./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6cc861ca86011eb32ffd09a18c7045c0cb28e684d3b73d1659bc499a4213e84 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:07:27,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:07:27,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:07:27,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:07:27,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:07:27,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:07:27,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:07:27,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:07:27,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:07:27,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:07:27,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:07:27,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:07:27,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:07:27,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:07:27,250 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:07:27,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:07:27,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:07:27,250 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:07:27,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:07:27,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:07:27,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:07:27,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:07:27,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:07:27,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:07:27,252 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:07:27,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:07:27,252 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:07:27,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:07:27,253 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:07:27,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:27,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:27,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:27,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:27,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:07:27,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:27,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:27,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:27,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:27,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:07:27,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:07:27,254 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:07:27,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:07:27,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:07:27,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:07:27,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:07:27,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:07:27,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:07:27,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:07:27,257 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_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6cc861ca86011eb32ffd09a18c7045c0cb28e684d3b73d1659bc499a4213e84 [2024-11-28 04:07:27,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:07:27,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:07:27,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:07:27,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:07:27,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:07:27,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c [2024-11-28 04:07:31,168 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/data/6ac754a26/68a4d3258acc47e19b2c9e8191cc9ecb/FLAG08e39be0c [2024-11-28 04:07:31,853 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:07:31,854 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c [2024-11-28 04:07:31,893 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/data/6ac754a26/68a4d3258acc47e19b2c9e8191cc9ecb/FLAG08e39be0c [2024-11-28 04:07:31,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/data/6ac754a26/68a4d3258acc47e19b2c9e8191cc9ecb [2024-11-28 04:07:31,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:07:31,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:07:31,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:07:31,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:07:31,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:07:31,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:07:31" (1/1) ... [2024-11-28 04:07:31,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5743ff55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:31, skipping insertion in model container [2024-11-28 04:07:31,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:07:31" (1/1) ... [2024-11-28 04:07:32,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:07:32,891 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_718d3b04-6418-4e0c-9e32-a68815b7f964/sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c[69987,70000] [2024-11-28 04:07:32,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:07:32,913 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:07:32,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-28 04:07:32,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2024-11-28 04:07:32,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [517] [2024-11-28 04:07:32,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [558] [2024-11-28 04:07:32,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [911] [2024-11-28 04:07:32,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [946] [2024-11-28 04:07:32,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [960] [2024-11-28 04:07:32,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1627] [2024-11-28 04:07:32,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3197] [2024-11-28 04:07:32,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3315] [2024-11-28 04:07:33,160 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_718d3b04-6418-4e0c-9e32-a68815b7f964/sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c[69987,70000] [2024-11-28 04:07:33,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:07:33,210 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:07:33,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33 WrapperNode [2024-11-28 04:07:33,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:07:33,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:07:33,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:07:33,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:07:33,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,310 INFO L138 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1058 [2024-11-28 04:07:33,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:07:33,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:07:33,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:07:33,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:07:33,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,380 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 04:07:33,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,420 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:07:33,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:07:33,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:07:33,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:07:33,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:33,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:33,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:07:33,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:07:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:07:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 04:07:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 04:07:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-28 04:07:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-28 04:07:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-28 04:07:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-28 04:07:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 04:07:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 04:07:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-28 04:07:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-28 04:07:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 04:07:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 04:07:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 04:07:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 04:07:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 04:07:33,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 04:07:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 04:07:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 04:07:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 04:07:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 04:07:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-28 04:07:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-28 04:07:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 04:07:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 04:07:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 04:07:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 04:07:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 04:07:33,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 04:07:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 04:07:33,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 04:07:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 04:07:33,557 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 04:07:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 04:07:33,557 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 04:07:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 04:07:33,557 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 04:07:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 04:07:33,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 04:07:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 04:07:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 04:07:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:07:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:07:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:07:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 04:07:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 04:07:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 04:07:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 04:07:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:07:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:07:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 04:07:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 04:07:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-28 04:07:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-28 04:07:33,832 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:07:33,836 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:07:35,642 INFO L? ?]: Removed 441 outVars from TransFormulas that were not future-live. [2024-11-28 04:07:35,644 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:07:35,691 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:07:35,691 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:07:35,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:07:35 BoogieIcfgContainer [2024-11-28 04:07:35,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:07:35,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:07:35,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:07:35,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:07:35,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:07:31" (1/3) ... [2024-11-28 04:07:35,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f383317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:07:35, skipping insertion in model container [2024-11-28 04:07:35,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (2/3) ... [2024-11-28 04:07:35,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f383317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:07:35, skipping insertion in model container [2024-11-28 04:07:35,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:07:35" (3/3) ... [2024-11-28 04:07:35,710 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product20.cil.c [2024-11-28 04:07:35,729 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:07:35,733 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product20.cil.c that has 26 procedures, 544 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:07:35,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:07:35,875 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;@95b26de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:07:35,875 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:07:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 544 states, 420 states have (on average 1.6714285714285715) internal successors, (702), 438 states have internal predecessors, (702), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-28 04:07:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:07:35,902 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:35,902 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:35,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:35,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash 789611442, now seen corresponding path program 1 times [2024-11-28 04:07:35,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:35,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247220251] [2024-11-28 04:07:35,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:35,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:36,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:36,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247220251] [2024-11-28 04:07:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247220251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:36,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:36,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:07:36,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136223344] [2024-11-28 04:07:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:36,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:36,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:36,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:07:36,766 INFO L87 Difference]: Start difference. First operand has 544 states, 420 states have (on average 1.6714285714285715) internal successors, (702), 438 states have internal predecessors, (702), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:37,135 INFO L93 Difference]: Finished difference Result 1081 states and 1792 transitions. [2024-11-28 04:07:37,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:07:37,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-28 04:07:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:37,168 INFO L225 Difference]: With dead ends: 1081 [2024-11-28 04:07:37,168 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:07:37,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:07:37,183 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 6 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:37,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2631 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:07:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:07:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:07:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 416 states have (on average 1.6610576923076923) internal successors, (691), 433 states have internal predecessors, (691), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 884 transitions. [2024-11-28 04:07:37,317 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 884 transitions. Word has length 63 [2024-11-28 04:07:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:37,322 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 884 transitions. [2024-11-28 04:07:37,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 884 transitions. [2024-11-28 04:07:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:07:37,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:37,329 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:37,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:07:37,329 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:37,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2056415281, now seen corresponding path program 1 times [2024-11-28 04:07:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:37,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984126736] [2024-11-28 04:07:37,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:37,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984126736] [2024-11-28 04:07:37,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984126736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:37,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:37,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:07:37,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578797070] [2024-11-28 04:07:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:37,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:37,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:37,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:37,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:07:37,704 INFO L87 Difference]: Start difference. First operand 539 states and 884 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:37,891 INFO L93 Difference]: Finished difference Result 1061 states and 1745 transitions. [2024-11-28 04:07:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:07:37,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2024-11-28 04:07:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:37,904 INFO L225 Difference]: With dead ends: 1061 [2024-11-28 04:07:37,904 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:07:37,908 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 [2024-11-28 04:07:37,912 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 4 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2603 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 [2024-11-28 04:07:37,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2603 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:07:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:07:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 416 states have (on average 1.6586538461538463) internal successors, (690), 433 states have internal predecessors, (690), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 883 transitions. [2024-11-28 04:07:38,010 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 883 transitions. Word has length 64 [2024-11-28 04:07:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:38,010 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 883 transitions. [2024-11-28 04:07:38,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 883 transitions. [2024-11-28 04:07:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 04:07:38,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:38,021 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:38,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:07:38,021 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:38,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1454341390, now seen corresponding path program 1 times [2024-11-28 04:07:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:38,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932844005] [2024-11-28 04:07:38,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:38,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:38,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932844005] [2024-11-28 04:07:38,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932844005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:38,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:38,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:07:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563984424] [2024-11-28 04:07:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:38,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:38,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:38,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:07:38,367 INFO L87 Difference]: Start difference. First operand 539 states and 883 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:38,498 INFO L93 Difference]: Finished difference Result 1061 states and 1744 transitions. [2024-11-28 04:07:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:07:38,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2024-11-28 04:07:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:38,511 INFO L225 Difference]: With dead ends: 1061 [2024-11-28 04:07:38,511 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:07:38,515 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 [2024-11-28 04:07:38,517 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 3 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2603 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 [2024-11-28 04:07:38,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2603 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:07:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:07:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 416 states have (on average 1.65625) internal successors, (689), 433 states have internal predecessors, (689), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 882 transitions. [2024-11-28 04:07:38,579 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 882 transitions. Word has length 65 [2024-11-28 04:07:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:38,579 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 882 transitions. [2024-11-28 04:07:38,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 882 transitions. [2024-11-28 04:07:38,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:07:38,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:38,582 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:38,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:07:38,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:38,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1248367283, now seen corresponding path program 1 times [2024-11-28 04:07:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:38,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821226293] [2024-11-28 04:07:38,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821226293] [2024-11-28 04:07:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821226293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:38,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:38,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:07:38,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233061393] [2024-11-28 04:07:38,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:38,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:38,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:38,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:38,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:07:38,886 INFO L87 Difference]: Start difference. First operand 539 states and 882 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:39,003 INFO L93 Difference]: Finished difference Result 1061 states and 1743 transitions. [2024-11-28 04:07:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:07:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2024-11-28 04:07:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:39,011 INFO L225 Difference]: With dead ends: 1061 [2024-11-28 04:07:39,012 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:07:39,016 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 [2024-11-28 04:07:39,021 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 2 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2603 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 [2024-11-28 04:07:39,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2603 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:39,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:07:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:07:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 416 states have (on average 1.6538461538461537) internal successors, (688), 433 states have internal predecessors, (688), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 881 transitions. [2024-11-28 04:07:39,085 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 881 transitions. Word has length 66 [2024-11-28 04:07:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:39,091 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 881 transitions. [2024-11-28 04:07:39,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 881 transitions. [2024-11-28 04:07:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:07:39,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:39,093 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:39,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:07:39,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:39,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash -351277462, now seen corresponding path program 1 times [2024-11-28 04:07:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529971726] [2024-11-28 04:07:39,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529971726] [2024-11-28 04:07:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529971726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:39,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:39,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:07:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573270789] [2024-11-28 04:07:39,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:39,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:39,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:39,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:39,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:07:39,368 INFO L87 Difference]: Start difference. First operand 539 states and 881 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:39,450 INFO L93 Difference]: Finished difference Result 1061 states and 1742 transitions. [2024-11-28 04:07:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:07:39,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2024-11-28 04:07:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:39,459 INFO L225 Difference]: With dead ends: 1061 [2024-11-28 04:07:39,459 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:07:39,462 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 [2024-11-28 04:07:39,463 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 1 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2603 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 [2024-11-28 04:07:39,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2603 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:07:39,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-28 04:07:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 416 states have (on average 1.6514423076923077) internal successors, (687), 433 states have internal predecessors, (687), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 880 transitions. [2024-11-28 04:07:39,516 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 880 transitions. Word has length 67 [2024-11-28 04:07:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:39,517 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 880 transitions. [2024-11-28 04:07:39,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 880 transitions. [2024-11-28 04:07:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:07:39,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:39,519 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:39,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:07:39,519 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:39,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash 470415977, now seen corresponding path program 1 times [2024-11-28 04:07:39,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:39,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289707879] [2024-11-28 04:07:39,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:39,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289707879] [2024-11-28 04:07:39,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289707879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:39,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:39,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:07:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924632037] [2024-11-28 04:07:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:39,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:07:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:39,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:07:39,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:07:39,967 INFO L87 Difference]: Start difference. First operand 539 states and 880 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:40,219 INFO L93 Difference]: Finished difference Result 1072 states and 1759 transitions. [2024-11-28 04:07:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:07:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-11-28 04:07:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:40,228 INFO L225 Difference]: With dead ends: 1072 [2024-11-28 04:07:40,228 INFO L226 Difference]: Without dead ends: 554 [2024-11-28 04:07:40,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:07:40,233 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 91 mSDsluCounter, 5968 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6833 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:40,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6833 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:07:40,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-28 04:07:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 552. [2024-11-28 04:07:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 426 states have (on average 1.647887323943662) internal successors, (702), 445 states have internal predecessors, (702), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-11-28 04:07:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 900 transitions. [2024-11-28 04:07:40,280 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 900 transitions. Word has length 68 [2024-11-28 04:07:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:40,281 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 900 transitions. [2024-11-28 04:07:40,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 900 transitions. [2024-11-28 04:07:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:07:40,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:40,284 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:40,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:07:40,285 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:40,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1239585992, now seen corresponding path program 1 times [2024-11-28 04:07:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684875744] [2024-11-28 04:07:40,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:40,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684875744] [2024-11-28 04:07:40,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684875744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:40,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:07:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826632393] [2024-11-28 04:07:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:40,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:07:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:40,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:07:40,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:07:40,459 INFO L87 Difference]: Start difference. First operand 552 states and 900 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:40,561 INFO L93 Difference]: Finished difference Result 1079 states and 1770 transitions. [2024-11-28 04:07:40,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:07:40,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-28 04:07:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:40,573 INFO L225 Difference]: With dead ends: 1079 [2024-11-28 04:07:40,574 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 04:07:40,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:07:40,578 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 1 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2598 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 [2024-11-28 04:07:40,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:40,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 04:07:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 04:07:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 424 states have (on average 1.6485849056603774) internal successors, (699), 442 states have internal predecessors, (699), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 93 states have call predecessors, (97), 96 states have call successors, (97) [2024-11-28 04:07:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 893 transitions. [2024-11-28 04:07:40,619 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 893 transitions. Word has length 68 [2024-11-28 04:07:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:40,619 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 893 transitions. [2024-11-28 04:07:40,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 893 transitions. [2024-11-28 04:07:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:07:40,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:40,623 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:40,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:07:40,623 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:40,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1938086140, now seen corresponding path program 1 times [2024-11-28 04:07:40,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:40,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000603234] [2024-11-28 04:07:40,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:40,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:40,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:40,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000603234] [2024-11-28 04:07:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000603234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:40,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:40,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:07:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928082857] [2024-11-28 04:07:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:40,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:07:40,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:40,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:07:40,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:07:40,859 INFO L87 Difference]: Start difference. First operand 548 states and 893 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:41,301 INFO L93 Difference]: Finished difference Result 1122 states and 1842 transitions. [2024-11-28 04:07:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:07:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2024-11-28 04:07:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:41,310 INFO L225 Difference]: With dead ends: 1122 [2024-11-28 04:07:41,311 INFO L226 Difference]: Without dead ends: 580 [2024-11-28 04:07:41,314 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 [2024-11-28 04:07:41,316 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 72 mSDsluCounter, 3289 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4131 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 [2024-11-28 04:07:41,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4131 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:07:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-28 04:07:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 553. [2024-11-28 04:07:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 429 states have (on average 1.634032634032634) internal successors, (701), 446 states have internal predecessors, (701), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 894 transitions. [2024-11-28 04:07:41,356 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 894 transitions. Word has length 69 [2024-11-28 04:07:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:41,356 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 894 transitions. [2024-11-28 04:07:41,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 894 transitions. [2024-11-28 04:07:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:07:41,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:41,358 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:41,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:07:41,359 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:41,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1793440340, now seen corresponding path program 1 times [2024-11-28 04:07:41,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:41,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459320741] [2024-11-28 04:07:41,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:41,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:41,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:41,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459320741] [2024-11-28 04:07:41,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459320741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:41,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:41,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:07:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223094621] [2024-11-28 04:07:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:41,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:07:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:41,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:07:41,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:07:41,581 INFO L87 Difference]: Start difference. First operand 553 states and 894 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:41,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:41,906 INFO L93 Difference]: Finished difference Result 1073 states and 1737 transitions. [2024-11-28 04:07:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:41,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2024-11-28 04:07:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:41,915 INFO L225 Difference]: With dead ends: 1073 [2024-11-28 04:07:41,916 INFO L226 Difference]: Without dead ends: 571 [2024-11-28 04:07:41,919 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 [2024-11-28 04:07:41,920 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 56 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:41,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4108 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:07:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-28 04:07:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 553. [2024-11-28 04:07:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 429 states have (on average 1.6247086247086246) internal successors, (697), 446 states have internal predecessors, (697), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 890 transitions. [2024-11-28 04:07:41,954 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 890 transitions. Word has length 70 [2024-11-28 04:07:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:41,955 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 890 transitions. [2024-11-28 04:07:41,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 890 transitions. [2024-11-28 04:07:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 04:07:41,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:41,957 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:41,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:07:41,957 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:41,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1518155639, now seen corresponding path program 1 times [2024-11-28 04:07:41,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:41,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057842152] [2024-11-28 04:07:41,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:42,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057842152] [2024-11-28 04:07:42,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057842152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:42,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:42,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:07:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937847038] [2024-11-28 04:07:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:42,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:07:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:42,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:07:42,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:07:42,153 INFO L87 Difference]: Start difference. First operand 553 states and 890 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:42,496 INFO L93 Difference]: Finished difference Result 1073 states and 1733 transitions. [2024-11-28 04:07:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-28 04:07:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:42,509 INFO L225 Difference]: With dead ends: 1073 [2024-11-28 04:07:42,509 INFO L226 Difference]: Without dead ends: 571 [2024-11-28 04:07:42,512 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 [2024-11-28 04:07:42,512 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 55 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:42,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4103 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:07:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-28 04:07:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 553. [2024-11-28 04:07:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 429 states have (on average 1.6153846153846154) internal successors, (693), 446 states have internal predecessors, (693), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 886 transitions. [2024-11-28 04:07:42,549 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 886 transitions. Word has length 71 [2024-11-28 04:07:42,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:42,550 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 886 transitions. [2024-11-28 04:07:42,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 886 transitions. [2024-11-28 04:07:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 04:07:42,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:42,552 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:42,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:07:42,553 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:42,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1695939319, now seen corresponding path program 1 times [2024-11-28 04:07:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:42,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111626066] [2024-11-28 04:07:42,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111626066] [2024-11-28 04:07:42,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111626066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:42,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:42,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:07:42,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401923833] [2024-11-28 04:07:42,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:42,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:07:42,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:42,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:07:42,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:07:42,769 INFO L87 Difference]: Start difference. First operand 553 states and 886 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:42,913 INFO L93 Difference]: Finished difference Result 1064 states and 1715 transitions. [2024-11-28 04:07:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:07:42,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2024-11-28 04:07:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:42,921 INFO L225 Difference]: With dead ends: 1064 [2024-11-28 04:07:42,921 INFO L226 Difference]: Without dead ends: 541 [2024-11-28 04:07:42,924 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 [2024-11-28 04:07:42,925 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 94 mSDsluCounter, 4184 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5040 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 [2024-11-28 04:07:42,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5040 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:07:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-28 04:07:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 532. [2024-11-28 04:07:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 408 states have (on average 1.607843137254902) internal successors, (656), 425 states have internal predecessors, (656), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 849 transitions. [2024-11-28 04:07:42,957 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 849 transitions. Word has length 71 [2024-11-28 04:07:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:42,957 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 849 transitions. [2024-11-28 04:07:42,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 849 transitions. [2024-11-28 04:07:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:07:42,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:42,959 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:42,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:07:42,959 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:42,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:42,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1488032303, now seen corresponding path program 1 times [2024-11-28 04:07:42,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:42,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473145025] [2024-11-28 04:07:42,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:42,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:43,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473145025] [2024-11-28 04:07:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473145025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:43,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:43,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:07:43,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051651195] [2024-11-28 04:07:43,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:43,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:07:43,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:43,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:07:43,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:07:43,122 INFO L87 Difference]: Start difference. First operand 532 states and 849 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:43,295 INFO L93 Difference]: Finished difference Result 1043 states and 1678 transitions. [2024-11-28 04:07:43,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:43,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-28 04:07:43,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:43,303 INFO L225 Difference]: With dead ends: 1043 [2024-11-28 04:07:43,303 INFO L226 Difference]: Without dead ends: 541 [2024-11-28 04:07:43,306 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 [2024-11-28 04:07:43,307 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 39 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4108 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 [2024-11-28 04:07:43,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4108 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:07:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-28 04:07:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 532. [2024-11-28 04:07:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 408 states have (on average 1.6053921568627452) internal successors, (655), 425 states have internal predecessors, (655), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 848 transitions. [2024-11-28 04:07:43,339 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 848 transitions. Word has length 72 [2024-11-28 04:07:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:43,339 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 848 transitions. [2024-11-28 04:07:43,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 848 transitions. [2024-11-28 04:07:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:07:43,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:43,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:43,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:07:43,342 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:43,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash -467976690, now seen corresponding path program 1 times [2024-11-28 04:07:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:43,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135972650] [2024-11-28 04:07:43,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:43,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:43,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135972650] [2024-11-28 04:07:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135972650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:43,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:07:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653340798] [2024-11-28 04:07:43,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:43,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:07:43,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:43,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:07:43,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:07:43,551 INFO L87 Difference]: Start difference. First operand 532 states and 848 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:43,731 INFO L93 Difference]: Finished difference Result 1043 states and 1677 transitions. [2024-11-28 04:07:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:43,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-28 04:07:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:43,739 INFO L225 Difference]: With dead ends: 1043 [2024-11-28 04:07:43,739 INFO L226 Difference]: Without dead ends: 541 [2024-11-28 04:07:43,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:07:43,746 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 38 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4108 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 [2024-11-28 04:07:43,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4108 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:07:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-28 04:07:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 532. [2024-11-28 04:07:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 408 states have (on average 1.6029411764705883) internal successors, (654), 425 states have internal predecessors, (654), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 847 transitions. [2024-11-28 04:07:43,780 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 847 transitions. Word has length 73 [2024-11-28 04:07:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:43,781 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 847 transitions. [2024-11-28 04:07:43,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:07:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 847 transitions. [2024-11-28 04:07:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:07:43,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:43,784 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:43,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:07:43,785 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:43,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1175208438, now seen corresponding path program 1 times [2024-11-28 04:07:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:43,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883373009] [2024-11-28 04:07:43,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:44,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:44,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883373009] [2024-11-28 04:07:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883373009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:44,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:44,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:07:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295375138] [2024-11-28 04:07:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:44,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:07:44,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:44,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:07:44,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:07:44,123 INFO L87 Difference]: Start difference. First operand 532 states and 847 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:44,400 INFO L93 Difference]: Finished difference Result 1033 states and 1659 transitions. [2024-11-28 04:07:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:07:44,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-11-28 04:07:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:44,407 INFO L225 Difference]: With dead ends: 1033 [2024-11-28 04:07:44,407 INFO L226 Difference]: Without dead ends: 537 [2024-11-28 04:07:44,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:07:44,411 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 21 mSDsluCounter, 6393 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7196 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:44,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7196 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:07:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-28 04:07:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 534. [2024-11-28 04:07:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 410 states have (on average 1.5975609756097562) internal successors, (655), 427 states have internal predecessors, (655), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:07:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 848 transitions. [2024-11-28 04:07:44,445 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 848 transitions. Word has length 74 [2024-11-28 04:07:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:44,445 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 848 transitions. [2024-11-28 04:07:44,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 848 transitions. [2024-11-28 04:07:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:07:44,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:44,449 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:44,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:07:44,449 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:44,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1852389475, now seen corresponding path program 1 times [2024-11-28 04:07:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:44,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91120234] [2024-11-28 04:07:44,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:44,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:07:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:44,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91120234] [2024-11-28 04:07:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91120234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:44,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:44,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:07:44,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787051114] [2024-11-28 04:07:44,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:44,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:07:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:44,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:07:44,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:44,719 INFO L87 Difference]: Start difference. First operand 534 states and 848 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:44,953 INFO L93 Difference]: Finished difference Result 1512 states and 2454 transitions. [2024-11-28 04:07:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:07:44,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-28 04:07:44,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:44,968 INFO L225 Difference]: With dead ends: 1512 [2024-11-28 04:07:44,968 INFO L226 Difference]: Without dead ends: 1021 [2024-11-28 04:07:44,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:44,973 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 797 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:44,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1690 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:07:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2024-11-28 04:07:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 958. [2024-11-28 04:07:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 742 states have (on average 1.6199460916442048) internal successors, (1202), 768 states have internal predecessors, (1202), 170 states have call successors, (170), 47 states have call predecessors, (170), 45 states have return successors, (175), 157 states have call predecessors, (175), 168 states have call successors, (175) [2024-11-28 04:07:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1547 transitions. [2024-11-28 04:07:45,075 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1547 transitions. Word has length 75 [2024-11-28 04:07:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:45,076 INFO L471 AbstractCegarLoop]: Abstraction has 958 states and 1547 transitions. [2024-11-28 04:07:45,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:07:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1547 transitions. [2024-11-28 04:07:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:07:45,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:45,083 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:45,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:07:45,084 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:45,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1354219791, now seen corresponding path program 1 times [2024-11-28 04:07:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:45,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093291675] [2024-11-28 04:07:45,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:45,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:07:45,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:45,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093291675] [2024-11-28 04:07:45,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093291675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996394959] [2024-11-28 04:07:45,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:45,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:45,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:45,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:45,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:07:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:45,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:07:45,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:07:45,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:45,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996394959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:45,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 04:07:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973860390] [2024-11-28 04:07:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:45,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:07:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:45,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:07:45,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:07:45,936 INFO L87 Difference]: Start difference. First operand 958 states and 1547 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:46,102 INFO L93 Difference]: Finished difference Result 2776 states and 4589 transitions. [2024-11-28 04:07:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:07:46,103 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-28 04:07:46,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:46,125 INFO L225 Difference]: With dead ends: 2776 [2024-11-28 04:07:46,125 INFO L226 Difference]: Without dead ends: 1862 [2024-11-28 04:07:46,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:07:46,133 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 829 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:46,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1626 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2024-11-28 04:07:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1850. [2024-11-28 04:07:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1435 states have (on average 1.6313588850174217) internal successors, (2341), 1484 states have internal predecessors, (2341), 327 states have call successors, (327), 89 states have call predecessors, (327), 87 states have return successors, (366), 306 states have call predecessors, (366), 323 states have call successors, (366) [2024-11-28 04:07:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 3034 transitions. [2024-11-28 04:07:46,278 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 3034 transitions. Word has length 128 [2024-11-28 04:07:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:46,279 INFO L471 AbstractCegarLoop]: Abstraction has 1850 states and 3034 transitions. [2024-11-28 04:07:46,280 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 3034 transitions. [2024-11-28 04:07:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 04:07:46,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:46,286 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:46,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:07:46,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:07:46,490 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:46,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash -382971482, now seen corresponding path program 1 times [2024-11-28 04:07:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966109425] [2024-11-28 04:07:46,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 04:07:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966109425] [2024-11-28 04:07:46,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966109425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982539534] [2024-11-28 04:07:46,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:46,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:46,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:46,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:07:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:47,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:07:47,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:07:47,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:47,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982539534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:47,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:47,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-28 04:07:47,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627537287] [2024-11-28 04:07:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:47,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:07:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:47,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:07:47,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:07:47,735 INFO L87 Difference]: Start difference. First operand 1850 states and 3034 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:07:48,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:48,701 INFO L93 Difference]: Finished difference Result 4697 states and 7740 transitions. [2024-11-28 04:07:48,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:48,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2024-11-28 04:07:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:48,734 INFO L225 Difference]: With dead ends: 4697 [2024-11-28 04:07:48,734 INFO L226 Difference]: Without dead ends: 2890 [2024-11-28 04:07:48,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:07:48,750 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 783 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 4370 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:48,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 4370 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:07:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2024-11-28 04:07:49,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2024-11-28 04:07:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2239 states have (on average 1.5984814649397052) internal successors, (3579), 2292 states have internal predecessors, (3579), 501 states have call successors, (501), 151 states have call predecessors, (501), 147 states have return successors, (632), 476 states have call predecessors, (632), 493 states have call successors, (632) [2024-11-28 04:07:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4712 transitions. [2024-11-28 04:07:49,061 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4712 transitions. Word has length 127 [2024-11-28 04:07:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:49,061 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 4712 transitions. [2024-11-28 04:07:49,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:07:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4712 transitions. [2024-11-28 04:07:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:07:49,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:49,069 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:49,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:07:49,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:07:49,273 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:49,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1195250319, now seen corresponding path program 1 times [2024-11-28 04:07:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:49,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513627730] [2024-11-28 04:07:49,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:07:49,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:49,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513627730] [2024-11-28 04:07:49,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513627730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:49,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797333625] [2024-11-28 04:07:49,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:49,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:49,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:49,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:49,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:07:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:50,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:07:50,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:07:50,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:50,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797333625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:50,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:50,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 04:07:50,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284815699] [2024-11-28 04:07:50,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:50,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:07:50,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:50,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:07:50,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:07:50,219 INFO L87 Difference]: Start difference. First operand 2888 states and 4712 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:51,453 INFO L93 Difference]: Finished difference Result 5797 states and 9787 transitions. [2024-11-28 04:07:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-28 04:07:51,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:51,490 INFO L225 Difference]: With dead ends: 5797 [2024-11-28 04:07:51,491 INFO L226 Difference]: Without dead ends: 2952 [2024-11-28 04:07:51,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:07:51,521 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 777 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:51,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 2047 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:07:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2024-11-28 04:07:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2024-11-28 04:07:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2295 states have (on average 1.6013071895424837) internal successors, (3675), 2348 states have internal predecessors, (3675), 501 states have call successors, (501), 159 states have call predecessors, (501), 155 states have return successors, (640), 476 states have call predecessors, (640), 493 states have call successors, (640) [2024-11-28 04:07:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 4816 transitions. [2024-11-28 04:07:51,801 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 4816 transitions. Word has length 128 [2024-11-28 04:07:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:51,801 INFO L471 AbstractCegarLoop]: Abstraction has 2952 states and 4816 transitions. [2024-11-28 04:07:51,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 4816 transitions. [2024-11-28 04:07:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:07:51,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:51,809 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:51,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:07:52,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:07:52,015 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:52,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1074752311, now seen corresponding path program 1 times [2024-11-28 04:07:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294680372] [2024-11-28 04:07:52,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:07:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294680372] [2024-11-28 04:07:52,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294680372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580808290] [2024-11-28 04:07:52,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:52,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:52,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:52,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:52,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:07:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:52,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:07:52,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:07:52,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580808290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:52,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:52,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 04:07:52,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883428759] [2024-11-28 04:07:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:52,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:07:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:52,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:07:52,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:07:52,989 INFO L87 Difference]: Start difference. First operand 2952 states and 4816 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:54,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:54,306 INFO L93 Difference]: Finished difference Result 5925 states and 9971 transitions. [2024-11-28 04:07:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:54,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2024-11-28 04:07:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:54,344 INFO L225 Difference]: With dead ends: 5925 [2024-11-28 04:07:54,344 INFO L226 Difference]: Without dead ends: 3016 [2024-11-28 04:07:54,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:07:54,371 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 771 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:54,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2044 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:07:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2024-11-28 04:07:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2024-11-28 04:07:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2351 states have (on average 1.603998298596342) internal successors, (3771), 2404 states have internal predecessors, (3771), 501 states have call successors, (501), 167 states have call predecessors, (501), 163 states have return successors, (648), 476 states have call predecessors, (648), 493 states have call successors, (648) [2024-11-28 04:07:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 4920 transitions. [2024-11-28 04:07:54,624 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 4920 transitions. Word has length 131 [2024-11-28 04:07:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:54,624 INFO L471 AbstractCegarLoop]: Abstraction has 3016 states and 4920 transitions. [2024-11-28 04:07:54,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 4920 transitions. [2024-11-28 04:07:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 04:07:54,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:54,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:54,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:07:54,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:54,836 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:54,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:54,838 INFO L85 PathProgramCache]: Analyzing trace with hash -404339859, now seen corresponding path program 1 times [2024-11-28 04:07:54,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:54,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766848215] [2024-11-28 04:07:54,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 04:07:55,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766848215] [2024-11-28 04:07:55,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766848215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756512648] [2024-11-28 04:07:55,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:55,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:55,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:55,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:55,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:07:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:55,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:07:55,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:07:55,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:55,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756512648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:55,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:55,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 04:07:55,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574059715] [2024-11-28 04:07:55,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:55,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:07:55,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:55,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:07:55,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:07:55,714 INFO L87 Difference]: Start difference. First operand 3016 states and 4920 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:56,673 INFO L93 Difference]: Finished difference Result 6053 states and 10155 transitions. [2024-11-28 04:07:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2024-11-28 04:07:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:56,706 INFO L225 Difference]: With dead ends: 6053 [2024-11-28 04:07:56,706 INFO L226 Difference]: Without dead ends: 3080 [2024-11-28 04:07:56,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:07:56,726 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 772 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:56,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 2041 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:07:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2024-11-28 04:07:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 3080. [2024-11-28 04:07:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 2407 states have (on average 1.6065641877856252) internal successors, (3867), 2460 states have internal predecessors, (3867), 501 states have call successors, (501), 175 states have call predecessors, (501), 171 states have return successors, (656), 476 states have call predecessors, (656), 493 states have call successors, (656) [2024-11-28 04:07:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 5024 transitions. [2024-11-28 04:07:56,949 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 5024 transitions. Word has length 134 [2024-11-28 04:07:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:56,949 INFO L471 AbstractCegarLoop]: Abstraction has 3080 states and 5024 transitions. [2024-11-28 04:07:56,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 5024 transitions. [2024-11-28 04:07:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 04:07:56,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:56,957 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:56,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:07:57,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:57,162 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:57,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1820212291, now seen corresponding path program 1 times [2024-11-28 04:07:57,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:57,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082070840] [2024-11-28 04:07:57,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:07:57,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:57,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082070840] [2024-11-28 04:07:57,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082070840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:57,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567142184] [2024-11-28 04:07:57,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:57,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:57,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:57,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:57,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:07:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:57,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:07:57,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:07:58,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:07:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567142184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:58,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:07:58,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 04:07:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625411663] [2024-11-28 04:07:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:58,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:07:58,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:58,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:07:58,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:07:58,055 INFO L87 Difference]: Start difference. First operand 3080 states and 5024 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:59,062 INFO L93 Difference]: Finished difference Result 6181 states and 10339 transitions. [2024-11-28 04:07:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:07:59,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2024-11-28 04:07:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:59,116 INFO L225 Difference]: With dead ends: 6181 [2024-11-28 04:07:59,117 INFO L226 Difference]: Without dead ends: 3144 [2024-11-28 04:07:59,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:07:59,140 INFO L435 NwaCegarLoop]: 800 mSDtfsCounter, 766 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:59,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2038 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:07:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2024-11-28 04:07:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3144. [2024-11-28 04:07:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 2463 states have (on average 1.6090133982947625) internal successors, (3963), 2516 states have internal predecessors, (3963), 501 states have call successors, (501), 183 states have call predecessors, (501), 179 states have return successors, (664), 476 states have call predecessors, (664), 493 states have call successors, (664) [2024-11-28 04:07:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 5128 transitions. [2024-11-28 04:07:59,369 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 5128 transitions. Word has length 137 [2024-11-28 04:07:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:59,369 INFO L471 AbstractCegarLoop]: Abstraction has 3144 states and 5128 transitions. [2024-11-28 04:07:59,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:07:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 5128 transitions. [2024-11-28 04:07:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 04:07:59,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:59,377 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:59,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:07:59,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:59,578 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:59,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1860801687, now seen corresponding path program 1 times [2024-11-28 04:07:59,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936077124] [2024-11-28 04:07:59,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:08:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936077124] [2024-11-28 04:08:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936077124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659092525] [2024-11-28 04:08:00,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:00,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:00,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:00,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:00,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:08:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:00,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:08:00,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:08:00,844 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659092525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:00,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:00,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-28 04:08:00,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207485874] [2024-11-28 04:08:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:00,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:08:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:00,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:08:00,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:08:00,847 INFO L87 Difference]: Start difference. First operand 3144 states and 5128 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 04:08:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:04,001 INFO L93 Difference]: Finished difference Result 6501 states and 10621 transitions. [2024-11-28 04:08:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:08:04,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 140 [2024-11-28 04:08:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:04,060 INFO L225 Difference]: With dead ends: 6501 [2024-11-28 04:08:04,060 INFO L226 Difference]: Without dead ends: 3405 [2024-11-28 04:08:04,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:08:04,080 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 1993 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:04,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 868 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:08:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2024-11-28 04:08:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3143. [2024-11-28 04:08:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 2357 states have (on average 1.5685193042002545) internal successors, (3697), 2448 states have internal predecessors, (3697), 606 states have call successors, (606), 169 states have call predecessors, (606), 179 states have return successors, (746), 577 states have call predecessors, (746), 598 states have call successors, (746) [2024-11-28 04:08:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5049 transitions. [2024-11-28 04:08:04,328 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5049 transitions. Word has length 140 [2024-11-28 04:08:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:04,328 INFO L471 AbstractCegarLoop]: Abstraction has 3143 states and 5049 transitions. [2024-11-28 04:08:04,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 04:08:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5049 transitions. [2024-11-28 04:08:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 04:08:04,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:04,335 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:04,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:08:04,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:08:04,540 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:04,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1128834261, now seen corresponding path program 1 times [2024-11-28 04:08:04,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:04,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437044615] [2024-11-28 04:08:04,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:04,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:08:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437044615] [2024-11-28 04:08:05,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437044615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775234259] [2024-11-28 04:08:05,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:05,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:05,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:05,079 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:05,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:08:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:05,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:08:05,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:08:05,809 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775234259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:05,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-28 04:08:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278335961] [2024-11-28 04:08:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:05,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:08:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:05,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:08:05,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:08:05,812 INFO L87 Difference]: Start difference. First operand 3143 states and 5049 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-28 04:08:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:11,567 INFO L93 Difference]: Finished difference Result 7335 states and 11863 transitions. [2024-11-28 04:08:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:08:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 140 [2024-11-28 04:08:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:11,606 INFO L225 Difference]: With dead ends: 7335 [2024-11-28 04:08:11,607 INFO L226 Difference]: Without dead ends: 4237 [2024-11-28 04:08:11,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:08:11,628 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 2219 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 4948 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 5471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 4948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:11,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 2525 Invalid, 5471 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [523 Valid, 4948 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 04:08:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2024-11-28 04:08:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 3669. [2024-11-28 04:08:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 2749 states have (on average 1.5674790833030192) internal successors, (4309), 2862 states have internal predecessors, (4309), 696 states have call successors, (696), 191 states have call predecessors, (696), 223 states have return successors, (891), 667 states have call predecessors, (891), 688 states have call successors, (891) [2024-11-28 04:08:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5896 transitions. [2024-11-28 04:08:11,945 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5896 transitions. Word has length 140 [2024-11-28 04:08:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:11,946 INFO L471 AbstractCegarLoop]: Abstraction has 3669 states and 5896 transitions. [2024-11-28 04:08:11,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-28 04:08:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5896 transitions. [2024-11-28 04:08:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 04:08:11,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:11,953 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:11,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:12,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:08:12,158 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:12,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash 502657771, now seen corresponding path program 1 times [2024-11-28 04:08:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:12,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555949560] [2024-11-28 04:08:12,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 04:08:12,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:12,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555949560] [2024-11-28 04:08:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555949560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312760793] [2024-11-28 04:08:12,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:12,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:12,614 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:12,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:08:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:13,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:08:13,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:08:13,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312760793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:13,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:13,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-28 04:08:13,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95093649] [2024-11-28 04:08:13,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:13,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:08:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:13,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:08:13,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:08:13,243 INFO L87 Difference]: Start difference. First operand 3669 states and 5896 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 04:08:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:19,209 INFO L93 Difference]: Finished difference Result 10024 states and 16428 transitions. [2024-11-28 04:08:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:08:19,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 142 [2024-11-28 04:08:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:19,264 INFO L225 Difference]: With dead ends: 10024 [2024-11-28 04:08:19,264 INFO L226 Difference]: Without dead ends: 6400 [2024-11-28 04:08:19,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:08:19,290 INFO L435 NwaCegarLoop]: 611 mSDtfsCounter, 2569 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 5787 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 6446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 5787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:19,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2670 Valid, 2297 Invalid, 6446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [659 Valid, 5787 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-28 04:08:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2024-11-28 04:08:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 5790. [2024-11-28 04:08:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5790 states, 4341 states have (on average 1.5657682561621746) internal successors, (6797), 4527 states have internal predecessors, (6797), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 364 states have return successors, (1508), 1048 states have call predecessors, (1508), 1076 states have call successors, (1508) [2024-11-28 04:08:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 9389 transitions. [2024-11-28 04:08:19,947 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 9389 transitions. Word has length 142 [2024-11-28 04:08:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:19,948 INFO L471 AbstractCegarLoop]: Abstraction has 5790 states and 9389 transitions. [2024-11-28 04:08:19,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 04:08:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 9389 transitions. [2024-11-28 04:08:19,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:08:19,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:19,957 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:19,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:20,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:20,161 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:20,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash 525016155, now seen corresponding path program 1 times [2024-11-28 04:08:20,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:20,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715449110] [2024-11-28 04:08:20,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:20,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 04:08:20,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:20,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715449110] [2024-11-28 04:08:20,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715449110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:20,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172799026] [2024-11-28 04:08:20,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:20,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:20,586 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:20,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:08:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:21,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:08:21,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:08:21,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:21,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172799026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:21,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:21,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-28 04:08:21,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257306561] [2024-11-28 04:08:21,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:21,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:08:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:21,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:08:21,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:08:21,132 INFO L87 Difference]: Start difference. First operand 5790 states and 9389 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:08:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:21,542 INFO L93 Difference]: Finished difference Result 13673 states and 22459 transitions. [2024-11-28 04:08:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:08:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-28 04:08:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:21,621 INFO L225 Difference]: With dead ends: 13673 [2024-11-28 04:08:21,621 INFO L226 Difference]: Without dead ends: 7932 [2024-11-28 04:08:21,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:08:21,657 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 791 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:21,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2353 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:08:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2024-11-28 04:08:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 5778. [2024-11-28 04:08:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5778 states, 4333 states have (on average 1.5649665358873759) internal successors, (6781), 4515 states have internal predecessors, (6781), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 360 states have return successors, (1472), 1048 states have call predecessors, (1472), 1076 states have call successors, (1472) [2024-11-28 04:08:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 9337 transitions. [2024-11-28 04:08:22,281 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 9337 transitions. Word has length 147 [2024-11-28 04:08:22,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:22,281 INFO L471 AbstractCegarLoop]: Abstraction has 5778 states and 9337 transitions. [2024-11-28 04:08:22,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:08:22,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 9337 transitions. [2024-11-28 04:08:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:08:22,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:22,288 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:22,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:08:22,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:22,489 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:22,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1184547677, now seen corresponding path program 1 times [2024-11-28 04:08:22,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:22,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356910530] [2024-11-28 04:08:22,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 04:08:22,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:22,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356910530] [2024-11-28 04:08:22,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356910530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:22,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403748202] [2024-11-28 04:08:22,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:22,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:22,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:22,927 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:22,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:08:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:23,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:08:23,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:08:23,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403748202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:23,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:23,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-28 04:08:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683067870] [2024-11-28 04:08:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:23,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:08:23,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:23,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:08:23,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:08:23,563 INFO L87 Difference]: Start difference. First operand 5778 states and 9337 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:08:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:24,093 INFO L93 Difference]: Finished difference Result 5780 states and 9338 transitions. [2024-11-28 04:08:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:08:24,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-28 04:08:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:24,148 INFO L225 Difference]: With dead ends: 5780 [2024-11-28 04:08:24,148 INFO L226 Difference]: Without dead ends: 5778 [2024-11-28 04:08:24,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:08:24,156 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 353 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:24,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 4166 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:08:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5778 states. [2024-11-28 04:08:24,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5778 to 5778. [2024-11-28 04:08:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5778 states, 4333 states have (on average 1.5582737133625664) internal successors, (6752), 4515 states have internal predecessors, (6752), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 360 states have return successors, (1472), 1048 states have call predecessors, (1472), 1076 states have call successors, (1472) [2024-11-28 04:08:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 9308 transitions. [2024-11-28 04:08:24,671 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 9308 transitions. Word has length 147 [2024-11-28 04:08:24,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:24,672 INFO L471 AbstractCegarLoop]: Abstraction has 5778 states and 9308 transitions. [2024-11-28 04:08:24,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:08:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 9308 transitions. [2024-11-28 04:08:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 04:08:24,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:24,683 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:24,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:08:24,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:24,884 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:24,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1191897996, now seen corresponding path program 1 times [2024-11-28 04:08:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517741503] [2024-11-28 04:08:24,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:24,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-28 04:08:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517741503] [2024-11-28 04:08:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517741503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806916413] [2024-11-28 04:08:25,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:25,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:25,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:25,516 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:25,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:08:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:26,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:26,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 04:08:26,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:26,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806916413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:26,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:26,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:08:26,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983209544] [2024-11-28 04:08:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:26,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:26,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:26,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:08:26,147 INFO L87 Difference]: Start difference. First operand 5778 states and 9308 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:27,007 INFO L93 Difference]: Finished difference Result 11781 states and 19226 transitions. [2024-11-28 04:08:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:27,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2024-11-28 04:08:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:27,061 INFO L225 Difference]: With dead ends: 11781 [2024-11-28 04:08:27,062 INFO L226 Difference]: Without dead ends: 6048 [2024-11-28 04:08:27,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:27,094 INFO L435 NwaCegarLoop]: 767 mSDtfsCounter, 144 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2278 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 [2024-11-28 04:08:27,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2278 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:08:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2024-11-28 04:08:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 6012. [2024-11-28 04:08:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 4561 states have (on average 1.5764086823065118) internal successors, (7190), 4743 states have internal predecessors, (7190), 1084 states have call successors, (1084), 297 states have call predecessors, (1084), 366 states have return successors, (1472), 1048 states have call predecessors, (1472), 1076 states have call successors, (1472) [2024-11-28 04:08:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9746 transitions. [2024-11-28 04:08:27,603 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 9746 transitions. Word has length 170 [2024-11-28 04:08:27,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:27,605 INFO L471 AbstractCegarLoop]: Abstraction has 6012 states and 9746 transitions. [2024-11-28 04:08:27,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 9746 transitions. [2024-11-28 04:08:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 04:08:27,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:27,614 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:27,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:27,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:27,818 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:27,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash 321682460, now seen corresponding path program 1 times [2024-11-28 04:08:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:27,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729066952] [2024-11-28 04:08:27,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 04:08:28,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729066952] [2024-11-28 04:08:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729066952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876347231] [2024-11-28 04:08:28,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:28,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:28,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:28,229 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:28,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:08:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:28,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:28,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:08:28,713 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:28,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876347231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:28,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:08:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672258441] [2024-11-28 04:08:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:28,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:28,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:28,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:28,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:08:28,717 INFO L87 Difference]: Start difference. First operand 6012 states and 9746 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:29,385 INFO L93 Difference]: Finished difference Result 12267 states and 20102 transitions. [2024-11-28 04:08:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:29,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2024-11-28 04:08:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:29,447 INFO L225 Difference]: With dead ends: 12267 [2024-11-28 04:08:29,447 INFO L226 Difference]: Without dead ends: 6300 [2024-11-28 04:08:29,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:29,483 INFO L435 NwaCegarLoop]: 766 mSDtfsCounter, 142 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2275 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 [2024-11-28 04:08:29,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2275 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:08:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2024-11-28 04:08:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 6246. [2024-11-28 04:08:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 4789 states have (on average 1.5928168719983296) internal successors, (7628), 4971 states have internal predecessors, (7628), 1084 states have call successors, (1084), 303 states have call predecessors, (1084), 372 states have return successors, (1472), 1048 states have call predecessors, (1472), 1076 states have call successors, (1472) [2024-11-28 04:08:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 10184 transitions. [2024-11-28 04:08:30,018 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 10184 transitions. Word has length 175 [2024-11-28 04:08:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:30,020 INFO L471 AbstractCegarLoop]: Abstraction has 6246 states and 10184 transitions. [2024-11-28 04:08:30,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 10184 transitions. [2024-11-28 04:08:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-28 04:08:30,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:30,030 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:30,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:30,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:08:30,231 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:30,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1619145420, now seen corresponding path program 1 times [2024-11-28 04:08:30,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:30,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433035549] [2024-11-28 04:08:30,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:30,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:08:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:30,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433035549] [2024-11-28 04:08:30,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433035549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:30,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030537687] [2024-11-28 04:08:30,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:30,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:30,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:30,697 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:30,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:08:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:31,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:31,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:08:31,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:31,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030537687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:31,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:31,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:08:31,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699758252] [2024-11-28 04:08:31,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:31,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:31,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:31,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:08:31,242 INFO L87 Difference]: Start difference. First operand 6246 states and 10184 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:31,760 INFO L93 Difference]: Finished difference Result 12753 states and 20978 transitions. [2024-11-28 04:08:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:31,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2024-11-28 04:08:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:31,819 INFO L225 Difference]: With dead ends: 12753 [2024-11-28 04:08:31,820 INFO L226 Difference]: Without dead ends: 6552 [2024-11-28 04:08:31,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:31,855 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 140 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2272 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 [2024-11-28 04:08:31,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2272 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:08:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6552 states. [2024-11-28 04:08:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6552 to 6480. [2024-11-28 04:08:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6480 states, 5017 states have (on average 1.6077337054016345) internal successors, (8066), 5199 states have internal predecessors, (8066), 1084 states have call successors, (1084), 309 states have call predecessors, (1084), 378 states have return successors, (1472), 1048 states have call predecessors, (1472), 1076 states have call successors, (1472) [2024-11-28 04:08:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 10622 transitions. [2024-11-28 04:08:32,386 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 10622 transitions. Word has length 179 [2024-11-28 04:08:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:32,386 INFO L471 AbstractCegarLoop]: Abstraction has 6480 states and 10622 transitions. [2024-11-28 04:08:32,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 10622 transitions. [2024-11-28 04:08:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-28 04:08:32,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:32,394 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:32,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:08:32,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:08:32,595 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:32,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash -260431276, now seen corresponding path program 1 times [2024-11-28 04:08:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:32,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432337741] [2024-11-28 04:08:32,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-28 04:08:33,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432337741] [2024-11-28 04:08:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432337741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099530457] [2024-11-28 04:08:33,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:33,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:33,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:33,059 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:33,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:08:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:33,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:33,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 04:08:33,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099530457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:33,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:08:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092444411] [2024-11-28 04:08:33,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:33,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:33,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:33,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:08:33,617 INFO L87 Difference]: Start difference. First operand 6480 states and 10622 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:34,354 INFO L93 Difference]: Finished difference Result 13239 states and 21854 transitions. [2024-11-28 04:08:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2024-11-28 04:08:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:34,413 INFO L225 Difference]: With dead ends: 13239 [2024-11-28 04:08:34,413 INFO L226 Difference]: Without dead ends: 6804 [2024-11-28 04:08:34,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:34,454 INFO L435 NwaCegarLoop]: 764 mSDtfsCounter, 138 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:34,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2269 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:08:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6804 states. [2024-11-28 04:08:35,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6804 to 6714. [2024-11-28 04:08:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 5245 states have (on average 1.621353670162059) internal successors, (8504), 5427 states have internal predecessors, (8504), 1084 states have call successors, (1084), 315 states have call predecessors, (1084), 384 states have return successors, (1472), 1048 states have call predecessors, (1472), 1076 states have call successors, (1472) [2024-11-28 04:08:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 11060 transitions. [2024-11-28 04:08:35,192 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 11060 transitions. Word has length 182 [2024-11-28 04:08:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:35,193 INFO L471 AbstractCegarLoop]: Abstraction has 6714 states and 11060 transitions. [2024-11-28 04:08:35,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 11060 transitions. [2024-11-28 04:08:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-28 04:08:35,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:35,202 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:35,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:08:35,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:35,403 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:35,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1593545884, now seen corresponding path program 1 times [2024-11-28 04:08:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273731867] [2024-11-28 04:08:35,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-28 04:08:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273731867] [2024-11-28 04:08:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273731867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404930510] [2024-11-28 04:08:36,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:36,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:36,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:36,029 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:36,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:08:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:36,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:36,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:08:36,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:36,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404930510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:36,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:08:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75732728] [2024-11-28 04:08:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:36,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:36,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:36,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:08:36,545 INFO L87 Difference]: Start difference. First operand 6714 states and 11060 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:37,081 INFO L93 Difference]: Finished difference Result 13725 states and 22730 transitions. [2024-11-28 04:08:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 184 [2024-11-28 04:08:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:37,133 INFO L225 Difference]: With dead ends: 13725 [2024-11-28 04:08:37,133 INFO L226 Difference]: Without dead ends: 7056 [2024-11-28 04:08:37,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:37,168 INFO L435 NwaCegarLoop]: 762 mSDtfsCounter, 136 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2262 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 [2024-11-28 04:08:37,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2262 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:08:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2024-11-28 04:08:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 6948. [2024-11-28 04:08:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6948 states, 5473 states have (on average 1.6338388452402703) internal successors, (8942), 5655 states have internal predecessors, (8942), 1084 states have call successors, (1084), 321 states have call predecessors, (1084), 390 states have return successors, (1472), 1048 states have call predecessors, (1472), 1076 states have call successors, (1472) [2024-11-28 04:08:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6948 states to 6948 states and 11498 transitions. [2024-11-28 04:08:37,775 INFO L78 Accepts]: Start accepts. Automaton has 6948 states and 11498 transitions. Word has length 184 [2024-11-28 04:08:37,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:37,776 INFO L471 AbstractCegarLoop]: Abstraction has 6948 states and 11498 transitions. [2024-11-28 04:08:37,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:08:37,776 INFO L276 IsEmpty]: Start isEmpty. Operand 6948 states and 11498 transitions. [2024-11-28 04:08:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-28 04:08:37,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:37,783 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:37,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:08:37,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:08:37,985 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:37,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1388570349, now seen corresponding path program 1 times [2024-11-28 04:08:37,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:37,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543256996] [2024-11-28 04:08:37,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 04:08:38,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543256996] [2024-11-28 04:08:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543256996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308326170] [2024-11-28 04:08:38,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:38,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:38,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:38,429 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:38,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:08:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:38,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 04:08:38,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:08:39,237 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308326170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:39,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2024-11-28 04:08:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849351312] [2024-11-28 04:08:39,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:39,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:08:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:39,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:08:39,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:08:39,239 INFO L87 Difference]: Start difference. First operand 6948 states and 11498 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 04:08:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:43,399 INFO L93 Difference]: Finished difference Result 21604 states and 36318 transitions. [2024-11-28 04:08:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:08:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 184 [2024-11-28 04:08:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:43,493 INFO L225 Difference]: With dead ends: 21604 [2024-11-28 04:08:43,493 INFO L226 Difference]: Without dead ends: 11344 [2024-11-28 04:08:43,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:08:43,686 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 1874 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 3767 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 4236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 3767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:43,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 2288 Invalid, 4236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 3767 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:08:43,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11344 states. [2024-11-28 04:08:44,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11344 to 11235. [2024-11-28 04:08:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11235 states, 8745 states have (on average 1.630188679245283) internal successors, (14256), 9100 states have internal predecessors, (14256), 1815 states have call successors, (1815), 507 states have call predecessors, (1815), 674 states have return successors, (2537), 1776 states have call predecessors, (2537), 1807 states have call successors, (2537) [2024-11-28 04:08:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11235 states to 11235 states and 18608 transitions. [2024-11-28 04:08:44,980 INFO L78 Accepts]: Start accepts. Automaton has 11235 states and 18608 transitions. Word has length 184 [2024-11-28 04:08:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:44,981 INFO L471 AbstractCegarLoop]: Abstraction has 11235 states and 18608 transitions. [2024-11-28 04:08:44,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 04:08:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11235 states and 18608 transitions. [2024-11-28 04:08:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 04:08:44,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:44,992 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:45,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:45,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:08:45,197 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:45,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1576775722, now seen corresponding path program 1 times [2024-11-28 04:08:45,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:45,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025011912] [2024-11-28 04:08:45,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:45,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 04:08:45,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025011912] [2024-11-28 04:08:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025011912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:45,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:08:45,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169125878] [2024-11-28 04:08:45,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:45,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:08:45,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:45,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:08:45,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:08:45,445 INFO L87 Difference]: Start difference. First operand 11235 states and 18608 transitions. Second operand has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 04:08:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:46,550 INFO L93 Difference]: Finished difference Result 22167 states and 36727 transitions. [2024-11-28 04:08:46,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:08:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 187 [2024-11-28 04:08:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:46,601 INFO L225 Difference]: With dead ends: 22167 [2024-11-28 04:08:46,602 INFO L226 Difference]: Without dead ends: 10617 [2024-11-28 04:08:46,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:08:46,640 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 30 mSDsluCounter, 4794 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5598 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:46,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5598 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2024-11-28 04:08:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10593. [2024-11-28 04:08:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10593 states, 8338 states have (on average 1.64319980810746) internal successors, (13701), 8668 states have internal predecessors, (13701), 1630 states have call successors, (1630), 483 states have call predecessors, (1630), 624 states have return successors, (2185), 1570 states have call predecessors, (2185), 1622 states have call successors, (2185) [2024-11-28 04:08:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10593 states to 10593 states and 17516 transitions. [2024-11-28 04:08:47,421 INFO L78 Accepts]: Start accepts. Automaton has 10593 states and 17516 transitions. Word has length 187 [2024-11-28 04:08:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:47,421 INFO L471 AbstractCegarLoop]: Abstraction has 10593 states and 17516 transitions. [2024-11-28 04:08:47,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 04:08:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10593 states and 17516 transitions. [2024-11-28 04:08:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-28 04:08:47,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:47,433 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:47,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 04:08:47,433 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:47,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 737010635, now seen corresponding path program 1 times [2024-11-28 04:08:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:47,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392923501] [2024-11-28 04:08:47,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-28 04:08:48,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392923501] [2024-11-28 04:08:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392923501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119466422] [2024-11-28 04:08:48,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:48,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:48,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:48,403 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:48,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:08:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:49,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:49,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2024-11-28 04:08:49,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119466422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:49,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:49,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:08:49,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912932790] [2024-11-28 04:08:49,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:49,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:49,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:49,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:49,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:08:49,401 INFO L87 Difference]: Start difference. First operand 10593 states and 17516 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 04:08:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:50,082 INFO L93 Difference]: Finished difference Result 21234 states and 35415 transitions. [2024-11-28 04:08:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:50,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 527 [2024-11-28 04:08:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:50,164 INFO L225 Difference]: With dead ends: 21234 [2024-11-28 04:08:50,164 INFO L226 Difference]: Without dead ends: 10683 [2024-11-28 04:08:50,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:50,218 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 22 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:50,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2397 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2024-11-28 04:08:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 10683. [2024-11-28 04:08:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 8418 states have (on average 1.6442147778569731) internal successors, (13841), 8748 states have internal predecessors, (13841), 1630 states have call successors, (1630), 493 states have call predecessors, (1630), 634 states have return successors, (2185), 1570 states have call predecessors, (2185), 1622 states have call successors, (2185) [2024-11-28 04:08:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 17656 transitions. [2024-11-28 04:08:51,232 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 17656 transitions. Word has length 527 [2024-11-28 04:08:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:51,233 INFO L471 AbstractCegarLoop]: Abstraction has 10683 states and 17656 transitions. [2024-11-28 04:08:51,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 04:08:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 17656 transitions. [2024-11-28 04:08:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-28 04:08:51,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:51,252 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:51,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:08:51,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:51,453 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:51,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:51,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1262926607, now seen corresponding path program 1 times [2024-11-28 04:08:51,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:51,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785976772] [2024-11-28 04:08:51,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:51,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-28 04:08:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785976772] [2024-11-28 04:08:52,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785976772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955745082] [2024-11-28 04:08:52,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:52,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:52,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:52,515 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:52,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:08:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:53,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 3994 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:08:53,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2024-11-28 04:08:53,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:53,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955745082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:53,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:53,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:08:53,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225651481] [2024-11-28 04:08:53,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:53,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:08:53,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:53,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:08:53,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:08:53,521 INFO L87 Difference]: Start difference. First operand 10683 states and 17656 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 04:08:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:54,158 INFO L93 Difference]: Finished difference Result 21414 states and 35655 transitions. [2024-11-28 04:08:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:08:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 528 [2024-11-28 04:08:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:54,235 INFO L225 Difference]: With dead ends: 21414 [2024-11-28 04:08:54,236 INFO L226 Difference]: Without dead ends: 10773 [2024-11-28 04:08:54,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:08:54,288 INFO L435 NwaCegarLoop]: 805 mSDtfsCounter, 20 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:54,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2391 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:08:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10773 states. [2024-11-28 04:08:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10773 to 10773. [2024-11-28 04:08:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10773 states, 8498 states have (on average 1.6452106377971287) internal successors, (13981), 8828 states have internal predecessors, (13981), 1630 states have call successors, (1630), 503 states have call predecessors, (1630), 644 states have return successors, (2185), 1570 states have call predecessors, (2185), 1622 states have call successors, (2185) [2024-11-28 04:08:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10773 states to 10773 states and 17796 transitions. [2024-11-28 04:08:55,257 INFO L78 Accepts]: Start accepts. Automaton has 10773 states and 17796 transitions. Word has length 528 [2024-11-28 04:08:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:55,258 INFO L471 AbstractCegarLoop]: Abstraction has 10773 states and 17796 transitions. [2024-11-28 04:08:55,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 04:08:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 10773 states and 17796 transitions. [2024-11-28 04:08:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-28 04:08:55,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:55,276 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:55,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:08:55,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 04:08:55,477 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:55,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 411359897, now seen corresponding path program 1 times [2024-11-28 04:08:55,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:55,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947541188] [2024-11-28 04:08:55,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:55,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-28 04:08:56,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947541188] [2024-11-28 04:08:56,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947541188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279435329] [2024-11-28 04:08:56,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:56,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:56,301 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:56,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:08:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:57,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 3995 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:08:57,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-11-28 04:08:58,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279435329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:58,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:58,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-28 04:08:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719274650] [2024-11-28 04:08:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:58,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:08:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:58,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:08:58,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:08:58,073 INFO L87 Difference]: Start difference. First operand 10773 states and 17796 transitions. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 8 states have internal predecessors, (226), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-28 04:09:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:05,189 INFO L93 Difference]: Finished difference Result 36196 states and 61278 transitions. [2024-11-28 04:09:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:09:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 8 states have internal predecessors, (226), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) Word has length 529 [2024-11-28 04:09:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:05,343 INFO L225 Difference]: With dead ends: 36196 [2024-11-28 04:09:05,343 INFO L226 Difference]: Without dead ends: 25448 [2024-11-28 04:09:05,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:09:05,411 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 2171 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 7088 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 7671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 7088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:05,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 2223 Invalid, 7671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [583 Valid, 7088 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 04:09:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25448 states. [2024-11-28 04:09:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25448 to 24743. [2024-11-28 04:09:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24743 states, 19711 states have (on average 1.6365988534320937) internal successors, (32259), 20398 states have internal predecessors, (32259), 3556 states have call successors, (3556), 1223 states have call predecessors, (3556), 1475 states have return successors, (5203), 3440 states have call predecessors, (5203), 3537 states have call successors, (5203) [2024-11-28 04:09:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24743 states to 24743 states and 41018 transitions. [2024-11-28 04:09:07,425 INFO L78 Accepts]: Start accepts. Automaton has 24743 states and 41018 transitions. Word has length 529 [2024-11-28 04:09:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:07,426 INFO L471 AbstractCegarLoop]: Abstraction has 24743 states and 41018 transitions. [2024-11-28 04:09:07,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 8 states have internal predecessors, (226), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-28 04:09:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 24743 states and 41018 transitions. [2024-11-28 04:09:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-28 04:09:07,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:07,443 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:07,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:09:07,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:09:07,643 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:07,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1161234759, now seen corresponding path program 1 times [2024-11-28 04:09:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:07,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202390199] [2024-11-28 04:09:07,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-28 04:09:08,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:08,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202390199] [2024-11-28 04:09:08,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202390199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:08,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121879118] [2024-11-28 04:09:08,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:08,512 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:08,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:09:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:09,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 3995 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:09:09,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2024-11-28 04:09:09,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:09:09,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121879118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:09,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:09:09,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:09:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653016578] [2024-11-28 04:09:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:09,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:09:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:09,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:09:09,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:09:09,502 INFO L87 Difference]: Start difference. First operand 24743 states and 41018 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 04:09:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:10,845 INFO L93 Difference]: Finished difference Result 49179 states and 82008 transitions. [2024-11-28 04:09:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 529 [2024-11-28 04:09:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:10,994 INFO L225 Difference]: With dead ends: 49179 [2024-11-28 04:09:10,994 INFO L226 Difference]: Without dead ends: 25026 [2024-11-28 04:09:11,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:09:11,256 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 18 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:11,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2385 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25026 states. [2024-11-28 04:09:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25026 to 24986. [2024-11-28 04:09:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24986 states, 19927 states have (on average 1.6378280724644954) internal successors, (32637), 20614 states have internal predecessors, (32637), 3556 states have call successors, (3556), 1250 states have call predecessors, (3556), 1502 states have return successors, (4999), 3440 states have call predecessors, (4999), 3537 states have call successors, (4999) [2024-11-28 04:09:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24986 states to 24986 states and 41192 transitions. [2024-11-28 04:09:13,421 INFO L78 Accepts]: Start accepts. Automaton has 24986 states and 41192 transitions. Word has length 529 [2024-11-28 04:09:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:13,422 INFO L471 AbstractCegarLoop]: Abstraction has 24986 states and 41192 transitions. [2024-11-28 04:09:13,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 04:09:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 24986 states and 41192 transitions. [2024-11-28 04:09:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-28 04:09:13,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:13,443 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:13,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 04:09:13,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:09:13,643 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:13,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1720055119, now seen corresponding path program 1 times [2024-11-28 04:09:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890645280] [2024-11-28 04:09:13,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-28 04:09:14,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:14,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890645280] [2024-11-28 04:09:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890645280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641614275] [2024-11-28 04:09:14,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:14,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:14,741 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:14,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:09:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:15,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 3994 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:09:15,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 682 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 04:09:15,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:09:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641614275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:15,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:09:15,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 04:09:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198869818] [2024-11-28 04:09:15,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:15,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:09:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:15,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:09:15,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:09:15,957 INFO L87 Difference]: Start difference. First operand 24986 states and 41192 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-28 04:09:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:17,502 INFO L93 Difference]: Finished difference Result 38903 states and 64463 transitions. [2024-11-28 04:09:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 528 [2024-11-28 04:09:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:17,628 INFO L225 Difference]: With dead ends: 38903 [2024-11-28 04:09:17,628 INFO L226 Difference]: Without dead ends: 25154 [2024-11-28 04:09:17,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:09:17,685 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 22 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:17,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2410 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25154 states. [2024-11-28 04:09:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25154 to 25154. [2024-11-28 04:09:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25154 states, 20067 states have (on average 1.6375143270045347) internal successors, (32860), 20754 states have internal predecessors, (32860), 3570 states have call successors, (3570), 1264 states have call predecessors, (3570), 1516 states have return successors, (5013), 3454 states have call predecessors, (5013), 3551 states have call successors, (5013) [2024-11-28 04:09:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25154 states to 25154 states and 41443 transitions. [2024-11-28 04:09:18,972 INFO L78 Accepts]: Start accepts. Automaton has 25154 states and 41443 transitions. Word has length 528 [2024-11-28 04:09:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:18,973 INFO L471 AbstractCegarLoop]: Abstraction has 25154 states and 41443 transitions. [2024-11-28 04:09:18,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 3 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-28 04:09:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 25154 states and 41443 transitions. [2024-11-28 04:09:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-28 04:09:18,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:18,993 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:19,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:09:19,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:09:19,194 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:19,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:19,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1100228989, now seen corresponding path program 1 times [2024-11-28 04:09:19,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063040301] [2024-11-28 04:09:19,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-28 04:09:20,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063040301] [2024-11-28 04:09:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063040301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072164730] [2024-11-28 04:09:20,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:20,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:20,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:20,012 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:09:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:20,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 3997 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:09:20,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-28 04:09:21,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:09:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072164730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:21,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:09:21,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-28 04:09:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584384225] [2024-11-28 04:09:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:21,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:09:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:21,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:09:21,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:09:21,620 INFO L87 Difference]: Start difference. First operand 25154 states and 41443 transitions. Second operand has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 8 states have internal predecessors, (227), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-28 04:09:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:30,269 INFO L93 Difference]: Finished difference Result 59191 states and 98763 transitions. [2024-11-28 04:09:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:09:30,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 8 states have internal predecessors, (227), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) Word has length 531 [2024-11-28 04:09:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:30,456 INFO L225 Difference]: With dead ends: 59191 [2024-11-28 04:09:30,456 INFO L226 Difference]: Without dead ends: 36809 [2024-11-28 04:09:30,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:09:30,545 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 2210 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 7245 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 7813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 7245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:30,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 2246 Invalid, 7813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [568 Valid, 7245 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 04:09:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36809 states. [2024-11-28 04:09:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36809 to 35693. [2024-11-28 04:09:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35693 states, 28472 states have (on average 1.6384518123068277) internal successors, (46650), 29426 states have internal predecessors, (46650), 5067 states have call successors, (5067), 1806 states have call predecessors, (5067), 2153 states have return successors, (7464), 4975 states have call predecessors, (7464), 5040 states have call successors, (7464) [2024-11-28 04:09:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35693 states to 35693 states and 59181 transitions. [2024-11-28 04:09:32,678 INFO L78 Accepts]: Start accepts. Automaton has 35693 states and 59181 transitions. Word has length 531 [2024-11-28 04:09:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:32,679 INFO L471 AbstractCegarLoop]: Abstraction has 35693 states and 59181 transitions. [2024-11-28 04:09:32,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 8 states have internal predecessors, (227), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2024-11-28 04:09:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 35693 states and 59181 transitions. [2024-11-28 04:09:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-28 04:09:32,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:32,700 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:32,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:09:32,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 04:09:32,900 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:32,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1909843985, now seen corresponding path program 1 times [2024-11-28 04:09:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:32,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106196199] [2024-11-28 04:09:32,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-11-28 04:09:33,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:33,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106196199] [2024-11-28 04:09:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106196199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:33,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197862763] [2024-11-28 04:09:33,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:33,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:33,603 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:33,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_718d3b04-6418-4e0c-9e32-a68815b7f964/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:09:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:34,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:09:34,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2024-11-28 04:09:34,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:09:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197862763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:34,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:09:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-28 04:09:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815254669] [2024-11-28 04:09:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:34,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:09:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:34,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:09:34,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:09:34,656 INFO L87 Difference]: Start difference. First operand 35693 states and 59181 transitions. Second operand has 7 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30)