./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product11.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_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/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_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/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_91b3096a-c95f-407f-aa8c-c2448a935172/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 a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:42:20,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:42:20,233 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:42:20,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:42:20,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:42:20,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:42:20,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:42:20,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:42:20,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:42:20,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:42:20,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:42:20,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:42:20,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:42:20,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:42:20,288 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:42:20,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:42:20,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:42:20,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:42:20,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:42:20,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:42:20,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:42:20,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:42:20,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:42:20,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:42:20,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:42:20,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:42:20,292 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:42:20,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:42:20,292 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:42:20,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:42:20,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:42:20,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:42:20,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:42:20,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:42:20,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:42:20,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:42:20,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:42:20,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:42:20,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:42:20,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:42:20,294 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:42:20,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:42:20,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:42:20,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:42:20,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:42:20,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:42:20,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:42:20,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:42:20,295 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_91b3096a-c95f-407f-aa8c-c2448a935172/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 -> a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e [2024-11-24 00:42:20,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:42:20,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:42:20,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:42:20,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:42:20,648 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:42:20,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2024-11-24 00:42:23,757 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/data/4ebcebd91/59cef390758a41659fbe5db338aa3b82/FLAG53386e587 [2024-11-24 00:42:24,163 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:42:24,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2024-11-24 00:42:24,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/data/4ebcebd91/59cef390758a41659fbe5db338aa3b82/FLAG53386e587 [2024-11-24 00:42:24,202 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/data/4ebcebd91/59cef390758a41659fbe5db338aa3b82 [2024-11-24 00:42:24,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:42:24,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:42:24,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:42:24,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:42:24,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:42:24,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:42:24" (1/1) ... [2024-11-24 00:42:24,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c19a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:24, skipping insertion in model container [2024-11-24 00:42:24,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:42:24" (1/1) ... [2024-11-24 00:42:24,287 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:42:24,548 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_91b3096a-c95f-407f-aa8c-c2448a935172/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2024-11-24 00:42:24,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:42:24,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:42:24,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-24 00:42:24,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [86] [2024-11-24 00:42:24,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [186] [2024-11-24 00:42:24,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [195] [2024-11-24 00:42:24,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [315] [2024-11-24 00:42:24,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [355] [2024-11-24 00:42:24,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [705] [2024-11-24 00:42:24,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1071] [2024-11-24 00:42:24,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1738] [2024-11-24 00:42:24,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3255] [2024-11-24 00:42:24,952 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_91b3096a-c95f-407f-aa8c-c2448a935172/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2024-11-24 00:42:25,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:42:25,192 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:42:25,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25 WrapperNode [2024-11-24 00:42:25,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:42:25,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:42:25,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:42:25,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:42:25,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,267 INFO L138 Inliner]: procedures = 90, calls = 331, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 1059 [2024-11-24 00:42:25,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:42:25,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:42:25,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:42:25,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:42:25,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,326 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-24 00:42:25,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:42:25,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:42:25,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:42:25,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:42:25,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (1/1) ... [2024-11-24 00:42:25,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:42:25,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:25,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:42:25,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:42:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:42:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-24 00:42:25,512 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-24 00:42:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-24 00:42:25,512 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-24 00:42:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-24 00:42:25,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-24 00:42:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-24 00:42:25,512 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-24 00:42:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-24 00:42:25,512 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-24 00:42:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-24 00:42:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-24 00:42:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-24 00:42:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-24 00:42:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-24 00:42:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-24 00:42:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-24 00:42:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-24 00:42:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-24 00:42:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-24 00:42:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-24 00:42:25,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-24 00:42:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-24 00:42:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-24 00:42:25,514 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-24 00:42:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-24 00:42:25,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:42:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:42:25,514 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-24 00:42:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-24 00:42:25,514 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-24 00:42:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-24 00:42:25,514 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-24 00:42:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-24 00:42:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-24 00:42:25,516 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-24 00:42:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:42:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:42:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:42:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:42:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:42:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 00:42:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-24 00:42:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-24 00:42:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-24 00:42:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-24 00:42:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-24 00:42:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-24 00:42:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-24 00:42:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:42:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:42:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-24 00:42:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-24 00:42:25,761 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:42:25,765 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:42:27,136 INFO L? ?]: Removed 434 outVars from TransFormulas that were not future-live. [2024-11-24 00:42:27,136 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:42:27,160 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:42:27,160 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:42:27,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:42:27 BoogieIcfgContainer [2024-11-24 00:42:27,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:42:27,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:42:27,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:42:27,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:42:27,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:42:24" (1/3) ... [2024-11-24 00:42:27,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427fd2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:42:27, skipping insertion in model container [2024-11-24 00:42:27,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:25" (2/3) ... [2024-11-24 00:42:27,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427fd2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:42:27, skipping insertion in model container [2024-11-24 00:42:27,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:42:27" (3/3) ... [2024-11-24 00:42:27,171 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product11.cil.c [2024-11-24 00:42:27,185 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:42:27,187 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product11.cil.c that has 23 procedures, 525 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:42:27,275 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:42:27,291 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;@234ed0eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:42:27,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:42:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 525 states, 410 states have (on average 1.6853658536585365) internal successors, (691), 426 states have internal predecessors, (691), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-24 00:42:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:42:27,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:27,341 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:27,341 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:27,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash 673365048, now seen corresponding path program 1 times [2024-11-24 00:42:27,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:27,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079828168] [2024-11-24 00:42:27,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:27,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:28,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079828168] [2024-11-24 00:42:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079828168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:28,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:28,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:28,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186135085] [2024-11-24 00:42:28,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:28,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:28,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:28,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:28,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:28,198 INFO L87 Difference]: Start difference. First operand has 525 states, 410 states have (on average 1.6853658536585365) internal successors, (691), 426 states have internal predecessors, (691), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:28,475 INFO L93 Difference]: Finished difference Result 1043 states and 1746 transitions. [2024-11-24 00:42:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:28,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2024-11-24 00:42:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:28,502 INFO L225 Difference]: With dead ends: 1043 [2024-11-24 00:42:28,502 INFO L226 Difference]: Without dead ends: 520 [2024-11-24 00:42:28,514 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 00:42:28,517 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 6 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2562 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 00:42:28,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2562 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:42:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-24 00:42:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2024-11-24 00:42:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 406 states have (on average 1.6748768472906403) internal successors, (680), 421 states have internal predecessors, (680), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 861 transitions. [2024-11-24 00:42:28,624 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 861 transitions. Word has length 101 [2024-11-24 00:42:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:28,625 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 861 transitions. [2024-11-24 00:42:28,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 861 transitions. [2024-11-24 00:42:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 00:42:28,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:28,635 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:28,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:42:28,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:28,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1749826699, now seen corresponding path program 1 times [2024-11-24 00:42:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997017886] [2024-11-24 00:42:28,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:29,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997017886] [2024-11-24 00:42:29,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997017886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:29,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:29,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:29,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292703994] [2024-11-24 00:42:29,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:29,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:29,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:29,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:29,004 INFO L87 Difference]: Start difference. First operand 520 states and 861 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:29,140 INFO L93 Difference]: Finished difference Result 1023 states and 1699 transitions. [2024-11-24 00:42:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:42:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2024-11-24 00:42:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:29,150 INFO L225 Difference]: With dead ends: 1023 [2024-11-24 00:42:29,151 INFO L226 Difference]: Without dead ends: 520 [2024-11-24 00:42:29,155 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 00:42:29,158 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 4 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:29,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2534 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-24 00:42:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2024-11-24 00:42:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 406 states have (on average 1.6724137931034482) internal successors, (679), 421 states have internal predecessors, (679), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 860 transitions. [2024-11-24 00:42:29,227 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 860 transitions. Word has length 102 [2024-11-24 00:42:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:29,227 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 860 transitions. [2024-11-24 00:42:29,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 860 transitions. [2024-11-24 00:42:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:42:29,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:29,238 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:29,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:42:29,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:29,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:29,243 INFO L85 PathProgramCache]: Analyzing trace with hash 219558676, now seen corresponding path program 1 times [2024-11-24 00:42:29,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:29,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172518816] [2024-11-24 00:42:29,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:29,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:29,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:29,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172518816] [2024-11-24 00:42:29,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172518816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:29,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:29,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532361449] [2024-11-24 00:42:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:29,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:29,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:29,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:29,514 INFO L87 Difference]: Start difference. First operand 520 states and 860 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:29,624 INFO L93 Difference]: Finished difference Result 1023 states and 1698 transitions. [2024-11-24 00:42:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:42:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2024-11-24 00:42:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:29,630 INFO L225 Difference]: With dead ends: 1023 [2024-11-24 00:42:29,630 INFO L226 Difference]: Without dead ends: 520 [2024-11-24 00:42:29,634 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 00:42:29,636 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 3 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2534 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 00:42:29,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2534 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-24 00:42:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2024-11-24 00:42:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 406 states have (on average 1.6699507389162562) internal successors, (678), 421 states have internal predecessors, (678), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 859 transitions. [2024-11-24 00:42:29,679 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 859 transitions. Word has length 103 [2024-11-24 00:42:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:29,679 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 859 transitions. [2024-11-24 00:42:29,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 859 transitions. [2024-11-24 00:42:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:42:29,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:29,684 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:29,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:42:29,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:29,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:29,687 INFO L85 PathProgramCache]: Analyzing trace with hash -514950617, now seen corresponding path program 1 times [2024-11-24 00:42:29,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:29,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159125078] [2024-11-24 00:42:29,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:29,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:29,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159125078] [2024-11-24 00:42:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159125078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:29,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:29,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:29,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969837044] [2024-11-24 00:42:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:29,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:29,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:29,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:29,907 INFO L87 Difference]: Start difference. First operand 520 states and 859 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:29,993 INFO L93 Difference]: Finished difference Result 1023 states and 1697 transitions. [2024-11-24 00:42:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:42:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2024-11-24 00:42:29,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:29,998 INFO L225 Difference]: With dead ends: 1023 [2024-11-24 00:42:29,999 INFO L226 Difference]: Without dead ends: 520 [2024-11-24 00:42:30,002 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 00:42:30,003 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 2 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2534 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 00:42:30,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2534 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:30,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-24 00:42:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2024-11-24 00:42:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 406 states have (on average 1.667487684729064) internal successors, (677), 421 states have internal predecessors, (677), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 858 transitions. [2024-11-24 00:42:30,043 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 858 transitions. Word has length 104 [2024-11-24 00:42:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:30,044 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 858 transitions. [2024-11-24 00:42:30,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 858 transitions. [2024-11-24 00:42:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:42:30,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:30,050 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:30,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:42:30,053 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:30,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1944224240, now seen corresponding path program 1 times [2024-11-24 00:42:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:30,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084839865] [2024-11-24 00:42:30,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:30,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:30,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084839865] [2024-11-24 00:42:30,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084839865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:30,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:30,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:30,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630738351] [2024-11-24 00:42:30,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:30,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:30,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:30,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:30,266 INFO L87 Difference]: Start difference. First operand 520 states and 858 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:30,338 INFO L93 Difference]: Finished difference Result 1023 states and 1696 transitions. [2024-11-24 00:42:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:42:30,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-11-24 00:42:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:30,343 INFO L225 Difference]: With dead ends: 1023 [2024-11-24 00:42:30,343 INFO L226 Difference]: Without dead ends: 520 [2024-11-24 00:42:30,346 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 00:42:30,348 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 1 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2534 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 00:42:30,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2534 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-24 00:42:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2024-11-24 00:42:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 406 states have (on average 1.6650246305418719) internal successors, (676), 421 states have internal predecessors, (676), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 857 transitions. [2024-11-24 00:42:30,397 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 857 transitions. Word has length 105 [2024-11-24 00:42:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:30,397 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 857 transitions. [2024-11-24 00:42:30,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 857 transitions. [2024-11-24 00:42:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:42:30,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:30,402 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:30,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:42:30,402 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:30,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 328392643, now seen corresponding path program 1 times [2024-11-24 00:42:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:30,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205624836] [2024-11-24 00:42:30,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:30,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:30,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205624836] [2024-11-24 00:42:30,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205624836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:30,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:30,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:42:30,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12961920] [2024-11-24 00:42:30,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:30,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:42:30,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:30,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:42:30,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:42:30,719 INFO L87 Difference]: Start difference. First operand 520 states and 857 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-24 00:42:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:30,873 INFO L93 Difference]: Finished difference Result 1034 states and 1713 transitions. [2024-11-24 00:42:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:42:30,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2024-11-24 00:42:30,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:30,882 INFO L225 Difference]: With dead ends: 1034 [2024-11-24 00:42:30,882 INFO L226 Difference]: Without dead ends: 535 [2024-11-24 00:42:30,885 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 00:42:30,886 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 91 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 4979 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 00:42:30,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4979 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:42:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-24 00:42:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 533. [2024-11-24 00:42:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 416 states have (on average 1.6610576923076923) internal successors, (691), 433 states have internal predecessors, (691), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (94), 89 states have call predecessors, (94), 91 states have call successors, (94) [2024-11-24 00:42:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 877 transitions. [2024-11-24 00:42:30,921 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 877 transitions. Word has length 106 [2024-11-24 00:42:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:30,921 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 877 transitions. [2024-11-24 00:42:30,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-24 00:42:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 877 transitions. [2024-11-24 00:42:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:42:30,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:30,925 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:30,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:42:30,926 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:30,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1266924258, now seen corresponding path program 1 times [2024-11-24 00:42:30,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:30,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567386097] [2024-11-24 00:42:30,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:30,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:31,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567386097] [2024-11-24 00:42:31,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567386097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:31,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956594134] [2024-11-24 00:42:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:31,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:31,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:31,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:31,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:31,077 INFO L87 Difference]: Start difference. First operand 533 states and 877 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:31,175 INFO L93 Difference]: Finished difference Result 1041 states and 1724 transitions. [2024-11-24 00:42:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2024-11-24 00:42:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:31,181 INFO L225 Difference]: With dead ends: 1041 [2024-11-24 00:42:31,181 INFO L226 Difference]: Without dead ends: 529 [2024-11-24 00:42:31,184 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 00:42:31,185 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 1 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2529 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 00:42:31,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2529 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-24 00:42:31,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-24 00:42:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 414 states have (on average 1.6618357487922706) internal successors, (688), 430 states have internal predecessors, (688), 91 states have call successors, (91), 23 states have call predecessors, (91), 23 states have return successors, (91), 88 states have call predecessors, (91), 90 states have call successors, (91) [2024-11-24 00:42:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 870 transitions. [2024-11-24 00:42:31,219 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 870 transitions. Word has length 106 [2024-11-24 00:42:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:31,219 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 870 transitions. [2024-11-24 00:42:31,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 870 transitions. [2024-11-24 00:42:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:42:31,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:31,223 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:31,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:42:31,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:31,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1975944126, now seen corresponding path program 1 times [2024-11-24 00:42:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:31,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518696665] [2024-11-24 00:42:31,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:31,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:31,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:31,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518696665] [2024-11-24 00:42:31,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518696665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:31,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:42:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298234393] [2024-11-24 00:42:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:31,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:42:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:31,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:42:31,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:42:31,418 INFO L87 Difference]: Start difference. First operand 529 states and 870 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:31,793 INFO L93 Difference]: Finished difference Result 1084 states and 1796 transitions. [2024-11-24 00:42:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:42:31,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2024-11-24 00:42:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:31,798 INFO L225 Difference]: With dead ends: 1084 [2024-11-24 00:42:31,798 INFO L226 Difference]: Without dead ends: 561 [2024-11-24 00:42:31,802 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 00:42:31,803 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 72 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4016 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 00:42:31,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4016 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:42:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-24 00:42:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 534. [2024-11-24 00:42:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 419 states have (on average 1.6467780429594272) internal successors, (690), 434 states have internal predecessors, (690), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 871 transitions. [2024-11-24 00:42:31,830 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 871 transitions. Word has length 107 [2024-11-24 00:42:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:31,831 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 871 transitions. [2024-11-24 00:42:31,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 871 transitions. [2024-11-24 00:42:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:42:31,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:31,835 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:31,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:42:31,835 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:31,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:31,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1066719930, now seen corresponding path program 1 times [2024-11-24 00:42:31,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112212833] [2024-11-24 00:42:31,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:32,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:32,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112212833] [2024-11-24 00:42:32,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112212833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:32,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:32,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:42:32,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851221273] [2024-11-24 00:42:32,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:32,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:42:32,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:32,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:42:32,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:42:32,033 INFO L87 Difference]: Start difference. First operand 534 states and 871 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:32,308 INFO L93 Difference]: Finished difference Result 1035 states and 1691 transitions. [2024-11-24 00:42:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:32,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2024-11-24 00:42:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:32,314 INFO L225 Difference]: With dead ends: 1035 [2024-11-24 00:42:32,314 INFO L226 Difference]: Without dead ends: 552 [2024-11-24 00:42:32,317 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 00:42:32,317 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 56 mSDsluCounter, 3185 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:32,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3993 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:42:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-24 00:42:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 534. [2024-11-24 00:42:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 419 states have (on average 1.6372315035799523) internal successors, (686), 434 states have internal predecessors, (686), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 867 transitions. [2024-11-24 00:42:32,345 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 867 transitions. Word has length 108 [2024-11-24 00:42:32,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:32,346 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 867 transitions. [2024-11-24 00:42:32,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 867 transitions. [2024-11-24 00:42:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-24 00:42:32,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:32,349 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:32,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:42:32,350 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:32,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1780884089, now seen corresponding path program 1 times [2024-11-24 00:42:32,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:32,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942693990] [2024-11-24 00:42:32,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:32,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:32,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:32,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942693990] [2024-11-24 00:42:32,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942693990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:32,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:32,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:42:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523217513] [2024-11-24 00:42:32,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:32,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:42:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:32,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:42:32,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:42:32,536 INFO L87 Difference]: Start difference. First operand 534 states and 867 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:32,769 INFO L93 Difference]: Finished difference Result 1035 states and 1687 transitions. [2024-11-24 00:42:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:32,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2024-11-24 00:42:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:32,775 INFO L225 Difference]: With dead ends: 1035 [2024-11-24 00:42:32,775 INFO L226 Difference]: Without dead ends: 552 [2024-11-24 00:42:32,778 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 00:42:32,778 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 55 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3988 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 00:42:32,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3988 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:42:32,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-24 00:42:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 534. [2024-11-24 00:42:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 419 states have (on average 1.6276849642004774) internal successors, (682), 434 states have internal predecessors, (682), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 863 transitions. [2024-11-24 00:42:32,804 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 863 transitions. Word has length 109 [2024-11-24 00:42:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:32,805 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 863 transitions. [2024-11-24 00:42:32,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 863 transitions. [2024-11-24 00:42:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-24 00:42:32,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:32,809 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:32,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:42:32,809 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:32,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:32,809 INFO L85 PathProgramCache]: Analyzing trace with hash 7322119, now seen corresponding path program 1 times [2024-11-24 00:42:32,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:32,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296639344] [2024-11-24 00:42:32,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:32,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:33,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:33,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296639344] [2024-11-24 00:42:33,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296639344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:33,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:33,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:42:33,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432954671] [2024-11-24 00:42:33,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:33,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:42:33,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:33,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:42:33,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:42:33,048 INFO L87 Difference]: Start difference. First operand 534 states and 863 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-24 00:42:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:33,162 INFO L93 Difference]: Finished difference Result 1026 states and 1669 transitions. [2024-11-24 00:42:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:42:33,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 109 [2024-11-24 00:42:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:33,168 INFO L225 Difference]: With dead ends: 1026 [2024-11-24 00:42:33,168 INFO L226 Difference]: Without dead ends: 522 [2024-11-24 00:42:33,171 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 00:42:33,172 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 94 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 4902 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 00:42:33,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 4902 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:42:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-24 00:42:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 513. [2024-11-24 00:42:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 398 states have (on average 1.620603015075377) internal successors, (645), 413 states have internal predecessors, (645), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 826 transitions. [2024-11-24 00:42:33,198 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 826 transitions. Word has length 109 [2024-11-24 00:42:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:33,198 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 826 transitions. [2024-11-24 00:42:33,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-24 00:42:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 826 transitions. [2024-11-24 00:42:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-24 00:42:33,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:33,202 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:33,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:42:33,202 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:33,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1280479701, now seen corresponding path program 1 times [2024-11-24 00:42:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520253413] [2024-11-24 00:42:33,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:33,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520253413] [2024-11-24 00:42:33,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520253413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:33,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:33,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:42:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910227724] [2024-11-24 00:42:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:33,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:42:33,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:33,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:42:33,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:42:33,378 INFO L87 Difference]: Start difference. First operand 513 states and 826 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:33,523 INFO L93 Difference]: Finished difference Result 1005 states and 1632 transitions. [2024-11-24 00:42:33,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2024-11-24 00:42:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:33,528 INFO L225 Difference]: With dead ends: 1005 [2024-11-24 00:42:33,528 INFO L226 Difference]: Without dead ends: 522 [2024-11-24 00:42:33,531 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 00:42:33,532 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 39 mSDsluCounter, 3185 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3993 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 00:42:33,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3993 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:42:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-24 00:42:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 513. [2024-11-24 00:42:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 398 states have (on average 1.6180904522613064) internal successors, (644), 413 states have internal predecessors, (644), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 825 transitions. [2024-11-24 00:42:33,556 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 825 transitions. Word has length 110 [2024-11-24 00:42:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:33,557 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 825 transitions. [2024-11-24 00:42:33,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 825 transitions. [2024-11-24 00:42:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-24 00:42:33,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:33,560 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:33,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:42:33,560 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:33,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1783156020, now seen corresponding path program 1 times [2024-11-24 00:42:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:33,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658184824] [2024-11-24 00:42:33,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:33,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:33,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658184824] [2024-11-24 00:42:33,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658184824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:33,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:33,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:42:33,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139264863] [2024-11-24 00:42:33,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:33,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:42:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:33,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:42:33,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:42:33,771 INFO L87 Difference]: Start difference. First operand 513 states and 825 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:33,924 INFO L93 Difference]: Finished difference Result 1005 states and 1631 transitions. [2024-11-24 00:42:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:33,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2024-11-24 00:42:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:33,930 INFO L225 Difference]: With dead ends: 1005 [2024-11-24 00:42:33,930 INFO L226 Difference]: Without dead ends: 522 [2024-11-24 00:42:33,934 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 00:42:33,935 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 38 mSDsluCounter, 3185 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3993 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 00:42:33,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3993 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:42:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-24 00:42:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 513. [2024-11-24 00:42:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 398 states have (on average 1.6155778894472361) internal successors, (643), 413 states have internal predecessors, (643), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 824 transitions. [2024-11-24 00:42:33,968 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 824 transitions. Word has length 111 [2024-11-24 00:42:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:33,969 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 824 transitions. [2024-11-24 00:42:33,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 824 transitions. [2024-11-24 00:42:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 00:42:33,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:33,973 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:33,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:42:33,974 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:33,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1991706990, now seen corresponding path program 1 times [2024-11-24 00:42:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931863275] [2024-11-24 00:42:33,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931863275] [2024-11-24 00:42:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931863275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915043971] [2024-11-24 00:42:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:34,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:34,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:34,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:34,130 INFO L87 Difference]: Start difference. First operand 513 states and 824 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:34,219 INFO L93 Difference]: Finished difference Result 1005 states and 1630 transitions. [2024-11-24 00:42:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:34,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2024-11-24 00:42:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:34,225 INFO L225 Difference]: With dead ends: 1005 [2024-11-24 00:42:34,225 INFO L226 Difference]: Without dead ends: 522 [2024-11-24 00:42:34,229 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 00:42:34,229 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 45 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:34,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2367 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-24 00:42:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 513. [2024-11-24 00:42:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 398 states have (on average 1.6130653266331658) internal successors, (642), 413 states have internal predecessors, (642), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 823 transitions. [2024-11-24 00:42:34,262 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 823 transitions. Word has length 112 [2024-11-24 00:42:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:34,263 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 823 transitions. [2024-11-24 00:42:34,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 823 transitions. [2024-11-24 00:42:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 00:42:34,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:34,266 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:34,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:42:34,266 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:34,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 978404112, now seen corresponding path program 1 times [2024-11-24 00:42:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687155063] [2024-11-24 00:42:34,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:42:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:34,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687155063] [2024-11-24 00:42:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687155063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:34,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:34,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:42:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144716541] [2024-11-24 00:42:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:34,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:34,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:34,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:42:34,396 INFO L87 Difference]: Start difference. First operand 513 states and 823 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:34,477 INFO L93 Difference]: Finished difference Result 992 states and 1609 transitions. [2024-11-24 00:42:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:42:34,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2024-11-24 00:42:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:34,484 INFO L225 Difference]: With dead ends: 992 [2024-11-24 00:42:34,484 INFO L226 Difference]: Without dead ends: 515 [2024-11-24 00:42:34,487 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 00:42:34,487 INFO L435 NwaCegarLoop]: 786 mSDtfsCounter, 15 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2343 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 00:42:34,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2343 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-24 00:42:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-24 00:42:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 400 states have (on average 1.6075) internal successors, (643), 415 states have internal predecessors, (643), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-24 00:42:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 824 transitions. [2024-11-24 00:42:34,519 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 824 transitions. Word has length 112 [2024-11-24 00:42:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:34,519 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 824 transitions. [2024-11-24 00:42:34,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:42:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 824 transitions. [2024-11-24 00:42:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 00:42:34,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:34,522 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:34,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:42:34,522 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:34,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash 561189089, now seen corresponding path program 1 times [2024-11-24 00:42:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064776965] [2024-11-24 00:42:34,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:42:34,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:34,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064776965] [2024-11-24 00:42:34,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064776965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:34,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498887279] [2024-11-24 00:42:34,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:34,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:34,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:34,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:34,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:42:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:35,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:42:35,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:42:35,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:35,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498887279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:35,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:35,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:42:35,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282622500] [2024-11-24 00:42:35,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:35,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:42:35,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:35,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:42:35,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:42:35,295 INFO L87 Difference]: Start difference. First operand 515 states and 824 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:36,025 INFO L93 Difference]: Finished difference Result 995 states and 1635 transitions. [2024-11-24 00:42:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:36,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-24 00:42:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:36,030 INFO L225 Difference]: With dead ends: 995 [2024-11-24 00:42:36,031 INFO L226 Difference]: Without dead ends: 523 [2024-11-24 00:42:36,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 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 00:42:36,035 INFO L435 NwaCegarLoop]: 785 mSDtfsCounter, 769 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:36,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1999 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:42:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-24 00:42:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2024-11-24 00:42:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 407 states have (on average 1.6093366093366093) internal successors, (655), 422 states have internal predecessors, (655), 91 states have call successors, (91), 25 states have call predecessors, (91), 24 states have return successors, (91), 88 states have call predecessors, (91), 90 states have call successors, (91) [2024-11-24 00:42:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 837 transitions. [2024-11-24 00:42:36,068 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 837 transitions. Word has length 113 [2024-11-24 00:42:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:36,070 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 837 transitions. [2024-11-24 00:42:36,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 837 transitions. [2024-11-24 00:42:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 00:42:36,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:36,074 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:42:36,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:42:36,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:42:36,274 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:36,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -293759324, now seen corresponding path program 1 times [2024-11-24 00:42:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112626512] [2024-11-24 00:42:36,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 00:42:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112626512] [2024-11-24 00:42:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112626512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:36,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461830895] [2024-11-24 00:42:36,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:36,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:36,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:36,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:36,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:42:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:36,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:42:36,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 00:42:36,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461830895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:36,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:42:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645905070] [2024-11-24 00:42:36,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:36,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:42:36,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:36,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:42:36,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:42:36,988 INFO L87 Difference]: Start difference. First operand 523 states and 837 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:37,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:37,695 INFO L93 Difference]: Finished difference Result 1011 states and 1658 transitions. [2024-11-24 00:42:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:37,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2024-11-24 00:42:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:37,701 INFO L225 Difference]: With dead ends: 1011 [2024-11-24 00:42:37,701 INFO L226 Difference]: Without dead ends: 531 [2024-11-24 00:42:37,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 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 00:42:37,705 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 760 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:37,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1996 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:42:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-24 00:42:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2024-11-24 00:42:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 414 states have (on average 1.6111111111111112) internal successors, (667), 429 states have internal predecessors, (667), 91 states have call successors, (91), 26 states have call predecessors, (91), 25 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2024-11-24 00:42:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 850 transitions. [2024-11-24 00:42:37,735 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 850 transitions. Word has length 116 [2024-11-24 00:42:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:37,735 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 850 transitions. [2024-11-24 00:42:37,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 850 transitions. [2024-11-24 00:42:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-24 00:42:37,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:37,739 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] [2024-11-24 00:42:37,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:37,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:42:37,943 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:37,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 814902397, now seen corresponding path program 1 times [2024-11-24 00:42:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:37,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871757014] [2024-11-24 00:42:37,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:37,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-24 00:42:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871757014] [2024-11-24 00:42:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871757014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934856245] [2024-11-24 00:42:38,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:38,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:38,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:42:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:38,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:42:38,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-24 00:42:38,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934856245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:38,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:38,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:42:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616738399] [2024-11-24 00:42:38,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:38,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:42:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:38,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:42:38,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:42:38,623 INFO L87 Difference]: Start difference. First operand 531 states and 850 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:39,304 INFO L93 Difference]: Finished difference Result 1027 states and 1681 transitions. [2024-11-24 00:42:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2024-11-24 00:42:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:39,310 INFO L225 Difference]: With dead ends: 1027 [2024-11-24 00:42:39,310 INFO L226 Difference]: Without dead ends: 539 [2024-11-24 00:42:39,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 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 00:42:39,314 INFO L435 NwaCegarLoop]: 779 mSDtfsCounter, 757 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:39,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1993 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:42:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-24 00:42:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-24 00:42:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 421 states have (on average 1.6128266033254157) internal successors, (679), 436 states have internal predecessors, (679), 91 states have call successors, (91), 27 states have call predecessors, (91), 26 states have return successors, (93), 88 states have call predecessors, (93), 90 states have call successors, (93) [2024-11-24 00:42:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 863 transitions. [2024-11-24 00:42:39,349 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 863 transitions. Word has length 119 [2024-11-24 00:42:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:39,350 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 863 transitions. [2024-11-24 00:42:39,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 863 transitions. [2024-11-24 00:42:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-24 00:42:39,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:39,354 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] [2024-11-24 00:42:39,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:39,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:42:39,557 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:39,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:39,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1328371208, now seen corresponding path program 1 times [2024-11-24 00:42:39,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:39,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035972699] [2024-11-24 00:42:39,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:39,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 00:42:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:39,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035972699] [2024-11-24 00:42:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035972699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:39,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074295112] [2024-11-24 00:42:39,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:39,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:39,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:39,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:42:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:40,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:42:40,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 00:42:40,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074295112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:40,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:40,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:42:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708964047] [2024-11-24 00:42:40,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:40,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:42:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:40,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:42:40,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:42:40,255 INFO L87 Difference]: Start difference. First operand 539 states and 863 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:40,940 INFO L93 Difference]: Finished difference Result 1043 states and 1704 transitions. [2024-11-24 00:42:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2024-11-24 00:42:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:40,948 INFO L225 Difference]: With dead ends: 1043 [2024-11-24 00:42:40,950 INFO L226 Difference]: Without dead ends: 547 [2024-11-24 00:42:40,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 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 00:42:40,955 INFO L435 NwaCegarLoop]: 776 mSDtfsCounter, 751 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:40,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1990 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:42:40,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-24 00:42:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2024-11-24 00:42:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 428 states have (on average 1.6144859813084111) internal successors, (691), 443 states have internal predecessors, (691), 91 states have call successors, (91), 28 states have call predecessors, (91), 27 states have return successors, (94), 88 states have call predecessors, (94), 90 states have call successors, (94) [2024-11-24 00:42:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 876 transitions. [2024-11-24 00:42:40,987 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 876 transitions. Word has length 122 [2024-11-24 00:42:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:40,987 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 876 transitions. [2024-11-24 00:42:40,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:42:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 876 transitions. [2024-11-24 00:42:40,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-24 00:42:40,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:40,992 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] [2024-11-24 00:42:41,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:42:41,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:41,192 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:41,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash 530842137, now seen corresponding path program 1 times [2024-11-24 00:42:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:41,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113430064] [2024-11-24 00:42:41,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 00:42:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:41,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113430064] [2024-11-24 00:42:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113430064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:41,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513732804] [2024-11-24 00:42:41,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:41,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:41,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:42:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:41,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:42:41,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 00:42:42,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513732804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:42,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-24 00:42:42,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39682445] [2024-11-24 00:42:42,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:42,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:42:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:42,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:42:42,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:42:42,097 INFO L87 Difference]: Start difference. First operand 547 states and 876 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 00:42:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:42,903 INFO L93 Difference]: Finished difference Result 1553 states and 2555 transitions. [2024-11-24 00:42:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:42:42,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 125 [2024-11-24 00:42:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:42,911 INFO L225 Difference]: With dead ends: 1553 [2024-11-24 00:42:42,911 INFO L226 Difference]: Without dead ends: 1049 [2024-11-24 00:42:42,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:42:42,915 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 714 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:42,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 3614 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:42:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2024-11-24 00:42:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1042. [2024-11-24 00:42:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 815 states have (on average 1.6343558282208588) internal successors, (1332), 844 states have internal predecessors, (1332), 174 states have call successors, (174), 52 states have call predecessors, (174), 52 states have return successors, (193), 171 states have call predecessors, (193), 172 states have call successors, (193) [2024-11-24 00:42:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1699 transitions. [2024-11-24 00:42:42,984 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1699 transitions. Word has length 125 [2024-11-24 00:42:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:42,985 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1699 transitions. [2024-11-24 00:42:42,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 00:42:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1699 transitions. [2024-11-24 00:42:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-24 00:42:42,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:42,989 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:43,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:42:43,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:43,194 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:43,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:43,198 INFO L85 PathProgramCache]: Analyzing trace with hash 828492505, now seen corresponding path program 1 times [2024-11-24 00:42:43,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714826580] [2024-11-24 00:42:43,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:43,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 00:42:43,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714826580] [2024-11-24 00:42:43,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714826580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244591595] [2024-11-24 00:42:43,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:43,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:43,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:43,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:43,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:42:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:43,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:42:43,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:42:44,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:44,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244591595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-24 00:42:44,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872137028] [2024-11-24 00:42:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:44,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:42:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:44,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:42:44,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:42:44,040 INFO L87 Difference]: Start difference. First operand 1042 states and 1699 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:42:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:44,644 INFO L93 Difference]: Finished difference Result 2059 states and 3406 transitions. [2024-11-24 00:42:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:42:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-24 00:42:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:44,653 INFO L225 Difference]: With dead ends: 2059 [2024-11-24 00:42:44,654 INFO L226 Difference]: Without dead ends: 1060 [2024-11-24 00:42:44,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:42:44,660 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 734 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:44,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 3042 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:42:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2024-11-24 00:42:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1052. [2024-11-24 00:42:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 821 states have (on average 1.6297198538367843) internal successors, (1338), 853 states have internal predecessors, (1338), 176 states have call successors, (176), 53 states have call predecessors, (176), 54 states have return successors, (203), 171 states have call predecessors, (203), 174 states have call successors, (203) [2024-11-24 00:42:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1717 transitions. [2024-11-24 00:42:44,727 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1717 transitions. Word has length 127 [2024-11-24 00:42:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:44,727 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1717 transitions. [2024-11-24 00:42:44,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:42:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1717 transitions. [2024-11-24 00:42:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 00:42:44,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:44,732 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:44,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:42:44,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:44,936 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:44,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1670618711, now seen corresponding path program 1 times [2024-11-24 00:42:44,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:44,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178050349] [2024-11-24 00:42:44,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 00:42:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178050349] [2024-11-24 00:42:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178050349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986481656] [2024-11-24 00:42:45,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:45,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:45,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:45,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:45,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:42:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:45,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:42:45,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:42:45,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986481656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:45,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-24 00:42:45,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059157172] [2024-11-24 00:42:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:45,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:42:45,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:45,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:42:45,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:42:45,615 INFO L87 Difference]: Start difference. First operand 1052 states and 1717 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:42:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:45,729 INFO L93 Difference]: Finished difference Result 2556 states and 4243 transitions. [2024-11-24 00:42:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:42:45,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-11-24 00:42:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:45,741 INFO L225 Difference]: With dead ends: 2556 [2024-11-24 00:42:45,742 INFO L226 Difference]: Without dead ends: 1548 [2024-11-24 00:42:45,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:42:45,749 INFO L435 NwaCegarLoop]: 1465 mSDtfsCounter, 765 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2261 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 00:42:45,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 2261 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2024-11-24 00:42:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1052. [2024-11-24 00:42:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 821 states have (on average 1.628501827040195) internal successors, (1337), 853 states have internal predecessors, (1337), 176 states have call successors, (176), 53 states have call predecessors, (176), 54 states have return successors, (203), 171 states have call predecessors, (203), 174 states have call successors, (203) [2024-11-24 00:42:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1716 transitions. [2024-11-24 00:42:45,865 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1716 transitions. Word has length 132 [2024-11-24 00:42:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:45,865 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1716 transitions. [2024-11-24 00:42:45,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:42:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1716 transitions. [2024-11-24 00:42:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 00:42:45,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:45,869 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:45,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:42:46,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-24 00:42:46,070 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:46,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1922748711, now seen corresponding path program 1 times [2024-11-24 00:42:46,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:46,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67061407] [2024-11-24 00:42:46,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:46,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 00:42:46,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67061407] [2024-11-24 00:42:46,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67061407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055237428] [2024-11-24 00:42:46,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:46,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:46,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:46,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:42:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:46,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:42:46,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:42:46,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055237428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:46,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:46,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-24 00:42:46,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253620886] [2024-11-24 00:42:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:46,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:42:46,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:46,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:42:46,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:42:46,913 INFO L87 Difference]: Start difference. First operand 1052 states and 1716 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:42:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:47,046 INFO L93 Difference]: Finished difference Result 2632 states and 4319 transitions. [2024-11-24 00:42:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:47,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-11-24 00:42:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:47,060 INFO L225 Difference]: With dead ends: 2632 [2024-11-24 00:42:47,060 INFO L226 Difference]: Without dead ends: 1625 [2024-11-24 00:42:47,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:42:47,066 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 344 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:47,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 3434 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2024-11-24 00:42:47,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1625. [2024-11-24 00:42:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1273 states have (on average 1.6025137470542026) internal successors, (2040), 1310 states have internal predecessors, (2040), 260 states have call successors, (260), 89 states have call predecessors, (260), 91 states have return successors, (339), 251 states have call predecessors, (339), 256 states have call successors, (339) [2024-11-24 00:42:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2639 transitions. [2024-11-24 00:42:47,179 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2639 transitions. Word has length 132 [2024-11-24 00:42:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:47,180 INFO L471 AbstractCegarLoop]: Abstraction has 1625 states and 2639 transitions. [2024-11-24 00:42:47,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:42:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2639 transitions. [2024-11-24 00:42:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 00:42:47,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:47,184 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:47,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:47,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 00:42:47,389 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:47,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1156064859, now seen corresponding path program 1 times [2024-11-24 00:42:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:47,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912733762] [2024-11-24 00:42:47,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:47,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 00:42:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912733762] [2024-11-24 00:42:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912733762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344385510] [2024-11-24 00:42:47,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:47,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:47,788 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:47,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:42:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:48,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:42:48,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:42:48,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344385510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:48,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2024-11-24 00:42:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841662466] [2024-11-24 00:42:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:48,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:42:48,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:48,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:42:48,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:42:48,227 INFO L87 Difference]: Start difference. First operand 1625 states and 2639 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:42:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:48,311 INFO L93 Difference]: Finished difference Result 2955 states and 4794 transitions. [2024-11-24 00:42:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:42:48,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-11-24 00:42:48,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:48,332 INFO L225 Difference]: With dead ends: 2955 [2024-11-24 00:42:48,332 INFO L226 Difference]: Without dead ends: 1375 [2024-11-24 00:42:48,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:42:48,343 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 525 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:48,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1300 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-24 00:42:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1375. [2024-11-24 00:42:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1075 states have (on average 1.584186046511628) internal successors, (1703), 1103 states have internal predecessors, (1703), 219 states have call successors, (219), 81 states have call predecessors, (219), 80 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2024-11-24 00:42:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2197 transitions. [2024-11-24 00:42:48,436 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2197 transitions. Word has length 132 [2024-11-24 00:42:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:48,436 INFO L471 AbstractCegarLoop]: Abstraction has 1375 states and 2197 transitions. [2024-11-24 00:42:48,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:42:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2197 transitions. [2024-11-24 00:42:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:42:48,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:48,442 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:48,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:42:48,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:42:48,647 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:48,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1356631717, now seen corresponding path program 1 times [2024-11-24 00:42:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:48,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547931644] [2024-11-24 00:42:48,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:48,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-24 00:42:48,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547931644] [2024-11-24 00:42:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547931644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783235149] [2024-11-24 00:42:48,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:48,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:48,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:48,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:42:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:49,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:42:49,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 00:42:49,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783235149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:49,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 00:42:49,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429422048] [2024-11-24 00:42:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:49,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:49,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:49,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:49,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:42:49,371 INFO L87 Difference]: Start difference. First operand 1375 states and 2197 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:49,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:49,656 INFO L93 Difference]: Finished difference Result 2795 states and 4527 transitions. [2024-11-24 00:42:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:49,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2024-11-24 00:42:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:49,668 INFO L225 Difference]: With dead ends: 2795 [2024-11-24 00:42:49,669 INFO L226 Difference]: Without dead ends: 1465 [2024-11-24 00:42:49,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:42:49,676 INFO L435 NwaCegarLoop]: 743 mSDtfsCounter, 144 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2206 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 00:42:49,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2206 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:42:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2024-11-24 00:42:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1453. [2024-11-24 00:42:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1151 states have (on average 1.6064291920069504) internal successors, (1849), 1179 states have internal predecessors, (1849), 219 states have call successors, (219), 83 states have call predecessors, (219), 82 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2024-11-24 00:42:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2343 transitions. [2024-11-24 00:42:49,762 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2343 transitions. Word has length 155 [2024-11-24 00:42:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:49,763 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2343 transitions. [2024-11-24 00:42:49,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2343 transitions. [2024-11-24 00:42:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:42:49,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:49,769 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:49,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:42:49,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:42:49,970 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:49,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:49,971 INFO L85 PathProgramCache]: Analyzing trace with hash 630670072, now seen corresponding path program 1 times [2024-11-24 00:42:49,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529187108] [2024-11-24 00:42:49,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:49,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-24 00:42:50,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529187108] [2024-11-24 00:42:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529187108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536858566] [2024-11-24 00:42:50,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:50,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:50,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:50,265 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:50,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:42:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:50,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:42:50,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 00:42:50,684 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:50,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536858566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:50,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:50,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 00:42:50,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412870597] [2024-11-24 00:42:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:50,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:50,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:50,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:50,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:42:50,687 INFO L87 Difference]: Start difference. First operand 1453 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:50,988 INFO L93 Difference]: Finished difference Result 2957 states and 4821 transitions. [2024-11-24 00:42:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:50,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2024-11-24 00:42:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:51,003 INFO L225 Difference]: With dead ends: 2957 [2024-11-24 00:42:51,004 INFO L226 Difference]: Without dead ends: 1549 [2024-11-24 00:42:51,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:42:51,011 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 142 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2203 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 00:42:51,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2203 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:42:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2024-11-24 00:42:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1531. [2024-11-24 00:42:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1227 states have (on average 1.625916870415648) internal successors, (1995), 1255 states have internal predecessors, (1995), 219 states have call successors, (219), 85 states have call predecessors, (219), 84 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2024-11-24 00:42:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2489 transitions. [2024-11-24 00:42:51,098 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2489 transitions. Word has length 160 [2024-11-24 00:42:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:51,098 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2489 transitions. [2024-11-24 00:42:51,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2489 transitions. [2024-11-24 00:42:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:42:51,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:51,105 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:51,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:51,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:42:51,308 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:51,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash -569787032, now seen corresponding path program 1 times [2024-11-24 00:42:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:51,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173859502] [2024-11-24 00:42:51,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-24 00:42:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:51,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173859502] [2024-11-24 00:42:51,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173859502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:51,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692268797] [2024-11-24 00:42:51,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:51,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:51,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:51,609 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:51,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:42:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:51,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:42:51,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:42:52,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:52,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692268797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:52,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:52,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 00:42:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756655406] [2024-11-24 00:42:52,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:52,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:52,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:52,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:42:52,010 INFO L87 Difference]: Start difference. First operand 1531 states and 2489 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:52,362 INFO L93 Difference]: Finished difference Result 3119 states and 5115 transitions. [2024-11-24 00:42:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2024-11-24 00:42:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:52,378 INFO L225 Difference]: With dead ends: 3119 [2024-11-24 00:42:52,378 INFO L226 Difference]: Without dead ends: 1633 [2024-11-24 00:42:52,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:42:52,387 INFO L435 NwaCegarLoop]: 741 mSDtfsCounter, 140 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2200 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 00:42:52,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2200 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:42:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2024-11-24 00:42:52,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1609. [2024-11-24 00:42:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1303 states have (on average 1.6431312356101304) internal successors, (2141), 1331 states have internal predecessors, (2141), 219 states have call successors, (219), 87 states have call predecessors, (219), 86 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2024-11-24 00:42:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2635 transitions. [2024-11-24 00:42:52,517 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2635 transitions. Word has length 164 [2024-11-24 00:42:52,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:52,517 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2635 transitions. [2024-11-24 00:42:52,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2635 transitions. [2024-11-24 00:42:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 00:42:52,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:52,527 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:52,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:52,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:42:52,731 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:52,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1726217083, now seen corresponding path program 1 times [2024-11-24 00:42:52,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:52,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876744016] [2024-11-24 00:42:52,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:53,074 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 00:42:53,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876744016] [2024-11-24 00:42:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876744016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002975432] [2024-11-24 00:42:53,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:53,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:53,077 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:53,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:42:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:53,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:42:53,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 00:42:53,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:53,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002975432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:53,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:53,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 00:42:53,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628163272] [2024-11-24 00:42:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:53,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:53,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:53,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:42:53,500 INFO L87 Difference]: Start difference. First operand 1609 states and 2635 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:53,786 INFO L93 Difference]: Finished difference Result 3281 states and 5409 transitions. [2024-11-24 00:42:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:53,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2024-11-24 00:42:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:53,800 INFO L225 Difference]: With dead ends: 3281 [2024-11-24 00:42:53,803 INFO L226 Difference]: Without dead ends: 1717 [2024-11-24 00:42:53,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:42:53,812 INFO L435 NwaCegarLoop]: 740 mSDtfsCounter, 138 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:53,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2197 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:42:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2024-11-24 00:42:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1687. [2024-11-24 00:42:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1379 states have (on average 1.6584481508339377) internal successors, (2287), 1407 states have internal predecessors, (2287), 219 states have call successors, (219), 89 states have call predecessors, (219), 88 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2024-11-24 00:42:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2781 transitions. [2024-11-24 00:42:53,903 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2781 transitions. Word has length 167 [2024-11-24 00:42:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:53,905 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2781 transitions. [2024-11-24 00:42:53,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2781 transitions. [2024-11-24 00:42:53,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 00:42:53,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:53,911 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:53,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:42:54,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:42:54,112 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:54,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1276717653, now seen corresponding path program 1 times [2024-11-24 00:42:54,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:54,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135408225] [2024-11-24 00:42:54,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:54,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-24 00:42:54,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135408225] [2024-11-24 00:42:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135408225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025969526] [2024-11-24 00:42:54,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:54,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:54,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:54,424 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:54,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:42:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:54,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:42:54,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-24 00:42:54,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025969526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:54,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:54,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 00:42:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836401754] [2024-11-24 00:42:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:54,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:42:54,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:54,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:42:54,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:42:54,838 INFO L87 Difference]: Start difference. First operand 1687 states and 2781 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:55,122 INFO L93 Difference]: Finished difference Result 3443 states and 5703 transitions. [2024-11-24 00:42:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2024-11-24 00:42:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:55,140 INFO L225 Difference]: With dead ends: 3443 [2024-11-24 00:42:55,140 INFO L226 Difference]: Without dead ends: 1801 [2024-11-24 00:42:55,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:42:55,148 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 136 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2190 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 00:42:55,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2190 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:42:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2024-11-24 00:42:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1765. [2024-11-24 00:42:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1455 states have (on average 1.6721649484536083) internal successors, (2433), 1483 states have internal predecessors, (2433), 219 states have call successors, (219), 91 states have call predecessors, (219), 90 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2024-11-24 00:42:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2927 transitions. [2024-11-24 00:42:55,229 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2927 transitions. Word has length 169 [2024-11-24 00:42:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:55,231 INFO L471 AbstractCegarLoop]: Abstraction has 1765 states and 2927 transitions. [2024-11-24 00:42:55,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:42:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2927 transitions. [2024-11-24 00:42:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 00:42:55,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:55,238 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:55,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:55,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:42:55,443 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:55,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash -131976550, now seen corresponding path program 1 times [2024-11-24 00:42:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:55,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646257289] [2024-11-24 00:42:55,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-24 00:42:55,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646257289] [2024-11-24 00:42:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646257289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523262411] [2024-11-24 00:42:55,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:55,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:55,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:55,698 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:55,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:42:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:56,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-24 00:42:56,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-24 00:42:56,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523262411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:56,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2024-11-24 00:42:56,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957847963] [2024-11-24 00:42:56,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:56,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:42:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:56,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:42:56,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:42:56,359 INFO L87 Difference]: Start difference. First operand 1765 states and 2927 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:42:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:59,673 INFO L93 Difference]: Finished difference Result 5494 states and 9258 transitions. [2024-11-24 00:42:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:42:59,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 169 [2024-11-24 00:42:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:59,704 INFO L225 Difference]: With dead ends: 5494 [2024-11-24 00:42:59,704 INFO L226 Difference]: Without dead ends: 3410 [2024-11-24 00:42:59,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:42:59,716 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 1798 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 3742 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 4159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:59,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 2381 Invalid, 4159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3742 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 00:42:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2024-11-24 00:42:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3390. [2024-11-24 00:42:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 2751 states have (on average 1.6764812795347146) internal successors, (4612), 2833 states have internal predecessors, (4612), 455 states have call successors, (455), 163 states have call predecessors, (455), 183 states have return successors, (599), 451 states have call predecessors, (599), 451 states have call successors, (599) [2024-11-24 00:42:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5666 transitions. [2024-11-24 00:42:59,942 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5666 transitions. Word has length 169 [2024-11-24 00:42:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:59,942 INFO L471 AbstractCegarLoop]: Abstraction has 3390 states and 5666 transitions. [2024-11-24 00:42:59,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:42:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5666 transitions. [2024-11-24 00:42:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-24 00:42:59,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:59,955 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:59,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 00:43:00,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:00,159 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:00,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash 366576147, now seen corresponding path program 1 times [2024-11-24 00:43:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:00,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946832004] [2024-11-24 00:43:00,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:00,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-24 00:43:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946832004] [2024-11-24 00:43:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946832004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:43:00,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215021759] [2024-11-24 00:43:00,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:00,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:43:00,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:00,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:43:00,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:43:00,350 INFO L87 Difference]: Start difference. First operand 3390 states and 5666 transitions. Second operand has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:43:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:00,593 INFO L93 Difference]: Finished difference Result 6606 states and 11073 transitions. [2024-11-24 00:43:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:43:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 172 [2024-11-24 00:43:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:00,620 INFO L225 Difference]: With dead ends: 6606 [2024-11-24 00:43:00,620 INFO L226 Difference]: Without dead ends: 3123 [2024-11-24 00:43:00,634 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 00:43:00,634 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 32 mSDsluCounter, 4655 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5436 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 00:43:00,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 5436 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:43:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2024-11-24 00:43:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3111. [2024-11-24 00:43:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2572 states have (on average 1.697900466562986) internal successors, (4367), 2641 states have internal predecessors, (4367), 375 states have call successors, (375), 151 states have call predecessors, (375), 163 states have return successors, (469), 366 states have call predecessors, (469), 371 states have call successors, (469) [2024-11-24 00:43:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 5211 transitions. [2024-11-24 00:43:00,779 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 5211 transitions. Word has length 172 [2024-11-24 00:43:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:00,779 INFO L471 AbstractCegarLoop]: Abstraction has 3111 states and 5211 transitions. [2024-11-24 00:43:00,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:43:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 5211 transitions. [2024-11-24 00:43:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-24 00:43:00,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:00,801 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:00,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 00:43:00,801 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:00,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash -254016606, now seen corresponding path program 1 times [2024-11-24 00:43:00,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:00,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349394173] [2024-11-24 00:43:00,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:00,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 36 proven. 99 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2024-11-24 00:43:01,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349394173] [2024-11-24 00:43:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349394173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:43:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453101795] [2024-11-24 00:43:01,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:01,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:01,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:01,520 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:43:01,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:43:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:02,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 3163 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:43:02,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 341 proven. 50 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-11-24 00:43:02,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:43:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 57 proven. 93 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2024-11-24 00:43:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453101795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:43:03,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:43:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 14] total 27 [2024-11-24 00:43:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19268242] [2024-11-24 00:43:03,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:43:03,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:43:03,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:04,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:43:04,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:43:04,000 INFO L87 Difference]: Start difference. First operand 3111 states and 5211 transitions. Second operand has 27 states, 25 states have (on average 14.72) internal successors, (368), 23 states have internal predecessors, (368), 17 states have call successors, (89), 8 states have call predecessors, (89), 14 states have return successors, (90), 20 states have call predecessors, (90), 17 states have call successors, (90) [2024-11-24 00:44:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:03,252 INFO L93 Difference]: Finished difference Result 46985 states and 83762 transitions. [2024-11-24 00:44:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 430 states. [2024-11-24 00:44:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 14.72) internal successors, (368), 23 states have internal predecessors, (368), 17 states have call successors, (89), 8 states have call predecessors, (89), 14 states have return successors, (90), 20 states have call predecessors, (90), 17 states have call successors, (90) Word has length 459 [2024-11-24 00:44:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:03,633 INFO L225 Difference]: With dead ends: 46985 [2024-11-24 00:44:03,634 INFO L226 Difference]: Without dead ends: 43814 [2024-11-24 00:44:03,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1029 SyntacticMatches, 4 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93145 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=16349, Invalid=183013, Unknown=0, NotChecked=0, Total=199362 [2024-11-24 00:44:03,851 INFO L435 NwaCegarLoop]: 2400 mSDtfsCounter, 43014 mSDsluCounter, 21934 mSDsCounter, 0 mSdLazyCounter, 68338 mSolverCounterSat, 15625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43028 SdHoareTripleChecker+Valid, 24334 SdHoareTripleChecker+Invalid, 83963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 15625 IncrementalHoareTripleChecker+Valid, 68338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:03,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43028 Valid, 24334 Invalid, 83963 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [15625 Valid, 68338 Invalid, 0 Unknown, 0 Unchecked, 42.6s Time] [2024-11-24 00:44:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43814 states. [2024-11-24 00:44:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43814 to 35821. [2024-11-24 00:44:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35821 states, 29621 states have (on average 1.6796191890888221) internal successors, (49752), 30486 states have internal predecessors, (49752), 4054 states have call successors, (4054), 1795 states have call predecessors, (4054), 2145 states have return successors, (6439), 4115 states have call predecessors, (6439), 4036 states have call successors, (6439) [2024-11-24 00:44:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35821 states to 35821 states and 60245 transitions. [2024-11-24 00:44:07,372 INFO L78 Accepts]: Start accepts. Automaton has 35821 states and 60245 transitions. Word has length 459 [2024-11-24 00:44:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:07,373 INFO L471 AbstractCegarLoop]: Abstraction has 35821 states and 60245 transitions. [2024-11-24 00:44:07,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 14.72) internal successors, (368), 23 states have internal predecessors, (368), 17 states have call successors, (89), 8 states have call predecessors, (89), 14 states have return successors, (90), 20 states have call predecessors, (90), 17 states have call successors, (90) [2024-11-24 00:44:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 35821 states and 60245 transitions. [2024-11-24 00:44:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-24 00:44:07,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:07,608 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:07,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 00:44:07,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 00:44:07,810 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:07,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1927833892, now seen corresponding path program 1 times [2024-11-24 00:44:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:07,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265426841] [2024-11-24 00:44:07,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:07,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 61 proven. 68 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2024-11-24 00:44:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265426841] [2024-11-24 00:44:09,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265426841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172478984] [2024-11-24 00:44:09,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:09,739 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:09,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:44:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:10,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:44:10,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 661 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2024-11-24 00:44:10,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:44:10,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172478984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:10,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:44:10,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-24 00:44:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090336207] [2024-11-24 00:44:10,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:10,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:44:10,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:10,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:44:10,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:44:10,617 INFO L87 Difference]: Start difference. First operand 35821 states and 60245 transitions. Second operand has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 5 states have internal predecessors, (229), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-24 00:44:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:12,891 INFO L93 Difference]: Finished difference Result 72023 states and 121785 transitions. [2024-11-24 00:44:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:44:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 5 states have internal predecessors, (229), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) Word has length 503 [2024-11-24 00:44:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:13,120 INFO L225 Difference]: With dead ends: 72023 [2024-11-24 00:44:13,120 INFO L226 Difference]: Without dead ends: 36271 [2024-11-24 00:44:13,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:44:13,301 INFO L435 NwaCegarLoop]: 797 mSDtfsCounter, 0 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:13,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3976 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36271 states. [2024-11-24 00:44:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36271 to 36145. [2024-11-24 00:44:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36145 states, 29855 states have (on average 1.6742924133311003) internal successors, (49986), 30762 states have internal predecessors, (49986), 4054 states have call successors, (4054), 1795 states have call predecessors, (4054), 2235 states have return successors, (6616), 4163 states have call predecessors, (6616), 4036 states have call successors, (6616) [2024-11-24 00:44:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36145 states to 36145 states and 60656 transitions. [2024-11-24 00:44:16,269 INFO L78 Accepts]: Start accepts. Automaton has 36145 states and 60656 transitions. Word has length 503 [2024-11-24 00:44:16,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:16,271 INFO L471 AbstractCegarLoop]: Abstraction has 36145 states and 60656 transitions. [2024-11-24 00:44:16,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 5 states have internal predecessors, (229), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-24 00:44:16,272 INFO L276 IsEmpty]: Start isEmpty. Operand 36145 states and 60656 transitions. [2024-11-24 00:44:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-11-24 00:44:16,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:16,405 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:16,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 00:44:16,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 00:44:16,606 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:16,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2109296045, now seen corresponding path program 1 times [2024-11-24 00:44:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549728398] [2024-11-24 00:44:16,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 90 proven. 95 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2024-11-24 00:44:17,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:17,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549728398] [2024-11-24 00:44:17,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549728398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:17,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61532049] [2024-11-24 00:44:17,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:17,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:17,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:17,726 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:17,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 00:44:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:18,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 3446 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:44:18,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 1107 proven. 10 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-11-24 00:44:19,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:44:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 130 proven. 68 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-11-24 00:44:20,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61532049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:44:20,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:44:20,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 23 [2024-11-24 00:44:20,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788879308] [2024-11-24 00:44:20,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:44:20,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 00:44:20,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:20,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 00:44:20,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:44:20,308 INFO L87 Difference]: Start difference. First operand 36145 states and 60656 transitions. Second operand has 23 states, 22 states have (on average 23.5) internal successors, (517), 21 states have internal predecessors, (517), 15 states have call successors, (123), 8 states have call predecessors, (123), 16 states have return successors, (125), 16 states have call predecessors, (125), 15 states have call successors, (125) [2024-11-24 00:44:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:38,414 INFO L93 Difference]: Finished difference Result 140062 states and 248989 transitions. [2024-11-24 00:44:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-24 00:44:38,414 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 23.5) internal successors, (517), 21 states have internal predecessors, (517), 15 states have call successors, (123), 8 states have call predecessors, (123), 16 states have return successors, (125), 16 states have call predecessors, (125), 15 states have call successors, (125) Word has length 551 [2024-11-24 00:44:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:39,629 INFO L225 Difference]: With dead ends: 140062 [2024-11-24 00:44:39,629 INFO L226 Difference]: Without dead ends: 103894 [2024-11-24 00:44:40,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1108 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1294, Invalid=6188, Unknown=0, NotChecked=0, Total=7482 [2024-11-24 00:44:40,023 INFO L435 NwaCegarLoop]: 730 mSDtfsCounter, 13433 mSDsluCounter, 5556 mSDsCounter, 0 mSdLazyCounter, 15437 mSolverCounterSat, 4735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13433 SdHoareTripleChecker+Valid, 6286 SdHoareTripleChecker+Invalid, 20172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4735 IncrementalHoareTripleChecker+Valid, 15437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:40,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13433 Valid, 6286 Invalid, 20172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4735 Valid, 15437 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-24 00:44:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103894 states. [2024-11-24 00:44:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103894 to 88053. [2024-11-24 00:44:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88053 states, 72634 states have (on average 1.6735826197097778) internal successors, (121559), 74834 states have internal predecessors, (121559), 9767 states have call successors, (9767), 4505 states have call predecessors, (9767), 5651 states have return successors, (16292), 10153 states have call predecessors, (16292), 9741 states have call successors, (16292) [2024-11-24 00:44:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88053 states to 88053 states and 147618 transitions. [2024-11-24 00:44:46,956 INFO L78 Accepts]: Start accepts. Automaton has 88053 states and 147618 transitions. Word has length 551 [2024-11-24 00:44:46,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:46,956 INFO L471 AbstractCegarLoop]: Abstraction has 88053 states and 147618 transitions. [2024-11-24 00:44:46,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 23.5) internal successors, (517), 21 states have internal predecessors, (517), 15 states have call successors, (123), 8 states have call predecessors, (123), 16 states have return successors, (125), 16 states have call predecessors, (125), 15 states have call successors, (125) [2024-11-24 00:44:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 88053 states and 147618 transitions. [2024-11-24 00:44:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-24 00:44:47,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:47,187 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:44:47,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-24 00:44:47,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 00:44:47,392 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:47,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1566258881, now seen corresponding path program 1 times [2024-11-24 00:44:47,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:47,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212281575] [2024-11-24 00:44:47,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 63 proven. 81 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2024-11-24 00:44:48,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212281575] [2024-11-24 00:44:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212281575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648385501] [2024-11-24 00:44:48,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:48,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:48,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:48,131 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:48,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91b3096a-c95f-407f-aa8c-c2448a935172/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 00:44:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:48,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:44:48,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 600 proven. 4 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-11-24 00:44:49,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:44:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 63 proven. 81 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2024-11-24 00:44:49,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648385501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:44:49,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:44:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-24 00:44:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727074587] [2024-11-24 00:44:49,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:44:49,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:44:49,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:49,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:44:49,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:44:49,775 INFO L87 Difference]: Start difference. First operand 88053 states and 147618 transitions. Second operand has 18 states, 18 states have (on average 23.333333333333332) internal successors, (420), 18 states have internal predecessors, (420), 11 states have call successors, (93), 7 states have call predecessors, (93), 11 states have return successors, (94), 12 states have call predecessors, (94), 11 states have call successors, (94)