01:43:36,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 01:43:36,064 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:36,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash 236800507, now seen corresponding path program 1 times [2024-11-24 01:43:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021858227] [2024-11-24 01:43:36,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:36,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:43:37,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021858227] [2024-11-24 01:43:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021858227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643763950] [2024-11-24 01:43:37,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:37,549 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:43:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:38,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:43:38,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-11-24 01:43:38,677 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:38,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643763950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:38,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:38,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:38,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065419610] [2024-11-24 01:43:38,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:38,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:38,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:38,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:38,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:38,681 INFO L87 Difference]: Start difference. First operand 9773 states and 16130 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 01:43:39,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:39,447 INFO L93 Difference]: Finished difference Result 19594 states and 32602 transitions. [2024-11-24 01:43:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:39,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 527 [2024-11-24 01:43:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:39,532 INFO L225 Difference]: With dead ends: 19594 [2024-11-24 01:43:39,532 INFO L226 Difference]: Without dead ends: 9863 [2024-11-24 01:43:39,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:39,579 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 20 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:39,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2514 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:43:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9863 states. [2024-11-24 01:43:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9863 to 9863. [2024-11-24 01:43:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9863 states, 7757 states have (on average 1.6418718576769369) internal successors, (12736), 8039 states have internal predecessors, (12736), 1539 states have call successors, (1539), 461 states have call predecessors, (1539), 566 states have return successors, (1995), 1490 states have call predecessors, (1995), 1531 states have call successors, (1995) [2024-11-24 01:43:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9863 states to 9863 states and 16270 transitions. [2024-11-24 01:43:40,419 INFO L78 Accepts]: Start accepts. Automaton has 9863 states and 16270 transitions. Word has length 527 [2024-11-24 01:43:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:40,420 INFO L471 AbstractCegarLoop]: Abstraction has 9863 states and 16270 transitions. [2024-11-24 01:43:40,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 01:43:40,420 INFO L276 IsEmpty]: Start isEmpty. Operand 9863 states and 16270 transitions. [2024-11-24 01:43:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-24 01:43:40,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:40,434 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:40,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:43:40,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:40,635 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:40,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -727582823, now seen corresponding path program 1 times [2024-11-24 01:43:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373739979] [2024-11-24 01:43:40,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:43:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373739979] [2024-11-24 01:43:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373739979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685193311] [2024-11-24 01:43:41,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:41,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:41,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:41,442 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:41,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 01:43:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:42,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:43:42,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-24 01:43:42,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:42,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685193311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:42,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:42,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:43:42,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37728885] [2024-11-24 01:43:42,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:42,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:42,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:42,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:42,543 INFO L87 Difference]: Start difference. First operand 9863 states and 16270 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-24 01:43:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:43,297 INFO L93 Difference]: Finished difference Result 15081 states and 24976 transitions. [2024-11-24 01:43:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 527 [2024-11-24 01:43:43,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:43,386 INFO L225 Difference]: With dead ends: 15081 [2024-11-24 01:43:43,387 INFO L226 Difference]: Without dead ends: 9923 [2024-11-24 01:43:43,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:43,429 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 22 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:43,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2533 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:43:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9923 states. [2024-11-24 01:43:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9923 to 9923. [2024-11-24 01:43:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9923 states, 7807 states have (on average 1.641603688997054) internal successors, (12816), 8089 states have internal predecessors, (12816), 1544 states have call successors, (1544), 466 states have call predecessors, (1544), 571 states have return successors, (2000), 1495 states have call predecessors, (2000), 1536 states have call successors, (2000) [2024-11-24 01:43:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9923 states to 9923 states and 16360 transitions. [2024-11-24 01:43:44,578 INFO L78 Accepts]: Start accepts. Automaton has 9923 states and 16360 transitions. Word has length 527 [2024-11-24 01:43:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:44,579 INFO L471 AbstractCegarLoop]: Abstraction has 9923 states and 16360 transitions. [2024-11-24 01:43:44,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-24 01:43:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9923 states and 16360 transitions. [2024-11-24 01:43:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-24 01:43:44,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:44,595 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:44,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 01:43:44,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:44,796 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:44,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1964079043, now seen corresponding path program 1 times [2024-11-24 01:43:44,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:44,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749874015] [2024-11-24 01:43:44,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:44,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:43:45,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749874015] [2024-11-24 01:43:45,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749874015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:45,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177248991] [2024-11-24 01:43:45,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:45,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:45,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:45,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:45,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:43:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:46,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 3992 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:43:46,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2024-11-24 01:43:46,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177248991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:46,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:46,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:43:46,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183580273] [2024-11-24 01:43:46,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:46,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:43:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:46,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:43:46,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:43:46,874 INFO L87 Difference]: Start difference. First operand 9923 states and 16360 transitions. Second operand has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:47,335 INFO L93 Difference]: Finished difference Result 16136 states and 26614 transitions. [2024-11-24 01:43:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:43:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 526 [2024-11-24 01:43:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:47,392 INFO L225 Difference]: With dead ends: 16136 [2024-11-24 01:43:47,392 INFO L226 Difference]: Without dead ends: 9915 [2024-11-24 01:43:47,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:43:47,416 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 23 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:47,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5121 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:43:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9915 states. [2024-11-24 01:43:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9915 to 9915. [2024-11-24 01:43:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 7799 states have (on average 1.641236055904603) internal successors, (12800), 8081 states have internal predecessors, (12800), 1544 states have call successors, (1544), 466 states have call predecessors, (1544), 571 states have return successors, (2000), 1495 states have call predecessors, (2000), 1536 states have call successors, (2000) [2024-11-24 01:43:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 16344 transitions. [2024-11-24 01:43:48,014 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 16344 transitions. Word has length 526 [2024-11-24 01:43:48,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:48,015 INFO L471 AbstractCegarLoop]: Abstraction has 9915 states and 16344 transitions. [2024-11-24 01:43:48,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 16344 transitions. [2024-11-24 01:43:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-24 01:43:48,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:48,027 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:48,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 01:43:48,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:48,228 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:48,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 967752133, now seen corresponding path program 1 times [2024-11-24 01:43:48,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:48,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363377572] [2024-11-24 01:43:48,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:48,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:43:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363377572] [2024-11-24 01:43:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363377572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651470451] [2024-11-24 01:43:49,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:49,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:49,306 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:49,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:43:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:50,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:43:50,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2024-11-24 01:43:50,433 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:50,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651470451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:50,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:50,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:43:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121471888] [2024-11-24 01:43:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:50,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:43:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:50,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:43:50,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:43:50,435 INFO L87 Difference]: Start difference. First operand 9915 states and 16344 transitions. Second operand has 7 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:51,129 INFO L93 Difference]: Finished difference Result 16128 states and 26598 transitions. [2024-11-24 01:43:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:43:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 527 [2024-11-24 01:43:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:51,220 INFO L225 Difference]: With dead ends: 16128 [2024-11-24 01:43:51,220 INFO L226 Difference]: Without dead ends: 9907 [2024-11-24 01:43:51,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:43:51,266 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 28 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5067 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:51,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 5067 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:43:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9907 states. [2024-11-24 01:43:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9907 to 9907. [2024-11-24 01:43:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9907 states, 7791 states have (on average 1.640739314593762) internal successors, (12783), 8073 states have internal predecessors, (12783), 1544 states have call successors, (1544), 466 states have call predecessors, (1544), 571 states have return successors, (2000), 1495 states have call predecessors, (2000), 1536 states have call successors, (2000) [2024-11-24 01:43:52,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9907 states to 9907 states and 16327 transitions. [2024-11-24 01:43:52,280 INFO L78 Accepts]: Start accepts. Automaton has 9907 states and 16327 transitions. Word has length 527 [2024-11-24 01:43:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:52,280 INFO L471 AbstractCegarLoop]: Abstraction has 9907 states and 16327 transitions. [2024-11-24 01:43:52,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9907 states and 16327 transitions. [2024-11-24 01:43:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-24 01:43:52,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:52,296 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 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] [2024-11-24 01:43:52,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:52,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 01:43:52,497 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:52,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash 248678297, now seen corresponding path program 1 times [2024-11-24 01:43:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7241595] [2024-11-24 01:43:52,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:43:53,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:53,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7241595] [2024-11-24 01:43:53,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7241595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:53,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119309274] [2024-11-24 01:43:53,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:53,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:53,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:53,284 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:53,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 01:43:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:54,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 3994 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:43:54,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2024-11-24 01:43:54,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:54,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119309274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:54,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:54,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:43:54,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836387751] [2024-11-24 01:43:54,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:54,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:43:54,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:54,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:43:54,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:43:54,402 INFO L87 Difference]: Start difference. First operand 9907 states and 16327 transitions. Second operand has 7 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:54,953 INFO L93 Difference]: Finished difference Result 16120 states and 26581 transitions. [2024-11-24 01:43:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:43:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 528 [2024-11-24 01:43:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:55,012 INFO L225 Difference]: With dead ends: 16120 [2024-11-24 01:43:55,012 INFO L226 Difference]: Without dead ends: 9899 [2024-11-24 01:43:55,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:43:55,037 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 26 mSDsluCounter, 4213 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 5062 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:55,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 5062 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:43:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2024-11-24 01:43:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 9899. [2024-11-24 01:43:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9899 states, 7783 states have (on average 1.6403700372606964) internal successors, (12767), 8065 states have internal predecessors, (12767), 1544 states have call successors, (1544), 466 states have call predecessors, (1544), 571 states have return successors, (2000), 1495 states have call predecessors, (2000), 1536 states have call successors, (2000) [2024-11-24 01:43:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9899 states to 9899 states and 16311 transitions. [2024-11-24 01:43:55,474 INFO L78 Accepts]: Start accepts. Automaton has 9899 states and 16311 transitions. Word has length 528 [2024-11-24 01:43:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:55,474 INFO L471 AbstractCegarLoop]: Abstraction has 9899 states and 16311 transitions. [2024-11-24 01:43:55,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand 9899 states and 16311 transitions. [2024-11-24 01:43:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-24 01:43:55,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:55,487 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 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] [2024-11-24 01:43:55,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 01:43:55,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 01:43:55,687 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:55,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1979301215, now seen corresponding path program 1 times [2024-11-24 01:43:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168263379] [2024-11-24 01:43:55,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:43:56,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168263379] [2024-11-24 01:43:56,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168263379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973694513] [2024-11-24 01:43:56,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:56,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:56,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:56,493 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:56,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:43:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:57,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 3995 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:43:57,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2024-11-24 01:43:57,553 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973694513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:57,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:57,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 01:43:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060581406] [2024-11-24 01:43:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:57,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:43:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:57,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:43:57,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:43:57,558 INFO L87 Difference]: Start difference. First operand 9899 states and 16311 transitions. Second operand has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:58,199 INFO L93 Difference]: Finished difference Result 16112 states and 26565 transitions. [2024-11-24 01:43:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:43:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 529 [2024-11-24 01:43:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:58,284 INFO L225 Difference]: With dead ends: 16112 [2024-11-24 01:43:58,285 INFO L226 Difference]: Without dead ends: 9891 [2024-11-24 01:43:58,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:43:58,311 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 23 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:58,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5057 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:43:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9891 states. [2024-11-24 01:43:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9891 to 9891. [2024-11-24 01:43:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9891 states, 7775 states have (on average 1.64) internal successors, (12751), 8057 states have internal predecessors, (12751), 1544 states have call successors, (1544), 466 states have call predecessors, (1544), 571 states have return successors, (2000), 1495 states have call predecessors, (2000), 1536 states have call successors, (2000) [2024-11-24 01:43:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9891 states to 9891 states and 16295 transitions. [2024-11-24 01:43:59,141 INFO L78 Accepts]: Start accepts. Automaton has 9891 states and 16295 transitions. Word has length 529 [2024-11-24 01:43:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:59,143 INFO L471 AbstractCegarLoop]: Abstraction has 9891 states and 16295 transitions. [2024-11-24 01:43:59,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 01:43:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 9891 states and 16295 transitions. [2024-11-24 01:43:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-24 01:43:59,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:59,170 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 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] [2024-11-24 01:43:59,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:59,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 01:43:59,371 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:59,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1728322304, now seen corresponding path program 1 times [2024-11-24 01:43:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:59,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119072660] [2024-11-24 01:43:59,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:59,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-24 01:44:00,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:00,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119072660] [2024-11-24 01:44:00,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119072660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:00,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782656960] [2024-11-24 01:44:00,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:00,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:00,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:00,343 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:00,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 01:44:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:01,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 3991 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 01:44:01,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 207 proven. 15 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2024-11-24 01:44:02,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:44:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2024-11-24 01:44:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782656960] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:05,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:44:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 8] total 23 [2024-11-24 01:44:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14313104] [2024-11-24 01:44:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:05,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:44:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:05,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:44:05,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:44:05,399 INFO L87 Difference]: Start difference. First operand 9891 states and 16295 transitions. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 7 states have internal predecessors, (175), 6 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2024-11-24 01:44:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:08,838 INFO L93 Difference]: Finished difference Result 16615 states and 27484 transitions. [2024-11-24 01:44:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:44:08,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 7 states have internal predecessors, (175), 6 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) Word has length 529 [2024-11-24 01:44:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:08,898 INFO L225 Difference]: With dead ends: 16615 [2024-11-24 01:44:08,899 INFO L226 Difference]: Without dead ends: 12434 [2024-11-24 01:44:08,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1049 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:44:08,916 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 1668 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:08,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 2214 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:44:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12434 states. [2024-11-24 01:44:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12434 to 12351. [2024-11-24 01:44:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12351 states, 9774 states have (on average 1.6432371598117455) internal successors, (16061), 10095 states have internal predecessors, (16061), 1887 states have call successors, (1887), 572 states have call predecessors, (1887), 689 states have return successors, (2446), 1793 states have call predecessors, (2446), 1877 states have call successors, (2446) [2024-11-24 01:44:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12351 states to 12351 states and 20394 transitions. [2024-11-24 01:44:09,483 INFO L78 Accepts]: Start accepts. Automaton has 12351 states and 20394 transitions. Word has length 529 [2024-11-24 01:44:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:09,484 INFO L471 AbstractCegarLoop]: Abstraction has 12351 states and 20394 transitions. [2024-11-24 01:44:09,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 7 states have internal predecessors, (175), 6 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2024-11-24 01:44:09,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12351 states and 20394 transitions. [2024-11-24 01:44:09,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-11-24 01:44:09,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:09,496 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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, 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] [2024-11-24 01:44:09,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 01:44:09,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 01:44:09,696 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:09,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:09,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2053873259, now seen corresponding path program 1 times [2024-11-24 01:44:09,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:09,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962450767] [2024-11-24 01:44:09,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-11-24 01:44:10,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962450767] [2024-11-24 01:44:10,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962450767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813761242] [2024-11-24 01:44:10,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:10,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:10,405 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:10,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:44:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:11,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 4206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:44:11,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2024-11-24 01:44:11,514 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:44:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813761242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:11,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:44:11,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:44:11,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214627051] [2024-11-24 01:44:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:11,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:44:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:11,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:44:11,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:44:11,518 INFO L87 Difference]: Start difference. First operand 12351 states and 20394 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-11-24 01:44:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:12,424 INFO L93 Difference]: Finished difference Result 20633 states and 34466 transitions. [2024-11-24 01:44:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:44:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 545 [2024-11-24 01:44:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:12,490 INFO L225 Difference]: With dead ends: 20633 [2024-11-24 01:44:12,490 INFO L226 Difference]: Without dead ends: 12816 [2024-11-24 01:44:12,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:44:12,519 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 140 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:12,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2360 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:44:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12816 states. [2024-11-24 01:44:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12816 to 12741. [2024-11-24 01:44:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12741 states, 10144 states have (on average 1.651813880126183) internal successors, (16756), 10465 states have internal predecessors, (16756), 1897 states have call successors, (1897), 582 states have call predecessors, (1897), 699 states have return successors, (2456), 1803 states have call predecessors, (2456), 1887 states have call successors, (2456) [2024-11-24 01:44:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12741 states to 12741 states and 21109 transitions. [2024-11-24 01:44:13,084 INFO L78 Accepts]: Start accepts. Automaton has 12741 states and 21109 transitions. Word has length 545 [2024-11-24 01:44:13,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:13,085 INFO L471 AbstractCegarLoop]: Abstraction has 12741 states and 21109 transitions. [2024-11-24 01:44:13,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-11-24 01:44:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 12741 states and 21109 transitions. [2024-11-24 01:44:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-24 01:44:13,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:13,097 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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, 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] [2024-11-24 01:44:13,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 01:44:13,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 01:44:13,298 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:13,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1387615210, now seen corresponding path program 1 times [2024-11-24 01:44:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836277401] [2024-11-24 01:44:13,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-11-24 01:44:13,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:13,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836277401] [2024-11-24 01:44:13,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836277401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:13,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145729490] [2024-11-24 01:44:13,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:13,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:13,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:14,000 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:14,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 01:44:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:14,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 4208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:44:15,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-11-24 01:44:15,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:44:15,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145729490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:15,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:44:15,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:44:15,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315655114] [2024-11-24 01:44:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:15,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:44:15,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:15,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:44:15,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:44:15,066 INFO L87 Difference]: Start difference. First operand 12741 states and 21109 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2024-11-24 01:44:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:15,989 INFO L93 Difference]: Finished difference Result 21398 states and 35786 transitions. [2024-11-24 01:44:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:44:15,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 547 [2024-11-24 01:44:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:16,071 INFO L225 Difference]: With dead ends: 21398 [2024-11-24 01:44:16,071 INFO L226 Difference]: Without dead ends: 13446 [2024-11-24 01:44:16,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:44:16,110 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 138 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:16,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2362 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:44:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13446 states. [2024-11-24 01:44:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13446 to 13326. [2024-11-24 01:44:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13326 states, 10699 states have (on average 1.6647350219646695) internal successors, (17811), 11020 states have internal predecessors, (17811), 1912 states have call successors, (1912), 597 states have call predecessors, (1912), 714 states have return successors, (2471), 1818 states have call predecessors, (2471), 1902 states have call successors, (2471) [2024-11-24 01:44:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13326 states to 13326 states and 22194 transitions. [2024-11-24 01:44:16,709 INFO L78 Accepts]: Start accepts. Automaton has 13326 states and 22194 transitions. Word has length 547 [2024-11-24 01:44:16,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:16,710 INFO L471 AbstractCegarLoop]: Abstraction has 13326 states and 22194 transitions. [2024-11-24 01:44:16,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2024-11-24 01:44:16,710 INFO L276 IsEmpty]: Start isEmpty. Operand 13326 states and 22194 transitions. [2024-11-24 01:44:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-24 01:44:16,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:16,723 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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, 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] [2024-11-24 01:44:16,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 01:44:16,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:16,924 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:16,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1371169996, now seen corresponding path program 1 times [2024-11-24 01:44:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:16,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859832342] [2024-11-24 01:44:16,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-11-24 01:44:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859832342] [2024-11-24 01:44:17,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859832342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908033249] [2024-11-24 01:44:17,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:17,604 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:17,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:44:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:18,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 4209 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:44:18,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-11-24 01:44:18,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:44:18,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908033249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:18,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:44:18,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:44:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506694158] [2024-11-24 01:44:18,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:18,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:44:18,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:18,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:44:18,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:44:18,665 INFO L87 Difference]: Start difference. First operand 13326 states and 22194 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2024-11-24 01:44:19,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:19,578 INFO L93 Difference]: Finished difference Result 22408 states and 37581 transitions. [2024-11-24 01:44:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:44:19,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 548 [2024-11-24 01:44:19,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:19,655 INFO L225 Difference]: With dead ends: 22408 [2024-11-24 01:44:19,655 INFO L226 Difference]: Without dead ends: 14076 [2024-11-24 01:44:19,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:44:19,689 INFO L435 NwaCegarLoop]: 797 mSDtfsCounter, 135 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:19,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2361 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:44:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2024-11-24 01:44:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 13911. [2024-11-24 01:44:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13911 states, 11254 states have (on average 1.6763817309401101) internal successors, (18866), 11575 states have internal predecessors, (18866), 1927 states have call successors, (1927), 612 states have call predecessors, (1927), 729 states have return successors, (2486), 1833 states have call predecessors, (2486), 1917 states have call successors, (2486) [2024-11-24 01:44:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13911 states to 13911 states and 23279 transitions. [2024-11-24 01:44:20,325 INFO L78 Accepts]: Start accepts. Automaton has 13911 states and 23279 transitions. Word has length 548 [2024-11-24 01:44:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:20,326 INFO L471 AbstractCegarLoop]: Abstraction has 13911 states and 23279 transitions. [2024-11-24 01:44:20,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2024-11-24 01:44:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13911 states and 23279 transitions. [2024-11-24 01:44:20,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-24 01:44:20,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:20,339 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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, 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] [2024-11-24 01:44:20,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 01:44:20,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:20,539 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:20,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1902117842, now seen corresponding path program 1 times [2024-11-24 01:44:20,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:20,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404621645] [2024-11-24 01:44:20,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-11-24 01:44:21,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404621645] [2024-11-24 01:44:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404621645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289381829] [2024-11-24 01:44:21,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:21,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:21,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:21,233 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:21,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 01:44:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:22,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 4210 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:44:22,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2024-11-24 01:44:22,318 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:44:22,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289381829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:22,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:44:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:44:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780880065] [2024-11-24 01:44:22,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:22,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:44:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:22,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:44:22,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:44:22,326 INFO L87 Difference]: Start difference. First operand 13911 states and 23279 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-24 01:44:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:23,336 INFO L93 Difference]: Finished difference Result 23418 states and 39376 transitions. [2024-11-24 01:44:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:44:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 549 [2024-11-24 01:44:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:23,611 INFO L225 Difference]: With dead ends: 23418 [2024-11-24 01:44:23,611 INFO L226 Difference]: Without dead ends: 14706 [2024-11-24 01:44:23,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:44:23,637 INFO L435 NwaCegarLoop]: 793 mSDtfsCounter, 134 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:23,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2353 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:44:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14706 states. [2024-11-24 01:44:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14706 to 14496. [2024-11-24 01:44:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14496 states, 11809 states have (on average 1.6869336946396816) internal successors, (19921), 12130 states have internal predecessors, (19921), 1942 states have call successors, (1942), 627 states have call predecessors, (1942), 744 states have return successors, (2501), 1848 states have call predecessors, (2501), 1932 states have call successors, (2501) [2024-11-24 01:44:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14496 states to 14496 states and 24364 transitions. [2024-11-24 01:44:24,244 INFO L78 Accepts]: Start accepts. Automaton has 14496 states and 24364 transitions. Word has length 549 [2024-11-24 01:44:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:24,245 INFO L471 AbstractCegarLoop]: Abstraction has 14496 states and 24364 transitions. [2024-11-24 01:44:24,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-24 01:44:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 14496 states and 24364 transitions. [2024-11-24 01:44:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-24 01:44:24,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:24,258 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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, 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] [2024-11-24 01:44:24,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-24 01:44:24,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:24,459 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:24,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1661744344, now seen corresponding path program 1 times [2024-11-24 01:44:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763751869] [2024-11-24 01:44:24,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-11-24 01:44:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:25,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763751869] [2024-11-24 01:44:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763751869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035581270] [2024-11-24 01:44:25,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:25,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:25,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:25,160 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:25,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 01:44:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:26,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 4206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:44:26,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2024-11-24 01:44:26,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:44:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035581270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:26,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:44:26,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:44:26,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241063806] [2024-11-24 01:44:26,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:26,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:44:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:26,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:44:26,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:44:26,361 INFO L87 Difference]: Start difference. First operand 14496 states and 24364 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:44:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:27,034 INFO L93 Difference]: Finished difference Result 29085 states and 49205 transitions. [2024-11-24 01:44:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:44:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 549 [2024-11-24 01:44:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:27,132 INFO L225 Difference]: With dead ends: 29085 [2024-11-24 01:44:27,132 INFO L226 Difference]: Without dead ends: 14631 [2024-11-24 01:44:27,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:44:27,185 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 18 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:27,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2487 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:44:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14631 states. [2024-11-24 01:44:27,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14631 to 14631. [2024-11-24 01:44:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14631 states, 11929 states have (on average 1.6871489647078548) internal successors, (20126), 12250 states have internal predecessors, (20126), 1942 states have call successors, (1942), 642 states have call predecessors, (1942), 759 states have return successors, (2501), 1848 states have call predecessors, (2501), 1932 states have call successors, (2501) [2024-11-24 01:44:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14631 states to 14631 states and 24569 transitions. [2024-11-24 01:44:27,808 INFO L78 Accepts]: Start accepts. Automaton has 14631 states and 24569 transitions. Word has length 549 [2024-11-24 01:44:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:27,808 INFO L471 AbstractCegarLoop]: Abstraction has 14631 states and 24569 transitions. [2024-11-24 01:44:27,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:44:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 14631 states and 24569 transitions. [2024-11-24 01:44:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-11-24 01:44:27,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:27,821 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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, 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] [2024-11-24 01:44:27,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-24 01:44:28,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-24 01:44:28,022 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:28,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1175141226, now seen corresponding path program 1 times [2024-11-24 01:44:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:28,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905073066] [2024-11-24 01:44:28,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:28,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-11-24 01:44:28,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905073066] [2024-11-24 01:44:28,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905073066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66064936] [2024-11-24 01:44:28,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:28,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:28,690 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:28,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 01:44:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:29,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 4207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:44:29,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2024-11-24 01:44:29,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:44:29,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66064936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:29,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:44:29,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 01:44:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838172583] [2024-11-24 01:44:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:29,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:44:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:29,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:44:29,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:44:29,869 INFO L87 Difference]: Start difference. First operand 14631 states and 24569 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-11-24 01:44:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:30,525 INFO L93 Difference]: Finished difference Result 23808 states and 40076 transitions. [2024-11-24 01:44:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:44:30,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 546 [2024-11-24 01:44:30,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:30,610 INFO L225 Difference]: With dead ends: 23808 [2024-11-24 01:44:30,610 INFO L226 Difference]: Without dead ends: 14691 [2024-11-24 01:44:30,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:44:30,647 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 22 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:30,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2512 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:44:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14691 states. [2024-11-24 01:44:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14691 to 14691. [2024-11-24 01:44:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14691 states, 11979 states have (on average 1.6863678103347526) internal successors, (20201), 12300 states have internal predecessors, (20201), 1947 states have call successors, (1947), 647 states have call predecessors, (1947), 764 states have return successors, (2506), 1853 states have call predecessors, (2506), 1937 states have call successors, (2506) [2024-11-24 01:44:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14691 states to 14691 states and 24654 transitions. [2024-11-24 01:44:31,282 INFO L78 Accepts]: Start accepts. Automaton has 14691 states and 24654 transitions. Word has length 546 [2024-11-24 01:44:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:31,282 INFO L471 AbstractCegarLoop]: Abstraction has 14691 states and 24654 transitions. [2024-11-24 01:44:31,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-11-24 01:44:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14691 states and 24654 transitions. [2024-11-24 01:44:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2024-11-24 01:44:31,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:31,296 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 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, 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] [2024-11-24 01:44:31,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 01:44:31,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-24 01:44:31,497 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:31,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1170815634, now seen corresponding path program 1 times [2024-11-24 01:44:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580748249] [2024-11-24 01:44:31,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 27 proven. 145 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-11-24 01:44:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580748249] [2024-11-24 01:44:32,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580748249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295320049] [2024-11-24 01:44:32,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:32,289 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:32,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-24 01:44:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:33,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 4205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 01:44:33,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 120 proven. 84 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2024-11-24 01:44:34,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:44:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 12 proven. 71 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2024-11-24 01:44:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295320049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:44:37,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:44:37,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-24 01:44:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739318755] [2024-11-24 01:44:37,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:44:37,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:44:37,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:37,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:44:37,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:44:37,013 INFO L87 Difference]: Start difference. First operand 14691 states and 24654 transitions. Second operand has 23 states, 23 states have (on average 21.0) internal successors, (483), 19 states have internal predecessors, (483), 14 states have call successors, (122), 9 states have call predecessors, (122), 15 states have return successors, (119), 18 states have call predecessors, (119), 14 states have call successors, (119) [2024-11-24 01:45:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:45:14,707 INFO L93 Difference]: Finished difference Result 91414 states and 158891 transitions. [2024-11-24 01:45:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-24 01:45:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 21.0) internal successors, (483), 19 states have internal predecessors, (483), 14 states have call successors, (122), 9 states have call predecessors, (122), 15 states have return successors, (119), 18 states have call predecessors, (119), 14 states have call successors, (119) Word has length 544 [2024-11-24 01:45:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:45:15,075 INFO L225 Difference]: With dead ends: 91414 [2024-11-24 01:45:15,075 INFO L226 Difference]: Without dead ends: 76726 [2024-11-24 01:45:15,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1125 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2983, Invalid=16199, Unknown=0, NotChecked=0, Total=19182 [2024-11-24 01:45:15,492 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 16977 mSDsluCounter, 8530 mSDsCounter, 0 mSdLazyCounter, 32734 mSolverCounterSat, 6117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16977 SdHoareTripleChecker+Valid, 9474 SdHoareTripleChecker+Invalid, 38851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 6117 IncrementalHoareTripleChecker+Valid, 32734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:45:15,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16977 Valid, 9474 Invalid, 38851 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [6117 Valid, 32734 Invalid, 0 Unknown, 0 Unchecked, 29.1s Time] [2024-11-24 01:45:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76726 states. [2024-11-24 01:45:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76726 to 71197. [2024-11-24 01:45:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71197 states, 57962 states have (on average 1.691263241434043) internal successors, (98029), 59837 states have internal predecessors, (98029), 9514 states have call successors, (9514), 2896 states have call predecessors, (9514), 3720 states have return successors, (14858), 9101 states have call predecessors, (14858), 9494 states have call successors, (14858) [2024-11-24 01:45:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71197 states to 71197 states and 122401 transitions. [2024-11-24 01:45:20,713 INFO L78 Accepts]: Start accepts. Automaton has 71197 states and 122401 transitions. Word has length 544 [2024-11-24 01:45:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:45:20,714 INFO L471 AbstractCegarLoop]: Abstraction has 71197 states and 122401 transitions. [2024-11-24 01:45:20,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.0) internal successors, (483), 19 states have internal predecessors, (483), 14 states have call successors, (122), 9 states have call predecessors, (122), 15 states have return successors, (119), 18 states have call predecessors, (119), 14 states have call successors, (119) [2024-11-24 01:45:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 71197 states and 122401 transitions. [2024-11-24 01:45:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2024-11-24 01:45:20,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:45:20,754 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 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, 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] [2024-11-24 01:45:20,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-24 01:45:20,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-24 01:45:20,954 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:45:20,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:45:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1207340401, now seen corresponding path program 1 times [2024-11-24 01:45:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:45:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921191806] [2024-11-24 01:45:20,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 29 proven. 139 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2024-11-24 01:45:22,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:22,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921191806] [2024-11-24 01:45:22,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921191806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:45:22,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100554517] [2024-11-24 01:45:22,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:22,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:45:22,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:45:22,805 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:45:22,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b0c95b6-dace-4c6c-b945-68e9a307eafa/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-24 01:45:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:23,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 4300 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:45:23,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:45:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2024-11-24 01:45:23,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:45:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100554517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:45:23,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:45:23,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 01:45:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982989344] [2024-11-24 01:45:23,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:45:23,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:45:23,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:45:23,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:45:23,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:45:23,932 INFO L87 Difference]: Start difference. First operand 71197 states and 122401 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36)