./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product32.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_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1 --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 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:35:02,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:35:02,388 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:35:02,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:35:02,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:35:02,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:35:02,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:35:02,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:35:02,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:35:02,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:35:02,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:35:02,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:35:02,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:35:02,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:35:02,418 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:35:02,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:35:02,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:35:02,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:35:02,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:35:02,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:35:02,419 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:35:02,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:35:02,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:35:02,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:35:02,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:35:02,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:35:02,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:35:02,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:35:02,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:35:02,421 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_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1 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 -> 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b [2024-12-02 07:35:02,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:35:02,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:35:02,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:35:02,662 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:35:02,662 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:35:02,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2024-12-02 07:35:05,337 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/data/0b5e23c1c/6abfd7ff32f84e339f5b09a90148ebf6/FLAG440aca492 [2024-12-02 07:35:05,639 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:35:05,640 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2024-12-02 07:35:05,659 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/data/0b5e23c1c/6abfd7ff32f84e339f5b09a90148ebf6/FLAG440aca492 [2024-12-02 07:35:05,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/data/0b5e23c1c/6abfd7ff32f84e339f5b09a90148ebf6 [2024-12-02 07:35:05,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:35:05,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:35:05,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:35:05,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:35:05,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:35:05,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:35:05" (1/1) ... [2024-12-02 07:35:05,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a031a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:05, skipping insertion in model container [2024-12-02 07:35:05,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:35:05" (1/1) ... [2024-12-02 07:35:05,726 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:35:06,138 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_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2024-12-02 07:35:06,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:35:06,154 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:35:06,161 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-12-02 07:35:06,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2024-12-02 07:35:06,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [187] [2024-12-02 07:35:06,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [545] [2024-12-02 07:35:06,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [911] [2024-12-02 07:35:06,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [946] [2024-12-02 07:35:06,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1042] [2024-12-02 07:35:06,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1709] [2024-12-02 07:35:06,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3370] [2024-12-02 07:35:06,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [3379] [2024-12-02 07:35:06,259 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_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2024-12-02 07:35:06,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:35:06,285 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:35:06,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06 WrapperNode [2024-12-02 07:35:06,286 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:35:06,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:35:06,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:35:06,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:35:06,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,346 INFO L138 Inliner]: procedures = 96, calls = 348, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 905 [2024-12-02 07:35:06,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:35:06,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:35:06,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:35:06,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:35:06,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,360 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,384 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]. [2024-12-02 07:35:06,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,402 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:35:06,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:35:06,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:35:06,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:35:06,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (1/1) ... [2024-12-02 07:35:06,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:35:06,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:06,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:35:06,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:35:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:35:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 07:35:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 07:35:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 07:35:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 07:35:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 07:35:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 07:35:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 07:35:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 07:35:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 07:35:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 07:35:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 07:35:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 07:35:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 07:35:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 07:35:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 07:35:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 07:35:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 07:35:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 07:35:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 07:35:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 07:35:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 07:35:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 07:35:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-02 07:35:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-02 07:35:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 07:35:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 07:35:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 07:35:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 07:35:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 07:35:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 07:35:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 07:35:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 07:35:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 07:35:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:35:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:35:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 07:35:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 07:35:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-12-02 07:35:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-12-02 07:35:06,664 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:35:06,666 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:35:07,796 INFO L? ?]: Removed 475 outVars from TransFormulas that were not future-live. [2024-12-02 07:35:07,796 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:35:07,819 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:35:07,819 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:35:07,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:35:07 BoogieIcfgContainer [2024-12-02 07:35:07,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:35:07,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:35:07,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:35:07,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:35:07,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:35:05" (1/3) ... [2024-12-02 07:35:07,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9aaf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:35:07, skipping insertion in model container [2024-12-02 07:35:07,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:06" (2/3) ... [2024-12-02 07:35:07,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9aaf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:35:07, skipping insertion in model container [2024-12-02 07:35:07,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:35:07" (3/3) ... [2024-12-02 07:35:07,828 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product32.cil.c [2024-12-02 07:35:07,842 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:35:07,844 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product32.cil.c that has 28 procedures, 580 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:35:07,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:35:07,919 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;@5120ce1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:35:07,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:35:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 580 states, 448 states have (on average 1.6629464285714286) internal successors, (745), 466 states have internal predecessors, (745), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:35:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 07:35:07,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:07,936 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] [2024-12-02 07:35:07,936 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:07,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash -707913329, now seen corresponding path program 1 times [2024-12-02 07:35:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396493552] [2024-12-02 07:35:07,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:08,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:08,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396493552] [2024-12-02 07:35:08,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396493552] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:08,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:08,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:35:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135447864] [2024-12-02 07:35:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:08,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:08,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:08,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:08,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:35:08,396 INFO L87 Difference]: Start difference. First operand has 580 states, 448 states have (on average 1.6629464285714286) internal successors, (745), 466 states have internal predecessors, (745), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 07:35:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:08,564 INFO L93 Difference]: Finished difference Result 1153 states and 1902 transitions. [2024-12-02 07:35:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:08,566 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 [2024-12-02 07:35:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:08,582 INFO L225 Difference]: With dead ends: 1153 [2024-12-02 07:35:08,582 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 07:35:08,589 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 [2024-12-02 07:35:08,591 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 6 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:08,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2796 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 07:35:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-12-02 07:35:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 444 states have (on average 1.6531531531531531) internal successors, (734), 461 states have internal predecessors, (734), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 939 transitions. [2024-12-02 07:35:08,668 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 939 transitions. Word has length 63 [2024-12-02 07:35:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:08,668 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 939 transitions. [2024-12-02 07:35:08,668 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) [2024-12-02 07:35:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 939 transitions. [2024-12-02 07:35:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 07:35:08,672 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:08,672 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] [2024-12-02 07:35:08,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:35:08,673 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:08,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash 742542935, now seen corresponding path program 1 times [2024-12-02 07:35:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:08,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977097429] [2024-12-02 07:35:08,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:08,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977097429] [2024-12-02 07:35:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977097429] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:08,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:08,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:35:08,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629333630] [2024-12-02 07:35:08,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:08,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:08,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:08,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:35:08,852 INFO L87 Difference]: Start difference. First operand 575 states and 939 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) [2024-12-02 07:35:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:08,932 INFO L93 Difference]: Finished difference Result 1133 states and 1855 transitions. [2024-12-02 07:35:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:35:08,933 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 [2024-12-02 07:35:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:08,938 INFO L225 Difference]: With dead ends: 1133 [2024-12-02 07:35:08,939 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 07:35:08,941 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 [2024-12-02 07:35:08,942 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 4 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2768 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 [2024-12-02 07:35:08,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2768 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 07:35:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-12-02 07:35:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 444 states have (on average 1.6509009009009008) internal successors, (733), 461 states have internal predecessors, (733), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 938 transitions. [2024-12-02 07:35:08,978 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 938 transitions. Word has length 64 [2024-12-02 07:35:08,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:08,979 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 938 transitions. [2024-12-02 07:35:08,979 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) [2024-12-02 07:35:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 938 transitions. [2024-12-02 07:35:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 07:35:08,981 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:08,982 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] [2024-12-02 07:35:08,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:35:08,982 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:08,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:08,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1538726923, now seen corresponding path program 1 times [2024-12-02 07:35:08,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:08,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866641064] [2024-12-02 07:35:08,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:09,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866641064] [2024-12-02 07:35:09,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866641064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:09,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:09,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:35:09,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448384987] [2024-12-02 07:35:09,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:09,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:09,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:09,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:35:09,140 INFO L87 Difference]: Start difference. First operand 575 states and 938 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) [2024-12-02 07:35:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:09,222 INFO L93 Difference]: Finished difference Result 1133 states and 1854 transitions. [2024-12-02 07:35:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:35:09,222 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 [2024-12-02 07:35:09,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:09,229 INFO L225 Difference]: With dead ends: 1133 [2024-12-02 07:35:09,229 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 07:35:09,233 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 [2024-12-02 07:35:09,234 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 3 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2768 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 [2024-12-02 07:35:09,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2768 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 07:35:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-12-02 07:35:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 444 states have (on average 1.6486486486486487) internal successors, (732), 461 states have internal predecessors, (732), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 937 transitions. [2024-12-02 07:35:09,274 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 937 transitions. Word has length 65 [2024-12-02 07:35:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:09,274 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 937 transitions. [2024-12-02 07:35:09,274 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) [2024-12-02 07:35:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 937 transitions. [2024-12-02 07:35:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 07:35:09,276 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:09,277 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] [2024-12-02 07:35:09,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:35:09,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:09,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash -767660461, now seen corresponding path program 1 times [2024-12-02 07:35:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:09,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887462757] [2024-12-02 07:35:09,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887462757] [2024-12-02 07:35:09,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887462757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:09,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:09,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:35:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556528187] [2024-12-02 07:35:09,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:09,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:09,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:09,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:35:09,455 INFO L87 Difference]: Start difference. First operand 575 states and 937 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) [2024-12-02 07:35:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:09,532 INFO L93 Difference]: Finished difference Result 1133 states and 1853 transitions. [2024-12-02 07:35:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:35:09,533 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 [2024-12-02 07:35:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:09,539 INFO L225 Difference]: With dead ends: 1133 [2024-12-02 07:35:09,540 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 07:35:09,543 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 [2024-12-02 07:35:09,544 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 2 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2768 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 [2024-12-02 07:35:09,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2768 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 07:35:09,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-12-02 07:35:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 444 states have (on average 1.6463963963963963) internal successors, (731), 461 states have internal predecessors, (731), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 936 transitions. [2024-12-02 07:35:09,582 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 936 transitions. Word has length 66 [2024-12-02 07:35:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:09,582 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 936 transitions. [2024-12-02 07:35:09,582 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) [2024-12-02 07:35:09,583 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 936 transitions. [2024-12-02 07:35:09,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 07:35:09,584 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:09,584 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] [2024-12-02 07:35:09,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:35:09,584 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:09,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -469512569, now seen corresponding path program 1 times [2024-12-02 07:35:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702286848] [2024-12-02 07:35:09,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:09,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:09,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702286848] [2024-12-02 07:35:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702286848] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:09,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:09,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:35:09,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424943438] [2024-12-02 07:35:09,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:09,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:09,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:09,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:35:09,740 INFO L87 Difference]: Start difference. First operand 575 states and 936 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) [2024-12-02 07:35:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:09,808 INFO L93 Difference]: Finished difference Result 1133 states and 1852 transitions. [2024-12-02 07:35:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:35:09,809 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 [2024-12-02 07:35:09,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:09,815 INFO L225 Difference]: With dead ends: 1133 [2024-12-02 07:35:09,815 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 07:35:09,818 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 [2024-12-02 07:35:09,819 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 1 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2768 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 [2024-12-02 07:35:09,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2768 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 07:35:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-12-02 07:35:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 444 states have (on average 1.6441441441441442) internal successors, (730), 461 states have internal predecessors, (730), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 935 transitions. [2024-12-02 07:35:09,852 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 935 transitions. Word has length 67 [2024-12-02 07:35:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:09,852 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 935 transitions. [2024-12-02 07:35:09,853 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) [2024-12-02 07:35:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 935 transitions. [2024-12-02 07:35:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 07:35:09,854 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:09,854 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] [2024-12-02 07:35:09,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:35:09,854 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:09,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1035149745, now seen corresponding path program 1 times [2024-12-02 07:35:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:09,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180174808] [2024-12-02 07:35:09,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:09,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:10,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:10,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180174808] [2024-12-02 07:35:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180174808] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:10,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:10,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:35:10,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578391563] [2024-12-02 07:35:10,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:10,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:35:10,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:10,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:35:10,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:35:10,103 INFO L87 Difference]: Start difference. First operand 575 states and 935 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) [2024-12-02 07:35:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:10,240 INFO L93 Difference]: Finished difference Result 1144 states and 1869 transitions. [2024-12-02 07:35:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:35:10,241 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 [2024-12-02 07:35:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:10,245 INFO L225 Difference]: With dead ends: 1144 [2024-12-02 07:35:10,245 INFO L226 Difference]: Without dead ends: 590 [2024-12-02 07:35:10,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:35:10,247 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 91 mSDsluCounter, 6353 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7273 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 [2024-12-02 07:35:10,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7273 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-12-02 07:35:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2024-12-02 07:35:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 454 states have (on average 1.6409691629955947) internal successors, (745), 473 states have internal predecessors, (745), 104 states have call successors, (104), 28 states have call predecessors, (104), 29 states have return successors, (106), 100 states have call predecessors, (106), 103 states have call successors, (106) [2024-12-02 07:35:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 955 transitions. [2024-12-02 07:35:10,269 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 955 transitions. Word has length 68 [2024-12-02 07:35:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:10,269 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 955 transitions. [2024-12-02 07:35:10,269 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) [2024-12-02 07:35:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 955 transitions. [2024-12-02 07:35:10,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 07:35:10,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:10,270 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] [2024-12-02 07:35:10,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:35:10,270 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:10,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -265979730, now seen corresponding path program 1 times [2024-12-02 07:35:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:10,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601529521] [2024-12-02 07:35:10,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:10,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:10,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601529521] [2024-12-02 07:35:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601529521] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:10,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:35:10,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442951392] [2024-12-02 07:35:10,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:10,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:10,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:10,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:35:10,344 INFO L87 Difference]: Start difference. First operand 588 states and 955 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) [2024-12-02 07:35:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:10,400 INFO L93 Difference]: Finished difference Result 1151 states and 1880 transitions. [2024-12-02 07:35:10,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:10,401 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 [2024-12-02 07:35:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:10,405 INFO L225 Difference]: With dead ends: 1151 [2024-12-02 07:35:10,405 INFO L226 Difference]: Without dead ends: 584 [2024-12-02 07:35:10,408 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 [2024-12-02 07:35:10,408 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 1 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2763 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 [2024-12-02 07:35:10,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2763 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-12-02 07:35:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2024-12-02 07:35:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 452 states have (on average 1.6415929203539823) internal successors, (742), 470 states have internal predecessors, (742), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 99 states have call predecessors, (103), 102 states have call successors, (103) [2024-12-02 07:35:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 948 transitions. [2024-12-02 07:35:10,426 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 948 transitions. Word has length 68 [2024-12-02 07:35:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:10,426 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 948 transitions. [2024-12-02 07:35:10,427 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) [2024-12-02 07:35:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 948 transitions. [2024-12-02 07:35:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 07:35:10,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:10,428 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] [2024-12-02 07:35:10,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:35:10,428 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:10,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1781874837, now seen corresponding path program 1 times [2024-12-02 07:35:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769627468] [2024-12-02 07:35:10,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:10,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769627468] [2024-12-02 07:35:10,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769627468] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:10,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:10,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:35:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989194908] [2024-12-02 07:35:10,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:10,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:10,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:10,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:35:10,531 INFO L87 Difference]: Start difference. First operand 584 states and 948 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) [2024-12-02 07:35:10,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:10,786 INFO L93 Difference]: Finished difference Result 1194 states and 1952 transitions. [2024-12-02 07:35:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:35:10,787 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 [2024-12-02 07:35:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:10,791 INFO L225 Difference]: With dead ends: 1194 [2024-12-02 07:35:10,791 INFO L226 Difference]: Without dead ends: 616 [2024-12-02 07:35:10,793 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 [2024-12-02 07:35:10,793 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 72 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4406 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:10,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4406 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:35:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-12-02 07:35:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 589. [2024-12-02 07:35:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6280087527352298) internal successors, (744), 474 states have internal predecessors, (744), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 949 transitions. [2024-12-02 07:35:10,811 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 949 transitions. Word has length 69 [2024-12-02 07:35:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:10,811 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 949 transitions. [2024-12-02 07:35:10,811 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) [2024-12-02 07:35:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 949 transitions. [2024-12-02 07:35:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 07:35:10,812 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:10,812 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] [2024-12-02 07:35:10,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:35:10,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:10,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash 709091058, now seen corresponding path program 1 times [2024-12-02 07:35:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247311886] [2024-12-02 07:35:10,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:10,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247311886] [2024-12-02 07:35:10,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247311886] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:10,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:10,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:35:10,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758136365] [2024-12-02 07:35:10,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:10,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:10,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:10,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:10,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:35:10,909 INFO L87 Difference]: Start difference. First operand 589 states and 949 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) [2024-12-02 07:35:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:11,127 INFO L93 Difference]: Finished difference Result 1145 states and 1847 transitions. [2024-12-02 07:35:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:11,128 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 [2024-12-02 07:35:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:11,132 INFO L225 Difference]: With dead ends: 1145 [2024-12-02 07:35:11,132 INFO L226 Difference]: Without dead ends: 607 [2024-12-02 07:35:11,134 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 [2024-12-02 07:35:11,134 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 56 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4383 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:11,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4383 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:35:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-12-02 07:35:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 589. [2024-12-02 07:35:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6192560175054704) internal successors, (740), 474 states have internal predecessors, (740), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 945 transitions. [2024-12-02 07:35:11,154 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 945 transitions. Word has length 70 [2024-12-02 07:35:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:11,154 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 945 transitions. [2024-12-02 07:35:11,154 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) [2024-12-02 07:35:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 945 transitions. [2024-12-02 07:35:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 07:35:11,156 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:11,156 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] [2024-12-02 07:35:11,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:35:11,156 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:11,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1898764474, now seen corresponding path program 1 times [2024-12-02 07:35:11,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:11,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165272300] [2024-12-02 07:35:11,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:11,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:11,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:11,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165272300] [2024-12-02 07:35:11,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165272300] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:11,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:11,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:35:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787028811] [2024-12-02 07:35:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:11,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:11,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:11,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:35:11,255 INFO L87 Difference]: Start difference. First operand 589 states and 945 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) [2024-12-02 07:35:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:11,439 INFO L93 Difference]: Finished difference Result 1145 states and 1843 transitions. [2024-12-02 07:35:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:11,439 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 [2024-12-02 07:35:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:11,443 INFO L225 Difference]: With dead ends: 1145 [2024-12-02 07:35:11,443 INFO L226 Difference]: Without dead ends: 607 [2024-12-02 07:35:11,445 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 [2024-12-02 07:35:11,446 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 55 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:11,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4378 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-12-02 07:35:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 589. [2024-12-02 07:35:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6105032822757113) internal successors, (736), 474 states have internal predecessors, (736), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 941 transitions. [2024-12-02 07:35:11,462 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 941 transitions. Word has length 71 [2024-12-02 07:35:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:11,463 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 941 transitions. [2024-12-02 07:35:11,463 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) [2024-12-02 07:35:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 941 transitions. [2024-12-02 07:35:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 07:35:11,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:11,464 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] [2024-12-02 07:35:11,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:35:11,464 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:11,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1720980794, now seen corresponding path program 1 times [2024-12-02 07:35:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:11,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378514063] [2024-12-02 07:35:11,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:11,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:11,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378514063] [2024-12-02 07:35:11,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378514063] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:11,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:11,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:35:11,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087484354] [2024-12-02 07:35:11,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:11,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:35:11,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:11,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:35:11,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:35:11,564 INFO L87 Difference]: Start difference. First operand 589 states and 941 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) [2024-12-02 07:35:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:11,644 INFO L93 Difference]: Finished difference Result 1136 states and 1825 transitions. [2024-12-02 07:35:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:35:11,644 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 [2024-12-02 07:35:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:11,648 INFO L225 Difference]: With dead ends: 1136 [2024-12-02 07:35:11,648 INFO L226 Difference]: Without dead ends: 577 [2024-12-02 07:35:11,650 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 [2024-12-02 07:35:11,650 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 94 mSDsluCounter, 4459 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5370 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:11,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5370 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-12-02 07:35:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 568. [2024-12-02 07:35:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 436 states have (on average 1.603211009174312) internal successors, (699), 453 states have internal predecessors, (699), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 904 transitions. [2024-12-02 07:35:11,666 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 904 transitions. Word has length 71 [2024-12-02 07:35:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:11,666 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 904 transitions. [2024-12-02 07:35:11,667 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) [2024-12-02 07:35:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 904 transitions. [2024-12-02 07:35:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 07:35:11,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:11,668 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] [2024-12-02 07:35:11,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:35:11,668 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:11,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 210166903, now seen corresponding path program 1 times [2024-12-02 07:35:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325019033] [2024-12-02 07:35:11,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:11,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:11,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325019033] [2024-12-02 07:35:11,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325019033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:11,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:11,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:35:11,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780314963] [2024-12-02 07:35:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:11,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:11,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:11,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:11,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:35:11,759 INFO L87 Difference]: Start difference. First operand 568 states and 904 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) [2024-12-02 07:35:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:11,861 INFO L93 Difference]: Finished difference Result 1115 states and 1788 transitions. [2024-12-02 07:35:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:11,861 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 [2024-12-02 07:35:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:11,865 INFO L225 Difference]: With dead ends: 1115 [2024-12-02 07:35:11,865 INFO L226 Difference]: Without dead ends: 577 [2024-12-02 07:35:11,867 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 [2024-12-02 07:35:11,867 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 39 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4383 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 [2024-12-02 07:35:11,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4383 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-12-02 07:35:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 568. [2024-12-02 07:35:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 436 states have (on average 1.6009174311926606) internal successors, (698), 453 states have internal predecessors, (698), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 903 transitions. [2024-12-02 07:35:11,899 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 903 transitions. Word has length 72 [2024-12-02 07:35:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:11,900 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 903 transitions. [2024-12-02 07:35:11,900 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) [2024-12-02 07:35:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 903 transitions. [2024-12-02 07:35:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 07:35:11,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:11,901 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] [2024-12-02 07:35:11,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:35:11,901 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:11,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash -510518049, now seen corresponding path program 1 times [2024-12-02 07:35:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:11,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841021810] [2024-12-02 07:35:11,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:11,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841021810] [2024-12-02 07:35:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841021810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:11,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:11,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:35:11,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494728279] [2024-12-02 07:35:11,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:11,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:11,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:11,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:11,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:35:11,989 INFO L87 Difference]: Start difference. First operand 568 states and 903 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) [2024-12-02 07:35:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:12,085 INFO L93 Difference]: Finished difference Result 1115 states and 1787 transitions. [2024-12-02 07:35:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:12,086 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 [2024-12-02 07:35:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:12,089 INFO L225 Difference]: With dead ends: 1115 [2024-12-02 07:35:12,089 INFO L226 Difference]: Without dead ends: 577 [2024-12-02 07:35:12,091 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 [2024-12-02 07:35:12,091 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 38 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4383 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 [2024-12-02 07:35:12,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4383 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-12-02 07:35:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 568. [2024-12-02 07:35:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 436 states have (on average 1.598623853211009) internal successors, (697), 453 states have internal predecessors, (697), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:12,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 902 transitions. [2024-12-02 07:35:12,108 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 902 transitions. Word has length 73 [2024-12-02 07:35:12,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:12,108 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 902 transitions. [2024-12-02 07:35:12,109 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) [2024-12-02 07:35:12,109 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 902 transitions. [2024-12-02 07:35:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 07:35:12,109 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:12,109 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] [2024-12-02 07:35:12,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:35:12,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:12,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1290682884, now seen corresponding path program 1 times [2024-12-02 07:35:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:12,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131972201] [2024-12-02 07:35:12,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:12,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:12,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:12,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131972201] [2024-12-02 07:35:12,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131972201] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:12,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:12,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 07:35:12,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763474859] [2024-12-02 07:35:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:12,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:35:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:12,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:35:12,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:35:12,262 INFO L87 Difference]: Start difference. First operand 568 states and 902 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) [2024-12-02 07:35:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:12,422 INFO L93 Difference]: Finished difference Result 1105 states and 1769 transitions. [2024-12-02 07:35:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:35:12,423 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 [2024-12-02 07:35:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:12,427 INFO L225 Difference]: With dead ends: 1105 [2024-12-02 07:35:12,427 INFO L226 Difference]: Without dead ends: 573 [2024-12-02 07:35:12,428 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 [2024-12-02 07:35:12,429 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 21 mSDsluCounter, 6833 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7691 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:12,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7691 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-12-02 07:35:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 570. [2024-12-02 07:35:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 438 states have (on average 1.5936073059360731) internal successors, (698), 455 states have internal predecessors, (698), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 07:35:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 903 transitions. [2024-12-02 07:35:12,444 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 903 transitions. Word has length 74 [2024-12-02 07:35:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:12,444 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 903 transitions. [2024-12-02 07:35:12,445 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) [2024-12-02 07:35:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 903 transitions. [2024-12-02 07:35:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 07:35:12,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:12,446 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] [2024-12-02 07:35:12,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:35:12,446 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:12,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1572060628, now seen corresponding path program 1 times [2024-12-02 07:35:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:12,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739455049] [2024-12-02 07:35:12,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:12,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:35:12,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:12,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739455049] [2024-12-02 07:35:12,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739455049] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:12,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:12,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:35:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063035441] [2024-12-02 07:35:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:12,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:35:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:12,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:35:12,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:35:12,589 INFO L87 Difference]: Start difference. First operand 570 states and 903 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) [2024-12-02 07:35:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:12,746 INFO L93 Difference]: Finished difference Result 1611 states and 2603 transitions. [2024-12-02 07:35:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:35:12,746 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 [2024-12-02 07:35:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:12,754 INFO L225 Difference]: With dead ends: 1611 [2024-12-02 07:35:12,754 INFO L226 Difference]: Without dead ends: 1084 [2024-12-02 07:35:12,757 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 [2024-12-02 07:35:12,757 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 836 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:12,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1799 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2024-12-02 07:35:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1021. [2024-12-02 07:35:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 789 states have (on average 1.6121673003802282) internal successors, (1272), 815 states have internal predecessors, (1272), 182 states have call successors, (182), 51 states have call predecessors, (182), 49 states have return successors, (187), 169 states have call predecessors, (187), 180 states have call successors, (187) [2024-12-02 07:35:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1641 transitions. [2024-12-02 07:35:12,809 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1641 transitions. Word has length 75 [2024-12-02 07:35:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:12,809 INFO L471 AbstractCegarLoop]: Abstraction has 1021 states and 1641 transitions. [2024-12-02 07:35:12,809 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) [2024-12-02 07:35:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1641 transitions. [2024-12-02 07:35:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 07:35:12,813 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:12,814 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:12,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:35:12,814 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:12,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1066103349, now seen corresponding path program 1 times [2024-12-02 07:35:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750971667] [2024-12-02 07:35:12,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:12,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 07:35:12,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:12,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750971667] [2024-12-02 07:35:12,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750971667] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:12,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139869682] [2024-12-02 07:35:12,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:12,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:12,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:12,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:12,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:35:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:13,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:35:13,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 07:35:13,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139869682] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:13,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:13,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 07:35:13,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442683664] [2024-12-02 07:35:13,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:13,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:35:13,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:13,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:35:13,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:35:13,492 INFO L87 Difference]: Start difference. First operand 1021 states and 1641 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:14,142 INFO L93 Difference]: Finished difference Result 2015 states and 3319 transitions. [2024-12-02 07:35:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2024-12-02 07:35:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:14,149 INFO L225 Difference]: With dead ends: 2015 [2024-12-02 07:35:14,149 INFO L226 Difference]: Without dead ends: 1037 [2024-12-02 07:35:14,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:35:14,153 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 839 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:14,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2188 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:35:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2024-12-02 07:35:14,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2024-12-02 07:35:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 803 states have (on average 1.613947696139477) internal successors, (1296), 829 states have internal predecessors, (1296), 182 states have call successors, (182), 53 states have call predecessors, (182), 51 states have return successors, (189), 169 states have call predecessors, (189), 180 states have call successors, (189) [2024-12-02 07:35:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1667 transitions. [2024-12-02 07:35:14,195 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1667 transitions. Word has length 130 [2024-12-02 07:35:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:14,195 INFO L471 AbstractCegarLoop]: Abstraction has 1037 states and 1667 transitions. [2024-12-02 07:35:14,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:14,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1667 transitions. [2024-12-02 07:35:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-12-02 07:35:14,199 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:14,199 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:14,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:35:14,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 07:35:14,399 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:14,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -858077071, now seen corresponding path program 1 times [2024-12-02 07:35:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:14,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124017845] [2024-12-02 07:35:14,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 07:35:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124017845] [2024-12-02 07:35:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124017845] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78028057] [2024-12-02 07:35:14,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:14,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:14,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:14,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:14,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:35:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:14,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:35:14,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 07:35:15,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78028057] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:15,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:15,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-12-02 07:35:15,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131877171] [2024-12-02 07:35:15,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:15,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:15,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:15,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:15,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:35:15,087 INFO L87 Difference]: Start difference. First operand 1037 states and 1667 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:35:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:15,587 INFO L93 Difference]: Finished difference Result 2632 states and 4240 transitions. [2024-12-02 07:35:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:15,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-12-02 07:35:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:15,601 INFO L225 Difference]: With dead ends: 2632 [2024-12-02 07:35:15,601 INFO L226 Difference]: Without dead ends: 1638 [2024-12-02 07:35:15,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:35:15,607 INFO L435 NwaCegarLoop]: 1140 mSDtfsCounter, 838 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:15,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 4531 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:35:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2024-12-02 07:35:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1636. [2024-12-02 07:35:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1263 states have (on average 1.5859065716547902) internal successors, (2003), 1292 states have internal predecessors, (2003), 285 states have call successors, (285), 91 states have call predecessors, (285), 87 states have return successors, (319), 268 states have call predecessors, (319), 281 states have call successors, (319) [2024-12-02 07:35:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2607 transitions. [2024-12-02 07:35:15,710 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2607 transitions. Word has length 132 [2024-12-02 07:35:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:15,710 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2607 transitions. [2024-12-02 07:35:15,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:35:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2607 transitions. [2024-12-02 07:35:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 07:35:15,716 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:15,716 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:15,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:35:15,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 07:35:15,917 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:15,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1967416388, now seen corresponding path program 1 times [2024-12-02 07:35:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675871868] [2024-12-02 07:35:15,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:15,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 07:35:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:16,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675871868] [2024-12-02 07:35:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675871868] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:16,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569765465] [2024-12-02 07:35:16,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:16,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:16,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:16,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:35:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:16,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:35:16,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 07:35:16,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:16,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569765465] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:16,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:16,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 07:35:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799341356] [2024-12-02 07:35:16,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:16,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:35:16,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:16,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:35:16,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:35:16,519 INFO L87 Difference]: Start difference. First operand 1636 states and 2607 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:17,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:17,107 INFO L93 Difference]: Finished difference Result 3261 states and 5342 transitions. [2024-12-02 07:35:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2024-12-02 07:35:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:17,120 INFO L225 Difference]: With dead ends: 3261 [2024-12-02 07:35:17,120 INFO L226 Difference]: Without dead ends: 1668 [2024-12-02 07:35:17,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:35:17,129 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 823 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:17,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 2185 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:35:17,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2024-12-02 07:35:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2024-12-02 07:35:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1291 states have (on average 1.5886909372579396) internal successors, (2051), 1320 states have internal predecessors, (2051), 285 states have call successors, (285), 95 states have call predecessors, (285), 91 states have return successors, (323), 268 states have call predecessors, (323), 281 states have call successors, (323) [2024-12-02 07:35:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2659 transitions. [2024-12-02 07:35:17,217 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2659 transitions. Word has length 133 [2024-12-02 07:35:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:17,217 INFO L471 AbstractCegarLoop]: Abstraction has 1668 states and 2659 transitions. [2024-12-02 07:35:17,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2659 transitions. [2024-12-02 07:35:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 07:35:17,222 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:17,223 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:17,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:35:17,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 07:35:17,423 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:17,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash -354512859, now seen corresponding path program 1 times [2024-12-02 07:35:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:17,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601798935] [2024-12-02 07:35:17,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 07:35:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601798935] [2024-12-02 07:35:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601798935] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203257084] [2024-12-02 07:35:17,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:17,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:17,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:17,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:35:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:17,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:35:17,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 07:35:17,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203257084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:17,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 07:35:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801954851] [2024-12-02 07:35:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:17,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:35:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:17,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:35:17,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:35:17,985 INFO L87 Difference]: Start difference. First operand 1668 states and 2659 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:18,563 INFO L93 Difference]: Finished difference Result 3325 states and 5434 transitions. [2024-12-02 07:35:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:18,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2024-12-02 07:35:18,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:18,575 INFO L225 Difference]: With dead ends: 3325 [2024-12-02 07:35:18,575 INFO L226 Difference]: Without dead ends: 1700 [2024-12-02 07:35:18,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:35:18,584 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 827 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:18,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2182 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:35:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2024-12-02 07:35:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1700. [2024-12-02 07:35:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1319 states have (on average 1.5913570887035633) internal successors, (2099), 1348 states have internal predecessors, (2099), 285 states have call successors, (285), 99 states have call predecessors, (285), 95 states have return successors, (327), 268 states have call predecessors, (327), 281 states have call successors, (327) [2024-12-02 07:35:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2711 transitions. [2024-12-02 07:35:18,662 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2711 transitions. Word has length 136 [2024-12-02 07:35:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:18,663 INFO L471 AbstractCegarLoop]: Abstraction has 1700 states and 2711 transitions. [2024-12-02 07:35:18,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2711 transitions. [2024-12-02 07:35:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 07:35:18,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:18,668 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:18,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:35:18,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:18,869 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:18,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1655588248, now seen corresponding path program 1 times [2024-12-02 07:35:18,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779917513] [2024-12-02 07:35:18,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:35:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779917513] [2024-12-02 07:35:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779917513] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158427203] [2024-12-02 07:35:18,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:18,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:18,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:18,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:18,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:35:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:19,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:35:19,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 07:35:19,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:19,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158427203] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:19,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:19,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 07:35:19,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757719490] [2024-12-02 07:35:19,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:19,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:35:19,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:19,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:35:19,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:35:19,372 INFO L87 Difference]: Start difference. First operand 1700 states and 2711 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:19,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:19,930 INFO L93 Difference]: Finished difference Result 3389 states and 5526 transitions. [2024-12-02 07:35:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:19,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-12-02 07:35:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:19,940 INFO L225 Difference]: With dead ends: 3389 [2024-12-02 07:35:19,940 INFO L226 Difference]: Without dead ends: 1732 [2024-12-02 07:35:19,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:35:19,948 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 805 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:19,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 2179 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:35:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-12-02 07:35:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2024-12-02 07:35:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1347 states have (on average 1.5939123979213066) internal successors, (2147), 1376 states have internal predecessors, (2147), 285 states have call successors, (285), 103 states have call predecessors, (285), 99 states have return successors, (331), 268 states have call predecessors, (331), 281 states have call successors, (331) [2024-12-02 07:35:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2763 transitions. [2024-12-02 07:35:20,024 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2763 transitions. Word has length 139 [2024-12-02 07:35:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:20,025 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2763 transitions. [2024-12-02 07:35:20,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:35:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2763 transitions. [2024-12-02 07:35:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 07:35:20,030 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:20,030 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] [2024-12-02 07:35:20,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:35:20,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:20,231 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:20,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:20,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1735849409, now seen corresponding path program 1 times [2024-12-02 07:35:20,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:20,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679062389] [2024-12-02 07:35:20,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:20,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 07:35:20,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:20,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679062389] [2024-12-02 07:35:20,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679062389] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:20,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50233713] [2024-12-02 07:35:20,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:20,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:20,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:35:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:20,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:35:20,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:35:20,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50233713] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:20,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:20,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-12-02 07:35:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523101735] [2024-12-02 07:35:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:20,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:20,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:20,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:35:20,929 INFO L87 Difference]: Start difference. First operand 1732 states and 2763 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-12-02 07:35:22,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:22,350 INFO L93 Difference]: Finished difference Result 3512 states and 5609 transitions. [2024-12-02 07:35:22,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:22,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 142 [2024-12-02 07:35:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:22,362 INFO L225 Difference]: With dead ends: 3512 [2024-12-02 07:35:22,362 INFO L226 Difference]: Without dead ends: 1826 [2024-12-02 07:35:22,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:35:22,370 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 2126 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:22,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 868 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 07:35:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2024-12-02 07:35:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1692. [2024-12-02 07:35:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1263 states have (on average 1.5558194774346794) internal successors, (1965), 1312 states have internal predecessors, (1965), 331 states have call successors, (331), 93 states have call predecessors, (331), 97 states have return successors, (377), 312 states have call predecessors, (377), 327 states have call successors, (377) [2024-12-02 07:35:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2673 transitions. [2024-12-02 07:35:22,462 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2673 transitions. Word has length 142 [2024-12-02 07:35:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:22,462 INFO L471 AbstractCegarLoop]: Abstraction has 1692 states and 2673 transitions. [2024-12-02 07:35:22,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-12-02 07:35:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2673 transitions. [2024-12-02 07:35:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 07:35:22,466 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:22,467 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] [2024-12-02 07:35:22,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:35:22,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:22,667 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:22,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash 781909251, now seen corresponding path program 1 times [2024-12-02 07:35:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694845646] [2024-12-02 07:35:22,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 07:35:22,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:22,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694845646] [2024-12-02 07:35:22,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694845646] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:22,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283429239] [2024-12-02 07:35:22,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:22,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:22,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:22,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:22,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:35:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:23,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 07:35:23,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:35:23,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:23,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283429239] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:23,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:23,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-12-02 07:35:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286202659] [2024-12-02 07:35:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:23,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:35:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:23,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:35:23,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:35:23,410 INFO L87 Difference]: Start difference. First operand 1692 states and 2673 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) [2024-12-02 07:35:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:27,055 INFO L93 Difference]: Finished difference Result 7222 states and 11732 transitions. [2024-12-02 07:35:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 07:35:27,055 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 [2024-12-02 07:35:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:27,092 INFO L225 Difference]: With dead ends: 7222 [2024-12-02 07:35:27,092 INFO L226 Difference]: Without dead ends: 5575 [2024-12-02 07:35:27,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-12-02 07:35:27,105 INFO L435 NwaCegarLoop]: 554 mSDtfsCounter, 2812 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 6130 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 6853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 6130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:27,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2918 Valid, 2103 Invalid, 6853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 6130 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 07:35:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2024-12-02 07:35:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5171. [2024-12-02 07:35:27,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 3844 states have (on average 1.5517689906347554) internal successors, (5965), 3998 states have internal predecessors, (5965), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 310 states have return successors, (1360), 988 states have call predecessors, (1360), 1008 states have call successors, (1360) [2024-12-02 07:35:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 8341 transitions. [2024-12-02 07:35:27,445 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 8341 transitions. Word has length 142 [2024-12-02 07:35:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:27,446 INFO L471 AbstractCegarLoop]: Abstraction has 5171 states and 8341 transitions. [2024-12-02 07:35:27,447 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) [2024-12-02 07:35:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 8341 transitions. [2024-12-02 07:35:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:35:27,452 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:27,452 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] [2024-12-02 07:35:27,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:35:27,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:27,653 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:27,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash -542800450, now seen corresponding path program 1 times [2024-12-02 07:35:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386869872] [2024-12-02 07:35:27,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:27,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 07:35:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386869872] [2024-12-02 07:35:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386869872] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116825997] [2024-12-02 07:35:27,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:27,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:27,932 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:27,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:35:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:28,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:35:28,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:35:28,222 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:28,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116825997] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:28,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:28,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-12-02 07:35:28,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381806301] [2024-12-02 07:35:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:28,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:35:28,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:28,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:35:28,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:35:28,223 INFO L87 Difference]: Start difference. First operand 5171 states and 8341 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) [2024-12-02 07:35:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:28,470 INFO L93 Difference]: Finished difference Result 12098 states and 19725 transitions. [2024-12-02 07:35:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:35:28,471 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 [2024-12-02 07:35:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:28,521 INFO L225 Difference]: With dead ends: 12098 [2024-12-02 07:35:28,521 INFO L226 Difference]: Without dead ends: 6976 [2024-12-02 07:35:28,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:35:28,549 INFO L435 NwaCegarLoop]: 1695 mSDtfsCounter, 845 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2571 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 [2024-12-02 07:35:28,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2571 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2024-12-02 07:35:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 5165. [2024-12-02 07:35:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 3840 states have (on average 1.5513020833333333) internal successors, (5957), 3992 states have internal predecessors, (5957), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 308 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-12-02 07:35:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 8309 transitions. [2024-12-02 07:35:28,952 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 8309 transitions. Word has length 147 [2024-12-02 07:35:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:28,952 INFO L471 AbstractCegarLoop]: Abstraction has 5165 states and 8309 transitions. [2024-12-02 07:35:28,952 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) [2024-12-02 07:35:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 8309 transitions. [2024-12-02 07:35:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:35:28,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:28,957 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] [2024-12-02 07:35:28,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:35:29,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 07:35:29,157 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:29,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash 116731072, now seen corresponding path program 1 times [2024-12-02 07:35:29,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:29,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018777504] [2024-12-02 07:35:29,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:29,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 07:35:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018777504] [2024-12-02 07:35:29,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018777504] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:29,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254721081] [2024-12-02 07:35:29,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:29,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:29,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:29,387 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:29,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:35:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:29,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:35:29,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:35:29,761 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:29,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254721081] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:29,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:29,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-12-02 07:35:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039992070] [2024-12-02 07:35:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:29,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:29,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:29,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:35:29,763 INFO L87 Difference]: Start difference. First operand 5165 states and 8309 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) [2024-12-02 07:35:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:30,212 INFO L93 Difference]: Finished difference Result 5167 states and 8310 transitions. [2024-12-02 07:35:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:35:30,213 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 [2024-12-02 07:35:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:30,242 INFO L225 Difference]: With dead ends: 5167 [2024-12-02 07:35:30,242 INFO L226 Difference]: Without dead ends: 5165 [2024-12-02 07:35:30,246 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 [2024-12-02 07:35:30,247 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 391 mSDsluCounter, 2936 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:30,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 3919 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:35:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2024-12-02 07:35:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5165. [2024-12-02 07:35:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 3840 states have (on average 1.5447916666666666) internal successors, (5932), 3992 states have internal predecessors, (5932), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 308 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-12-02 07:35:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 8284 transitions. [2024-12-02 07:35:30,461 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 8284 transitions. Word has length 147 [2024-12-02 07:35:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:30,461 INFO L471 AbstractCegarLoop]: Abstraction has 5165 states and 8284 transitions. [2024-12-02 07:35:30,461 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) [2024-12-02 07:35:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 8284 transitions. [2024-12-02 07:35:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 07:35:30,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:30,465 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] [2024-12-02 07:35:30,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 07:35:30,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:30,665 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:30,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:30,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1100800758, now seen corresponding path program 1 times [2024-12-02 07:35:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:30,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639530179] [2024-12-02 07:35:30,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 07:35:30,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:30,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639530179] [2024-12-02 07:35:30,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639530179] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:30,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029786729] [2024-12-02 07:35:30,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:30,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:30,884 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:30,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:35:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:31,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:35:31,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 07:35:31,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:31,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029786729] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:31,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:31,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 07:35:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302329037] [2024-12-02 07:35:31,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:31,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:31,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:31,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:35:31,171 INFO L87 Difference]: Start difference. First operand 5165 states and 8284 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) [2024-12-02 07:35:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:31,478 INFO L93 Difference]: Finished difference Result 10555 states and 17178 transitions. [2024-12-02 07:35:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:31,478 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 [2024-12-02 07:35:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:31,515 INFO L225 Difference]: With dead ends: 10555 [2024-12-02 07:35:31,515 INFO L226 Difference]: Without dead ends: 5435 [2024-12-02 07:35:31,534 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 [2024-12-02 07:35:31,535 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 144 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:31,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2443 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5435 states. [2024-12-02 07:35:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5435 to 5399. [2024-12-02 07:35:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 4068 states have (on average 1.5658800393313668) internal successors, (6370), 4220 states have internal predecessors, (6370), 1016 states have call successors, (1016), 267 states have call predecessors, (1016), 314 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-12-02 07:35:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 8722 transitions. [2024-12-02 07:35:31,743 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 8722 transitions. Word has length 170 [2024-12-02 07:35:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:31,743 INFO L471 AbstractCegarLoop]: Abstraction has 5399 states and 8722 transitions. [2024-12-02 07:35:31,743 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) [2024-12-02 07:35:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 8722 transitions. [2024-12-02 07:35:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 07:35:31,748 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:31,748 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] [2024-12-02 07:35:31,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:35:31,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:31,949 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:31,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash 725051515, now seen corresponding path program 1 times [2024-12-02 07:35:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388874116] [2024-12-02 07:35:31,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 07:35:32,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388874116] [2024-12-02 07:35:32,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388874116] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611299027] [2024-12-02 07:35:32,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:32,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:32,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:32,239 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:32,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:35:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:32,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:35:32,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 07:35:32,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611299027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:32,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:32,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 07:35:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611326550] [2024-12-02 07:35:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:32,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:32,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:32,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:35:32,606 INFO L87 Difference]: Start difference. First operand 5399 states and 8722 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) [2024-12-02 07:35:32,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:32,964 INFO L93 Difference]: Finished difference Result 11041 states and 18054 transitions. [2024-12-02 07:35:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:32,965 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 [2024-12-02 07:35:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:32,998 INFO L225 Difference]: With dead ends: 11041 [2024-12-02 07:35:32,999 INFO L226 Difference]: Without dead ends: 5687 [2024-12-02 07:35:33,015 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 [2024-12-02 07:35:33,015 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 142 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:33,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2440 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2024-12-02 07:35:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5633. [2024-12-02 07:35:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5633 states, 4296 states have (on average 1.584729981378026) internal successors, (6808), 4448 states have internal predecessors, (6808), 1016 states have call successors, (1016), 273 states have call predecessors, (1016), 320 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-12-02 07:35:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 9160 transitions. [2024-12-02 07:35:33,203 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 9160 transitions. Word has length 175 [2024-12-02 07:35:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:33,204 INFO L471 AbstractCegarLoop]: Abstraction has 5633 states and 9160 transitions. [2024-12-02 07:35:33,204 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) [2024-12-02 07:35:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 9160 transitions. [2024-12-02 07:35:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 07:35:33,208 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:33,208 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] [2024-12-02 07:35:33,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 07:35:33,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 07:35:33,409 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:33,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -352012821, now seen corresponding path program 1 times [2024-12-02 07:35:33,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:33,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738912964] [2024-12-02 07:35:33,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:33,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-12-02 07:35:33,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738912964] [2024-12-02 07:35:33,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738912964] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055324930] [2024-12-02 07:35:33,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:33,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:33,617 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:33,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 07:35:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:33,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:35:33,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 07:35:33,937 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:33,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055324930] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:33,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:33,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 07:35:33,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778101879] [2024-12-02 07:35:33,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:33,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:33,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:33,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:33,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:35:33,939 INFO L87 Difference]: Start difference. First operand 5633 states and 9160 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) [2024-12-02 07:35:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:34,367 INFO L93 Difference]: Finished difference Result 11527 states and 18930 transitions. [2024-12-02 07:35:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:34,368 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 [2024-12-02 07:35:34,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:34,391 INFO L225 Difference]: With dead ends: 11527 [2024-12-02 07:35:34,391 INFO L226 Difference]: Without dead ends: 5939 [2024-12-02 07:35:34,406 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 [2024-12-02 07:35:34,407 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 140 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2437 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 [2024-12-02 07:35:34,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2437 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:35:34,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2024-12-02 07:35:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5867. [2024-12-02 07:35:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 4524 states have (on average 1.6016799292661361) internal successors, (7246), 4676 states have internal predecessors, (7246), 1016 states have call successors, (1016), 279 states have call predecessors, (1016), 326 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-12-02 07:35:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 9598 transitions. [2024-12-02 07:35:34,796 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 9598 transitions. Word has length 179 [2024-12-02 07:35:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:34,797 INFO L471 AbstractCegarLoop]: Abstraction has 5867 states and 9598 transitions. [2024-12-02 07:35:34,797 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) [2024-12-02 07:35:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 9598 transitions. [2024-12-02 07:35:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 07:35:34,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:34,802 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] [2024-12-02 07:35:34,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 07:35:35,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 07:35:35,003 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:35,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1009571434, now seen corresponding path program 1 times [2024-12-02 07:35:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:35,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768311614] [2024-12-02 07:35:35,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:35,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-12-02 07:35:35,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:35,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768311614] [2024-12-02 07:35:35,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768311614] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:35,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414316271] [2024-12-02 07:35:35,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:35,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:35,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:35,339 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:35,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 07:35:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:35,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:35:35,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 07:35:35,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:35,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414316271] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:35,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:35,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 07:35:35,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476829806] [2024-12-02 07:35:35,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:35,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:35,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:35,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:35,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:35:35,688 INFO L87 Difference]: Start difference. First operand 5867 states and 9598 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) [2024-12-02 07:35:36,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:36,060 INFO L93 Difference]: Finished difference Result 12013 states and 19806 transitions. [2024-12-02 07:35:36,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:36,061 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 [2024-12-02 07:35:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:36,091 INFO L225 Difference]: With dead ends: 12013 [2024-12-02 07:35:36,091 INFO L226 Difference]: Without dead ends: 6191 [2024-12-02 07:35:36,107 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 [2024-12-02 07:35:36,108 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 138 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:36,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2427 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2024-12-02 07:35:36,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6101. [2024-12-02 07:35:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6101 states, 4752 states have (on average 1.617003367003367) internal successors, (7684), 4904 states have internal predecessors, (7684), 1016 states have call successors, (1016), 285 states have call predecessors, (1016), 332 states have return successors, (1336), 988 states have call predecessors, (1336), 1008 states have call successors, (1336) [2024-12-02 07:35:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6101 states to 6101 states and 10036 transitions. [2024-12-02 07:35:36,349 INFO L78 Accepts]: Start accepts. Automaton has 6101 states and 10036 transitions. Word has length 182 [2024-12-02 07:35:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:36,349 INFO L471 AbstractCegarLoop]: Abstraction has 6101 states and 10036 transitions. [2024-12-02 07:35:36,349 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) [2024-12-02 07:35:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6101 states and 10036 transitions. [2024-12-02 07:35:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 07:35:36,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:36,354 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:36,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 07:35:36,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 07:35:36,554 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:36,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash 319531556, now seen corresponding path program 1 times [2024-12-02 07:35:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:36,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306856373] [2024-12-02 07:35:36,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:36,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:36,826 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 07:35:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306856373] [2024-12-02 07:35:36,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306856373] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919078527] [2024-12-02 07:35:36,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:36,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:36,828 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:36,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 07:35:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:37,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 07:35:37,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-12-02 07:35:37,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:37,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919078527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:37,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:37,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2024-12-02 07:35:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823501474] [2024-12-02 07:35:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:37,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:35:37,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:37,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:35:37,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:35:37,250 INFO L87 Difference]: Start difference. First operand 6101 states and 10036 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 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) [2024-12-02 07:35:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:39,900 INFO L93 Difference]: Finished difference Result 19059 states and 31924 transitions. [2024-12-02 07:35:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:35:39,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 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 [2024-12-02 07:35:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:39,942 INFO L225 Difference]: With dead ends: 19059 [2024-12-02 07:35:39,942 INFO L226 Difference]: Without dead ends: 10037 [2024-12-02 07:35:39,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:35:39,968 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 1979 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 4147 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 4640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 4147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:39,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 2407 Invalid, 4640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 4147 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:35:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10037 states. [2024-12-02 07:35:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10037 to 9972. [2024-12-02 07:35:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9972 states, 7661 states have (on average 1.6114084323195406) internal successors, (12345), 7968 states have internal predecessors, (12345), 1724 states have call successors, (1724), 455 states have call predecessors, (1724), 586 states have return successors, (2347), 1696 states have call predecessors, (2347), 1716 states have call successors, (2347) [2024-12-02 07:35:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9972 states to 9972 states and 16416 transitions. [2024-12-02 07:35:40,397 INFO L78 Accepts]: Start accepts. Automaton has 9972 states and 16416 transitions. Word has length 184 [2024-12-02 07:35:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:40,397 INFO L471 AbstractCegarLoop]: Abstraction has 9972 states and 16416 transitions. [2024-12-02 07:35:40,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 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) [2024-12-02 07:35:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 9972 states and 16416 transitions. [2024-12-02 07:35:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 07:35:40,403 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:40,403 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:40,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 07:35:40,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 07:35:40,604 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:40,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash -974965326, now seen corresponding path program 1 times [2024-12-02 07:35:40,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:40,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339520899] [2024-12-02 07:35:40,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-12-02 07:35:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339520899] [2024-12-02 07:35:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339520899] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:35:40,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990416754] [2024-12-02 07:35:40,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:40,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:35:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:40,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:35:40,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:35:40,794 INFO L87 Difference]: Start difference. First operand 9972 states and 16416 transitions. Second operand has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-12-02 07:35:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:41,195 INFO L93 Difference]: Finished difference Result 19641 states and 32343 transitions. [2024-12-02 07:35:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:35:41,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 [2024-12-02 07:35:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:41,227 INFO L225 Difference]: With dead ends: 19641 [2024-12-02 07:35:41,227 INFO L226 Difference]: Without dead ends: 9354 [2024-12-02 07:35:41,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:35:41,249 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 30 mSDsluCounter, 5124 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5983 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 [2024-12-02 07:35:41,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5983 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:35:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9354 states. [2024-12-02 07:35:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9354 to 9330. [2024-12-02 07:35:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9330 states, 7254 states have (on average 1.6253101736972704) internal successors, (11790), 7536 states have internal predecessors, (11790), 1539 states have call successors, (1539), 431 states have call predecessors, (1539), 536 states have return successors, (1995), 1490 states have call predecessors, (1995), 1531 states have call successors, (1995) [2024-12-02 07:35:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 15324 transitions. [2024-12-02 07:35:41,863 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 15324 transitions. Word has length 187 [2024-12-02 07:35:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:41,863 INFO L471 AbstractCegarLoop]: Abstraction has 9330 states and 15324 transitions. [2024-12-02 07:35:41,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-12-02 07:35:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 15324 transitions. [2024-12-02 07:35:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-12-02 07:35:41,871 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:41,871 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 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] [2024-12-02 07:35:41,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 07:35:41,871 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:41,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 218618181, now seen corresponding path program 1 times [2024-12-02 07:35:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988621353] [2024-12-02 07:35:41,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-12-02 07:35:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988621353] [2024-12-02 07:35:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988621353] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140078662] [2024-12-02 07:35:42,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:42,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:42,457 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:42,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 07:35:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:42,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 4021 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:35:43,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-12-02 07:35:43,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140078662] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-12-02 07:35:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508577901] [2024-12-02 07:35:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:43,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:35:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:43,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:35:43,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:35:43,032 INFO L87 Difference]: Start difference. First operand 9330 states and 15324 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-12-02 07:35:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:43,478 INFO L93 Difference]: Finished difference Result 19158 states and 31894 transitions. [2024-12-02 07:35:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:35:43,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 3 states have call successors, (39), 3 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 531 [2024-12-02 07:35:43,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:43,532 INFO L225 Difference]: With dead ends: 19158 [2024-12-02 07:35:43,532 INFO L226 Difference]: Without dead ends: 14244 [2024-12-02 07:35:43,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:35:43,548 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 877 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:43,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1736 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:43,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14244 states. [2024-12-02 07:35:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14244 to 14242. [2024-12-02 07:35:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14242 states, 11022 states have (on average 1.6245690437307203) internal successors, (17906), 11479 states have internal predecessors, (17906), 2406 states have call successors, (2406), 655 states have call predecessors, (2406), 813 states have return successors, (3291), 2363 states have call predecessors, (3291), 2394 states have call successors, (3291) [2024-12-02 07:35:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14242 states to 14242 states and 23603 transitions. [2024-12-02 07:35:44,185 INFO L78 Accepts]: Start accepts. Automaton has 14242 states and 23603 transitions. Word has length 531 [2024-12-02 07:35:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:44,185 INFO L471 AbstractCegarLoop]: Abstraction has 14242 states and 23603 transitions. [2024-12-02 07:35:44,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-12-02 07:35:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 14242 states and 23603 transitions. [2024-12-02 07:35:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-12-02 07:35:44,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:44,203 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 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] [2024-12-02 07:35:44,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 07:35:44,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:44,403 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:44,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 881149579, now seen corresponding path program 1 times [2024-12-02 07:35:44,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:44,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537025571] [2024-12-02 07:35:44,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-12-02 07:35:44,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537025571] [2024-12-02 07:35:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537025571] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961915040] [2024-12-02 07:35:44,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:44,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:44,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:44,934 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:44,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 07:35:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:45,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 4022 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:35:45,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-12-02 07:35:45,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961915040] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:45,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 07:35:45,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886713951] [2024-12-02 07:35:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:45,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:45,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:45,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:45,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:35:45,563 INFO L87 Difference]: Start difference. First operand 14242 states and 23603 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-12-02 07:35:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:46,128 INFO L93 Difference]: Finished difference Result 28577 states and 47885 transitions. [2024-12-02 07:35:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 532 [2024-12-02 07:35:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:46,186 INFO L225 Difference]: With dead ends: 28577 [2024-12-02 07:35:46,186 INFO L226 Difference]: Without dead ends: 14377 [2024-12-02 07:35:46,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:35:46,229 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 22 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:46,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2562 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14377 states. [2024-12-02 07:35:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14377 to 14377. [2024-12-02 07:35:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14377 states, 11142 states have (on average 1.625919942559684) internal successors, (18116), 11599 states have internal predecessors, (18116), 2406 states have call successors, (2406), 670 states have call predecessors, (2406), 828 states have return successors, (3291), 2363 states have call predecessors, (3291), 2394 states have call successors, (3291) [2024-12-02 07:35:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14377 states to 14377 states and 23813 transitions. [2024-12-02 07:35:46,799 INFO L78 Accepts]: Start accepts. Automaton has 14377 states and 23813 transitions. Word has length 532 [2024-12-02 07:35:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:46,800 INFO L471 AbstractCegarLoop]: Abstraction has 14377 states and 23813 transitions. [2024-12-02 07:35:46,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-12-02 07:35:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 14377 states and 23813 transitions. [2024-12-02 07:35:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-12-02 07:35:46,809 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:46,810 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:46,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 07:35:47,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:47,010 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:47,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -203473127, now seen corresponding path program 1 times [2024-12-02 07:35:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322882840] [2024-12-02 07:35:47,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-12-02 07:35:47,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322882840] [2024-12-02 07:35:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322882840] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634191417] [2024-12-02 07:35:47,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:47,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:47,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:47,608 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:47,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 07:35:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:48,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 4023 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:35:48,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2024-12-02 07:35:48,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:48,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634191417] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:48,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:48,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 07:35:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134897973] [2024-12-02 07:35:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:48,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:48,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:48,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:48,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:35:48,249 INFO L87 Difference]: Start difference. First operand 14377 states and 23813 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-12-02 07:35:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:48,793 INFO L93 Difference]: Finished difference Result 28847 states and 48245 transitions. [2024-12-02 07:35:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:35:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 533 [2024-12-02 07:35:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:48,872 INFO L225 Difference]: With dead ends: 28847 [2024-12-02 07:35:48,872 INFO L226 Difference]: Without dead ends: 14512 [2024-12-02 07:35:48,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:35:48,921 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 20 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:48,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2556 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:35:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14512 states. [2024-12-02 07:35:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14512 to 14512. [2024-12-02 07:35:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14512 states, 11262 states have (on average 1.6272420529213283) internal successors, (18326), 11719 states have internal predecessors, (18326), 2406 states have call successors, (2406), 685 states have call predecessors, (2406), 843 states have return successors, (3291), 2363 states have call predecessors, (3291), 2394 states have call successors, (3291) [2024-12-02 07:35:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14512 states to 14512 states and 24023 transitions. [2024-12-02 07:35:49,575 INFO L78 Accepts]: Start accepts. Automaton has 14512 states and 24023 transitions. Word has length 533 [2024-12-02 07:35:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:49,576 INFO L471 AbstractCegarLoop]: Abstraction has 14512 states and 24023 transitions. [2024-12-02 07:35:49,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-12-02 07:35:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 14512 states and 24023 transitions. [2024-12-02 07:35:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 07:35:49,593 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:49,594 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:49,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 07:35:49,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 07:35:49,795 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:49,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1792985423, now seen corresponding path program 1 times [2024-12-02 07:35:49,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:49,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431474224] [2024-12-02 07:35:49,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-12-02 07:35:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:50,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431474224] [2024-12-02 07:35:50,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431474224] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:50,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139663743] [2024-12-02 07:35:50,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:50,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:50,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:50,319 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:50,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 07:35:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:50,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 4024 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:35:50,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 677 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-12-02 07:35:51,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:51,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139663743] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:51,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:51,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-12-02 07:35:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222786470] [2024-12-02 07:35:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:51,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:35:51,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:51,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:35:51,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:35:51,330 INFO L87 Difference]: Start difference. First operand 14512 states and 24023 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) [2024-12-02 07:35:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:57,314 INFO L93 Difference]: Finished difference Result 50659 states and 86239 transitions. [2024-12-02 07:35:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 07:35:57,315 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 534 [2024-12-02 07:35:57,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:57,464 INFO L225 Difference]: With dead ends: 50659 [2024-12-02 07:35:57,464 INFO L226 Difference]: Without dead ends: 36152 [2024-12-02 07:35:57,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:35:57,531 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 2352 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 7823 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 8417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 7823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:57,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2529 Valid, 2499 Invalid, 8417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 7823 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 07:35:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36152 states. [2024-12-02 07:35:58,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36152 to 35076. [2024-12-02 07:35:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35076 states, 27522 states have (on average 1.6249182472204056) internal successors, (44721), 28510 states have internal predecessors, (44721), 5523 states have call successors, (5523), 1741 states have call predecessors, (5523), 2030 states have return successors, (8298), 5444 states have call predecessors, (8298), 5494 states have call successors, (8298) [2024-12-02 07:35:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35076 states to 35076 states and 58542 transitions. [2024-12-02 07:35:59,121 INFO L78 Accepts]: Start accepts. Automaton has 35076 states and 58542 transitions. Word has length 534 [2024-12-02 07:35:59,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:59,122 INFO L471 AbstractCegarLoop]: Abstraction has 35076 states and 58542 transitions. [2024-12-02 07:35:59,122 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) [2024-12-02 07:35:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 35076 states and 58542 transitions. [2024-12-02 07:35:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 07:35:59,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:59,150 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:35:59,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 07:35:59,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 07:35:59,351 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:59,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2004392439, now seen corresponding path program 1 times [2024-12-02 07:35:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:59,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925041862] [2024-12-02 07:35:59,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-12-02 07:36:00,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925041862] [2024-12-02 07:36:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925041862] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:36:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399657443] [2024-12-02 07:36:00,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:00,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:36:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:36:00,038 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:36:00,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 07:36:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:00,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 4024 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:36:00,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:36:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2024-12-02 07:36:00,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:36:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399657443] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:36:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 07:36:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542000087] [2024-12-02 07:36:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:00,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:36:00,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:00,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:36:00,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:36:00,697 INFO L87 Difference]: Start difference. First operand 35076 states and 58542 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) [2024-12-02 07:36:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:02,286 INFO L93 Difference]: Finished difference Result 70127 states and 117972 transitions. [2024-12-02 07:36:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:36:02,286 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 534 [2024-12-02 07:36:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:02,443 INFO L225 Difference]: With dead ends: 70127 [2024-12-02 07:36:02,443 INFO L226 Difference]: Without dead ends: 35512 [2024-12-02 07:36:02,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:36:02,562 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 18 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2550 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 [2024-12-02 07:36:02,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2550 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:36:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35512 states. [2024-12-02 07:36:03,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35512 to 35454. [2024-12-02 07:36:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35454 states, 27858 states have (on average 1.6263550865101586) internal successors, (45307), 28846 states have internal predecessors, (45307), 5523 states have call successors, (5523), 1783 states have call predecessors, (5523), 2072 states have return successors, (7998), 5444 states have call predecessors, (7998), 5494 states have call successors, (7998) [2024-12-02 07:36:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35454 states to 35454 states and 58828 transitions. [2024-12-02 07:36:04,059 INFO L78 Accepts]: Start accepts. Automaton has 35454 states and 58828 transitions. Word has length 534 [2024-12-02 07:36:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:04,059 INFO L471 AbstractCegarLoop]: Abstraction has 35454 states and 58828 transitions. [2024-12-02 07:36:04,059 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) [2024-12-02 07:36:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 35454 states and 58828 transitions. [2024-12-02 07:36:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-12-02 07:36:04,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:04,077 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:04,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 07:36:04,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 07:36:04,278 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:04,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1917596743, now seen corresponding path program 1 times [2024-12-02 07:36:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:04,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912028611] [2024-12-02 07:36:04,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-12-02 07:36:04,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:04,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912028611] [2024-12-02 07:36:04,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912028611] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:36:04,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746962093] [2024-12-02 07:36:04,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:04,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:36:04,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:36:04,697 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:36:04,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 07:36:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:05,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 4023 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:36:05,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:36:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 739 proven. 260 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2024-12-02 07:36:05,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:36:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 133 proven. 36 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2024-12-02 07:36:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746962093] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:36:06,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:36:06,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 16 [2024-12-02 07:36:06,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973907966] [2024-12-02 07:36:06,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:36:06,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:36:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:06,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:36:06,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:36:06,195 INFO L87 Difference]: Start difference. First operand 35454 states and 58828 transitions. Second operand has 16 states, 16 states have (on average 27.25) internal successors, (436), 14 states have internal predecessors, (436), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) [2024-12-02 07:36:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:31,704 INFO L93 Difference]: Finished difference Result 231636 states and 420898 transitions. [2024-12-02 07:36:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-12-02 07:36:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 27.25) internal successors, (436), 14 states have internal predecessors, (436), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) Word has length 533 [2024-12-02 07:36:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:32,795 INFO L225 Difference]: With dead ends: 231636 [2024-12-02 07:36:32,795 INFO L226 Difference]: Without dead ends: 196206 [2024-12-02 07:36:33,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1153 GetRequests, 1087 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=654, Invalid=3768, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 07:36:33,152 INFO L435 NwaCegarLoop]: 1419 mSDtfsCounter, 12523 mSDsluCounter, 8718 mSDsCounter, 0 mSdLazyCounter, 30362 mSolverCounterSat, 5132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12523 SdHoareTripleChecker+Valid, 10137 SdHoareTripleChecker+Invalid, 35494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5132 IncrementalHoareTripleChecker+Valid, 30362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:33,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12523 Valid, 10137 Invalid, 35494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5132 Valid, 30362 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2024-12-02 07:36:33,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196206 states. [2024-12-02 07:36:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196206 to 162662. [2024-12-02 07:36:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162662 states, 121876 states have (on average 1.5994371328235255) internal successors, (194933), 128707 states have internal predecessors, (194933), 31028 states have call successors, (31028), 6877 states have call predecessors, (31028), 9757 states have return successors, (54309), 31803 states have call predecessors, (54309), 30979 states have call successors, (54309) [2024-12-02 07:36:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162662 states to 162662 states and 280270 transitions. [2024-12-02 07:36:44,956 INFO L78 Accepts]: Start accepts. Automaton has 162662 states and 280270 transitions. Word has length 533 [2024-12-02 07:36:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:44,956 INFO L471 AbstractCegarLoop]: Abstraction has 162662 states and 280270 transitions. [2024-12-02 07:36:44,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.25) internal successors, (436), 14 states have internal predecessors, (436), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) [2024-12-02 07:36:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 162662 states and 280270 transitions. [2024-12-02 07:36:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2024-12-02 07:36:44,972 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:44,972 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:45,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 07:36:45,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 07:36:45,172 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:45,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1814323238, now seen corresponding path program 1 times [2024-12-02 07:36:45,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:45,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767847019] [2024-12-02 07:36:45,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:45,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 29 proven. 140 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2024-12-02 07:36:45,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:45,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767847019] [2024-12-02 07:36:45,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767847019] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:36:45,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339660222] [2024-12-02 07:36:45,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:45,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:36:45,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:36:45,642 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:36:45,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 07:36:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:46,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 4111 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:36:46,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:36:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 677 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2024-12-02 07:36:46,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:36:46,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339660222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:46,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:36:46,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-12-02 07:36:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851111122] [2024-12-02 07:36:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:46,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:46,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:46,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:46,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:36:46,267 INFO L87 Difference]: Start difference. First operand 162662 states and 280270 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:37:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:37:04,367 INFO L93 Difference]: Finished difference Result 439967 states and 788611 transitions. [2024-12-02 07:37:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:37:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 558 [2024-12-02 07:37:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:37:06,153 INFO L225 Difference]: With dead ends: 439967 [2024-12-02 07:37:06,153 INFO L226 Difference]: Without dead ends: 302204 [2024-12-02 07:37:07,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:37:07,403 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 845 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:37:07,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2534 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:37:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302204 states. [2024-12-02 07:37:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302204 to 302202. [2024-12-02 07:37:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302202 states, 225419 states have (on average 1.5969416952430806) internal successors, (359981), 238485 states have internal predecessors, (359981), 58843 states have call successors, (58843), 12587 states have call predecessors, (58843), 17939 states have return successors, (123001), 60581 states have call predecessors, (123001), 58754 states have call successors, (123001) [2024-12-02 07:37:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302202 states to 302202 states and 541825 transitions. [2024-12-02 07:37:26,909 INFO L78 Accepts]: Start accepts. Automaton has 302202 states and 541825 transitions. Word has length 558 [2024-12-02 07:37:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:37:26,909 INFO L471 AbstractCegarLoop]: Abstraction has 302202 states and 541825 transitions. [2024-12-02 07:37:26,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:37:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 302202 states and 541825 transitions. [2024-12-02 07:37:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2024-12-02 07:37:26,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:37:26,935 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:37:26,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 07:37:27,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 07:37:27,136 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:37:27,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash -317134178, now seen corresponding path program 1 times [2024-12-02 07:37:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28779481] [2024-12-02 07:37:27,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 29 proven. 140 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2024-12-02 07:37:27,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28779481] [2024-12-02 07:37:27,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28779481] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293056547] [2024-12-02 07:37:27,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:27,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:27,694 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:27,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 07:37:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:28,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 4113 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:37:28,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:37:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 669 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-12-02 07:37:28,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:37:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293056547] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:37:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:37:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 07:37:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216023263] [2024-12-02 07:37:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:37:28,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:37:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:28,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:37:28,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:37:28,300 INFO L87 Difference]: Start difference. First operand 302202 states and 541825 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:37:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:37:50,383 INFO L93 Difference]: Finished difference Result 606509 states and 1115142 transitions. [2024-12-02 07:37:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:37:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 560 [2024-12-02 07:37:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:37:52,658 INFO L225 Difference]: With dead ends: 606509 [2024-12-02 07:37:52,659 INFO L226 Difference]: Without dead ends: 304812 [2024-12-02 07:37:55,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:37:55,951 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 16 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:37:55,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2544 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:37:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304812 states. [2024-12-02 07:38:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304812 to 304812. [2024-12-02 07:38:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304812 states, 227739 states have (on average 1.5984306596586444) internal successors, (364025), 240805 states have internal predecessors, (364025), 58843 states have call successors, (58843), 12877 states have call predecessors, (58843), 18229 states have return successors, (123001), 60581 states have call predecessors, (123001), 58754 states have call successors, (123001) [2024-12-02 07:38:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304812 states to 304812 states and 545869 transitions. [2024-12-02 07:38:15,140 INFO L78 Accepts]: Start accepts. Automaton has 304812 states and 545869 transitions. Word has length 560 [2024-12-02 07:38:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:38:15,140 INFO L471 AbstractCegarLoop]: Abstraction has 304812 states and 545869 transitions. [2024-12-02 07:38:15,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:38:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 304812 states and 545869 transitions. [2024-12-02 07:38:15,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2024-12-02 07:38:15,165 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:38:15,166 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:38:15,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 07:38:15,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 07:38:15,366 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:38:15,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:38:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash 175855966, now seen corresponding path program 1 times [2024-12-02 07:38:15,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:38:15,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904180578] [2024-12-02 07:38:15,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:38:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:38:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:38:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 29 proven. 140 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2024-12-02 07:38:15,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:38:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904180578] [2024-12-02 07:38:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904180578] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:38:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383158171] [2024-12-02 07:38:15,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:38:15,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:38:15,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:38:15,773 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:38:15,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77ee3a6-f086-4179-9d5e-566d6f0b0ec9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 07:38:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:38:16,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 4113 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:38:16,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:38:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2024-12-02 07:38:16,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:38:16,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383158171] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:38:16,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:38:16,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-12-02 07:38:16,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167171550] [2024-12-02 07:38:16,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:38:16,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:38:16,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:38:16,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:38:16,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:38:16,907 INFO L87 Difference]: Start difference. First operand 304812 states and 545869 transitions. Second operand has 9 states, 9 states have (on average 25.77777777777778) internal successors, (232), 8 states have internal predecessors, (232), 6 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41)