./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product23.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_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/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_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/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_6c384073-7ada-4622-90d0-991b71e204c0/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 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:20:19,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:20:19,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:20:19,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:20:19,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:20:19,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:20:19,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:20:19,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:20:19,798 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:20:19,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:20:19,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:20:19,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:20:19,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:20:19,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:20:19,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:20:19,800 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:20:19,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:20:19,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:20:19,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:20:19,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:20:19,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:20:19,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:20:19,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:20:19,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:20:19,802 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_6c384073-7ada-4622-90d0-991b71e204c0/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 -> 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f [2024-12-02 10:20:19,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:20:19,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:20:19,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:20:19,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:20:19,999 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:20:20,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2024-12-02 10:20:22,602 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/data/58a3a1578/043b0728e8bd4becbee54f8855f997a8/FLAGcb8461684 [2024-12-02 10:20:22,900 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:20:22,901 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2024-12-02 10:20:22,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/data/58a3a1578/043b0728e8bd4becbee54f8855f997a8/FLAGcb8461684 [2024-12-02 10:20:23,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/data/58a3a1578/043b0728e8bd4becbee54f8855f997a8 [2024-12-02 10:20:23,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:20:23,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:20:23,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:20:23,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:20:23,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:20:23,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac3fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23, skipping insertion in model container [2024-12-02 10:20:23,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:20:23,420 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_6c384073-7ada-4622-90d0-991b71e204c0/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2024-12-02 10:20:23,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:20:23,631 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:20:23,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-12-02 10:20:23,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [408] [2024-12-02 10:20:23,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [503] [2024-12-02 10:20:23,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [544] [2024-12-02 10:20:23,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [553] [2024-12-02 10:20:23,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [919] [2024-12-02 10:20:23,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1586] [2024-12-02 10:20:23,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3177] [2024-12-02 10:20:23,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3295] [2024-12-02 10:20:23,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3330] [2024-12-02 10:20:23,659 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_6c384073-7ada-4622-90d0-991b71e204c0/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2024-12-02 10:20:23,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:20:23,759 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:20:23,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23 WrapperNode [2024-12-02 10:20:23,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:20:23,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:20:23,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:20:23,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:20:23,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,827 INFO L138 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 852 [2024-12-02 10:20:23,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:20:23,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:20:23,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:20:23,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:20:23,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,869 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 10:20:23,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,888 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:20:23,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:20:23,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:20:23,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:20:23,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (1/1) ... [2024-12-02 10:20:23,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:20:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:23,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:20:23,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:20:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:20:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 10:20:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 10:20:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 10:20:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 10:20:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 10:20:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 10:20:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 10:20:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 10:20:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 10:20:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 10:20:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 10:20:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 10:20:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 10:20:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 10:20:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 10:20:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 10:20:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 10:20:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 10:20:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 10:20:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 10:20:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 10:20:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 10:20:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 10:20:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 10:20:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 10:20:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 10:20:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 10:20:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 10:20:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 10:20:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 10:20:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:20:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 10:20:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 10:20:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 10:20:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 10:20:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 10:20:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 10:20:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 10:20:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 10:20:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 10:20:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 10:20:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 10:20:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 10:20:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:20:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:20:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 10:20:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 10:20:24,172 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:20:24,174 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:20:25,366 INFO L? ?]: Removed 462 outVars from TransFormulas that were not future-live. [2024-12-02 10:20:25,366 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:20:25,388 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:20:25,388 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:20:25,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:20:25 BoogieIcfgContainer [2024-12-02 10:20:25,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:20:25,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:20:25,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:20:25,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:20:25,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:20:23" (1/3) ... [2024-12-02 10:20:25,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4544b335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:20:25, skipping insertion in model container [2024-12-02 10:20:25,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:20:23" (2/3) ... [2024-12-02 10:20:25,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4544b335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:20:25, skipping insertion in model container [2024-12-02 10:20:25,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:20:25" (3/3) ... [2024-12-02 10:20:25,398 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2024-12-02 10:20:25,415 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:20:25,418 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product23.cil.c that has 26 procedures, 558 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:20:25,489 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:20:25,502 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;@5cfc6630, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:20:25,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:20:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 558 states, 432 states have (on average 1.6666666666666667) internal successors, (720), 448 states have internal predecessors, (720), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:20:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 10:20:25,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:25,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:25,536 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:25,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -410612230, now seen corresponding path program 1 times [2024-12-02 10:20:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039802810] [2024-12-02 10:20:25,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:26,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:26,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039802810] [2024-12-02 10:20:26,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039802810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:26,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:26,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:26,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650029401] [2024-12-02 10:20:26,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:26,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:26,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:26,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:26,097 INFO L87 Difference]: Start difference. First operand has 558 states, 432 states have (on average 1.6666666666666667) internal successors, (720), 448 states have internal predecessors, (720), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:26,278 INFO L93 Difference]: Finished difference Result 1109 states and 1836 transitions. [2024-12-02 10:20:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2024-12-02 10:20:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:26,292 INFO L225 Difference]: With dead ends: 1109 [2024-12-02 10:20:26,292 INFO L226 Difference]: Without dead ends: 553 [2024-12-02 10:20:26,299 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 10:20:26,301 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 6 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2697 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 10:20:26,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2697 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-12-02 10:20:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-12-02 10:20:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 428 states have (on average 1.6565420560747663) internal successors, (709), 443 states have internal predecessors, (709), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 906 transitions. [2024-12-02 10:20:26,371 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 906 transitions. Word has length 103 [2024-12-02 10:20:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:26,372 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 906 transitions. [2024-12-02 10:20:26,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 906 transitions. [2024-12-02 10:20:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 10:20:26,379 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:26,379 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:26,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:20:26,379 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:26,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1102378266, now seen corresponding path program 1 times [2024-12-02 10:20:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:26,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818395200] [2024-12-02 10:20:26,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:26,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:26,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818395200] [2024-12-02 10:20:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818395200] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053941580] [2024-12-02 10:20:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:26,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:26,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:26,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:26,572 INFO L87 Difference]: Start difference. First operand 553 states and 906 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:26,665 INFO L93 Difference]: Finished difference Result 1089 states and 1789 transitions. [2024-12-02 10:20:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:20:26,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-12-02 10:20:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:26,670 INFO L225 Difference]: With dead ends: 1089 [2024-12-02 10:20:26,670 INFO L226 Difference]: Without dead ends: 553 [2024-12-02 10:20:26,673 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 10:20:26,674 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 4 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2669 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 10:20:26,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2669 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-12-02 10:20:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-12-02 10:20:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 428 states have (on average 1.6542056074766356) internal successors, (708), 443 states have internal predecessors, (708), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 905 transitions. [2024-12-02 10:20:26,706 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 905 transitions. Word has length 104 [2024-12-02 10:20:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:26,706 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 905 transitions. [2024-12-02 10:20:26,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 905 transitions. [2024-12-02 10:20:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:20:26,711 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:26,711 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:26,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:20:26,711 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:26,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1129289482, now seen corresponding path program 1 times [2024-12-02 10:20:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441334610] [2024-12-02 10:20:26,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:26,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:26,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441334610] [2024-12-02 10:20:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441334610] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:26,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:26,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834216157] [2024-12-02 10:20:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:26,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:26,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:26,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:26,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:26,879 INFO L87 Difference]: Start difference. First operand 553 states and 905 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:26,951 INFO L93 Difference]: Finished difference Result 1089 states and 1788 transitions. [2024-12-02 10:20:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:20:26,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-12-02 10:20:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:26,957 INFO L225 Difference]: With dead ends: 1089 [2024-12-02 10:20:26,957 INFO L226 Difference]: Without dead ends: 553 [2024-12-02 10:20:26,961 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 10:20:26,962 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 3 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2669 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 10:20:26,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2669 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-12-02 10:20:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-12-02 10:20:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 428 states have (on average 1.6518691588785046) internal successors, (707), 443 states have internal predecessors, (707), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 904 transitions. [2024-12-02 10:20:26,999 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 904 transitions. Word has length 105 [2024-12-02 10:20:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:26,999 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 904 transitions. [2024-12-02 10:20:26,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 904 transitions. [2024-12-02 10:20:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 10:20:27,004 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:27,004 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:27,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:20:27,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:27,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2020537758, now seen corresponding path program 1 times [2024-12-02 10:20:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651002975] [2024-12-02 10:20:27,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:27,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:27,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651002975] [2024-12-02 10:20:27,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651002975] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:27,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:27,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:27,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613070054] [2024-12-02 10:20:27,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:27,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:27,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:27,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:27,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:27,161 INFO L87 Difference]: Start difference. First operand 553 states and 904 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:27,240 INFO L93 Difference]: Finished difference Result 1089 states and 1787 transitions. [2024-12-02 10:20:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:20:27,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-12-02 10:20:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:27,245 INFO L225 Difference]: With dead ends: 1089 [2024-12-02 10:20:27,245 INFO L226 Difference]: Without dead ends: 553 [2024-12-02 10:20:27,248 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 10:20:27,249 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 2 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2669 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 10:20:27,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2669 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:27,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-12-02 10:20:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-12-02 10:20:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 428 states have (on average 1.6495327102803738) internal successors, (706), 443 states have internal predecessors, (706), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 903 transitions. [2024-12-02 10:20:27,277 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 903 transitions. Word has length 106 [2024-12-02 10:20:27,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:27,277 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 903 transitions. [2024-12-02 10:20:27,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 903 transitions. [2024-12-02 10:20:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 10:20:27,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:27,281 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:27,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:20:27,281 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:27,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:27,282 INFO L85 PathProgramCache]: Analyzing trace with hash 358536178, now seen corresponding path program 1 times [2024-12-02 10:20:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413450398] [2024-12-02 10:20:27,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:27,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:27,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413450398] [2024-12-02 10:20:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413450398] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:27,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552093980] [2024-12-02 10:20:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:27,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:27,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:27,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:27,420 INFO L87 Difference]: Start difference. First operand 553 states and 903 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:27,478 INFO L93 Difference]: Finished difference Result 1089 states and 1786 transitions. [2024-12-02 10:20:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:20:27,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-12-02 10:20:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:27,483 INFO L225 Difference]: With dead ends: 1089 [2024-12-02 10:20:27,483 INFO L226 Difference]: Without dead ends: 553 [2024-12-02 10:20:27,486 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 10:20:27,487 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 1 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2669 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 10:20:27,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2669 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-12-02 10:20:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-12-02 10:20:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 428 states have (on average 1.647196261682243) internal successors, (705), 443 states have internal predecessors, (705), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 902 transitions. [2024-12-02 10:20:27,513 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 902 transitions. Word has length 107 [2024-12-02 10:20:27,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:27,513 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 902 transitions. [2024-12-02 10:20:27,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 902 transitions. [2024-12-02 10:20:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:20:27,525 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:27,525 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:27,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:20:27,526 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:27,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1038383582, now seen corresponding path program 1 times [2024-12-02 10:20:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:27,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279423937] [2024-12-02 10:20:27,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:27,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279423937] [2024-12-02 10:20:27,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279423937] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:27,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:27,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:20:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882950680] [2024-12-02 10:20:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:27,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:20:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:27,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:20:27,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:20:27,727 INFO L87 Difference]: Start difference. First operand 553 states and 902 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 10:20:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:27,838 INFO L93 Difference]: Finished difference Result 1100 states and 1803 transitions. [2024-12-02 10:20:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:20:27,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-12-02 10:20:27,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:27,844 INFO L225 Difference]: With dead ends: 1100 [2024-12-02 10:20:27,844 INFO L226 Difference]: Without dead ends: 568 [2024-12-02 10:20:27,847 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 10:20:27,847 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 91 mSDsluCounter, 4360 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5249 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:27,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5249 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:27,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-12-02 10:20:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 566. [2024-12-02 10:20:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 438 states have (on average 1.643835616438356) internal successors, (720), 455 states have internal predecessors, (720), 100 states have call successors, (100), 26 states have call predecessors, (100), 27 states have return successors, (102), 97 states have call predecessors, (102), 99 states have call successors, (102) [2024-12-02 10:20:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 922 transitions. [2024-12-02 10:20:27,874 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 922 transitions. Word has length 108 [2024-12-02 10:20:27,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:27,875 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 922 transitions. [2024-12-02 10:20:27,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 10:20:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 922 transitions. [2024-12-02 10:20:27,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:20:27,878 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:27,878 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:27,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:20:27,879 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:27,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1024133437, now seen corresponding path program 1 times [2024-12-02 10:20:27,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:27,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939215274] [2024-12-02 10:20:27,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:27,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:27,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:27,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939215274] [2024-12-02 10:20:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939215274] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:27,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:27,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:27,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013320356] [2024-12-02 10:20:27,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:27,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:27,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:27,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:27,988 INFO L87 Difference]: Start difference. First operand 566 states and 922 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:28,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:28,056 INFO L93 Difference]: Finished difference Result 1107 states and 1814 transitions. [2024-12-02 10:20:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:28,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-12-02 10:20:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:28,061 INFO L225 Difference]: With dead ends: 1107 [2024-12-02 10:20:28,062 INFO L226 Difference]: Without dead ends: 562 [2024-12-02 10:20:28,065 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 10:20:28,065 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 1 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2664 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 10:20:28,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2664 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-12-02 10:20:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-12-02 10:20:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.6444954128440368) internal successors, (717), 452 states have internal predecessors, (717), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2024-12-02 10:20:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 915 transitions. [2024-12-02 10:20:28,091 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 915 transitions. Word has length 108 [2024-12-02 10:20:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:28,092 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 915 transitions. [2024-12-02 10:20:28,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 915 transitions. [2024-12-02 10:20:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 10:20:28,095 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:28,095 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:28,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:20:28,096 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:28,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1458594970, now seen corresponding path program 1 times [2024-12-02 10:20:28,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:28,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452666908] [2024-12-02 10:20:28,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:28,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:28,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452666908] [2024-12-02 10:20:28,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452666908] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:28,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:28,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:20:28,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418218260] [2024-12-02 10:20:28,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:28,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:20:28,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:28,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:20:28,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:20:28,270 INFO L87 Difference]: Start difference. First operand 562 states and 915 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:28,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:28,570 INFO L93 Difference]: Finished difference Result 1150 states and 1886 transitions. [2024-12-02 10:20:28,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:20:28,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-12-02 10:20:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:28,577 INFO L225 Difference]: With dead ends: 1150 [2024-12-02 10:20:28,577 INFO L226 Difference]: Without dead ends: 594 [2024-12-02 10:20:28,581 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 10:20:28,582 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 72 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4241 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 10:20:28,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4241 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:20:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-12-02 10:20:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 567. [2024-12-02 10:20:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 441 states have (on average 1.6303854875283448) internal successors, (719), 456 states have internal predecessors, (719), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 916 transitions. [2024-12-02 10:20:28,611 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 916 transitions. Word has length 109 [2024-12-02 10:20:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:28,611 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 916 transitions. [2024-12-02 10:20:28,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:28,612 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 916 transitions. [2024-12-02 10:20:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 10:20:28,615 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:28,615 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:28,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:20:28,616 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:28,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1930001471, now seen corresponding path program 1 times [2024-12-02 10:20:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41201665] [2024-12-02 10:20:28,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:28,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:28,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41201665] [2024-12-02 10:20:28,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41201665] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:28,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:28,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:20:28,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924851104] [2024-12-02 10:20:28,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:28,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:20:28,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:28,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:20:28,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:20:28,781 INFO L87 Difference]: Start difference. First operand 567 states and 916 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:28,998 INFO L93 Difference]: Finished difference Result 1101 states and 1781 transitions. [2024-12-02 10:20:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-12-02 10:20:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:29,004 INFO L225 Difference]: With dead ends: 1101 [2024-12-02 10:20:29,004 INFO L226 Difference]: Without dead ends: 585 [2024-12-02 10:20:29,007 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 10:20:29,008 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 56 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4218 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 10:20:29,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4218 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:20:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-12-02 10:20:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 567. [2024-12-02 10:20:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 441 states have (on average 1.6213151927437641) internal successors, (715), 456 states have internal predecessors, (715), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 912 transitions. [2024-12-02 10:20:29,035 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 912 transitions. Word has length 110 [2024-12-02 10:20:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:29,036 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 912 transitions. [2024-12-02 10:20:29,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 912 transitions. [2024-12-02 10:20:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 10:20:29,040 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:29,040 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:29,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:20:29,040 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:29,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1114977717, now seen corresponding path program 1 times [2024-12-02 10:20:29,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:29,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133095497] [2024-12-02 10:20:29,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:29,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133095497] [2024-12-02 10:20:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133095497] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:29,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:29,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:20:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102113628] [2024-12-02 10:20:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:29,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:20:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:29,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:20:29,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:20:29,222 INFO L87 Difference]: Start difference. First operand 567 states and 912 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:29,441 INFO L93 Difference]: Finished difference Result 1101 states and 1777 transitions. [2024-12-02 10:20:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:29,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-12-02 10:20:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:29,447 INFO L225 Difference]: With dead ends: 1101 [2024-12-02 10:20:29,447 INFO L226 Difference]: Without dead ends: 585 [2024-12-02 10:20:29,450 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 10:20:29,451 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 55 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:29,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4213 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:20:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-12-02 10:20:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 567. [2024-12-02 10:20:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 441 states have (on average 1.6122448979591837) internal successors, (711), 456 states have internal predecessors, (711), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 908 transitions. [2024-12-02 10:20:29,474 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 908 transitions. Word has length 111 [2024-12-02 10:20:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:29,475 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 908 transitions. [2024-12-02 10:20:29,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 908 transitions. [2024-12-02 10:20:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 10:20:29,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:29,478 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:29,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:20:29,479 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:29,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash -635730229, now seen corresponding path program 1 times [2024-12-02 10:20:29,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539040722] [2024-12-02 10:20:29,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:29,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539040722] [2024-12-02 10:20:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539040722] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:29,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:29,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:20:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557238828] [2024-12-02 10:20:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:29,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:20:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:29,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:20:29,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:20:29,647 INFO L87 Difference]: Start difference. First operand 567 states and 908 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 10:20:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:29,741 INFO L93 Difference]: Finished difference Result 1092 states and 1759 transitions. [2024-12-02 10:20:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:20:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-12-02 10:20:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:29,745 INFO L225 Difference]: With dead ends: 1092 [2024-12-02 10:20:29,746 INFO L226 Difference]: Without dead ends: 555 [2024-12-02 10:20:29,748 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 10:20:29,748 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 94 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5172 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 10:20:29,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5172 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-12-02 10:20:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 546. [2024-12-02 10:20:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 420 states have (on average 1.6047619047619048) internal successors, (674), 435 states have internal predecessors, (674), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 871 transitions. [2024-12-02 10:20:29,764 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 871 transitions. Word has length 111 [2024-12-02 10:20:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:29,765 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 871 transitions. [2024-12-02 10:20:29,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 10:20:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 871 transitions. [2024-12-02 10:20:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 10:20:29,767 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:29,767 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:29,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 10:20:29,767 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:29,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash 924678278, now seen corresponding path program 1 times [2024-12-02 10:20:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019698944] [2024-12-02 10:20:29,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019698944] [2024-12-02 10:20:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019698944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:29,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:29,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:20:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354647204] [2024-12-02 10:20:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:29,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:20:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:29,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:20:29,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:20:29,918 INFO L87 Difference]: Start difference. First operand 546 states and 871 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:30,037 INFO L93 Difference]: Finished difference Result 1071 states and 1722 transitions. [2024-12-02 10:20:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-12-02 10:20:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:30,043 INFO L225 Difference]: With dead ends: 1071 [2024-12-02 10:20:30,043 INFO L226 Difference]: Without dead ends: 555 [2024-12-02 10:20:30,046 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 10:20:30,047 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 39 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4218 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 10:20:30,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4218 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-12-02 10:20:30,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 546. [2024-12-02 10:20:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 420 states have (on average 1.6023809523809525) internal successors, (673), 435 states have internal predecessors, (673), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 870 transitions. [2024-12-02 10:20:30,071 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 870 transitions. Word has length 112 [2024-12-02 10:20:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:30,071 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 870 transitions. [2024-12-02 10:20:30,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 870 transitions. [2024-12-02 10:20:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 10:20:30,075 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:30,075 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:30,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:20:30,075 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:30,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2021739216, now seen corresponding path program 1 times [2024-12-02 10:20:30,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:30,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530726763] [2024-12-02 10:20:30,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:30,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:30,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530726763] [2024-12-02 10:20:30,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530726763] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:30,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:30,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:20:30,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195760999] [2024-12-02 10:20:30,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:30,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:20:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:30,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:20:30,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:20:30,223 INFO L87 Difference]: Start difference. First operand 546 states and 870 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:30,330 INFO L93 Difference]: Finished difference Result 1071 states and 1721 transitions. [2024-12-02 10:20:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:30,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-12-02 10:20:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:30,335 INFO L225 Difference]: With dead ends: 1071 [2024-12-02 10:20:30,335 INFO L226 Difference]: Without dead ends: 555 [2024-12-02 10:20:30,339 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 10:20:30,339 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 38 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4218 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 10:20:30,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4218 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-12-02 10:20:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 546. [2024-12-02 10:20:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 420 states have (on average 1.6) internal successors, (672), 435 states have internal predecessors, (672), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 869 transitions. [2024-12-02 10:20:30,363 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 869 transitions. Word has length 113 [2024-12-02 10:20:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:30,363 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 869 transitions. [2024-12-02 10:20:30,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 869 transitions. [2024-12-02 10:20:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 10:20:30,366 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:30,366 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:30,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:20:30,367 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:30,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1253837901, now seen corresponding path program 1 times [2024-12-02 10:20:30,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:30,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148332233] [2024-12-02 10:20:30,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:30,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:30,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:30,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148332233] [2024-12-02 10:20:30,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148332233] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:30,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:30,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:30,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492545528] [2024-12-02 10:20:30,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:30,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:30,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:30,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:30,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:30,470 INFO L87 Difference]: Start difference. First operand 546 states and 869 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:30,543 INFO L93 Difference]: Finished difference Result 1071 states and 1720 transitions. [2024-12-02 10:20:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:30,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-12-02 10:20:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:30,550 INFO L225 Difference]: With dead ends: 1071 [2024-12-02 10:20:30,550 INFO L226 Difference]: Without dead ends: 555 [2024-12-02 10:20:30,553 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 10:20:30,554 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 45 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:30,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2502 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-12-02 10:20:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 546. [2024-12-02 10:20:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 420 states have (on average 1.5976190476190477) internal successors, (671), 435 states have internal predecessors, (671), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 868 transitions. [2024-12-02 10:20:30,586 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 868 transitions. Word has length 114 [2024-12-02 10:20:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:30,587 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 868 transitions. [2024-12-02 10:20:30,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 868 transitions. [2024-12-02 10:20:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 10:20:30,591 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:30,592 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:30,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:20:30,592 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:30,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash -622644917, now seen corresponding path program 1 times [2024-12-02 10:20:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:30,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416760278] [2024-12-02 10:20:30,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:20:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416760278] [2024-12-02 10:20:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416760278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:30,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:30,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:20:30,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256845672] [2024-12-02 10:20:30,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:30,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:30,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:30,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:30,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:20:30,728 INFO L87 Difference]: Start difference. First operand 546 states and 868 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:30,795 INFO L93 Difference]: Finished difference Result 1058 states and 1699 transitions. [2024-12-02 10:20:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:20:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-12-02 10:20:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:30,801 INFO L225 Difference]: With dead ends: 1058 [2024-12-02 10:20:30,801 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 10:20:30,804 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 10:20:30,804 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 15 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:30,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2478 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 10:20:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 10:20:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 422 states have (on average 1.5924170616113744) internal successors, (672), 437 states have internal predecessors, (672), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 10:20:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 869 transitions. [2024-12-02 10:20:30,831 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 869 transitions. Word has length 114 [2024-12-02 10:20:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:30,832 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 869 transitions. [2024-12-02 10:20:30,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:20:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 869 transitions. [2024-12-02 10:20:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 10:20:30,835 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:30,835 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:30,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 10:20:30,836 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:30,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1251410715, now seen corresponding path program 1 times [2024-12-02 10:20:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:30,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269109222] [2024-12-02 10:20:30,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:30,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 10:20:30,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:30,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269109222] [2024-12-02 10:20:30,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269109222] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:30,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634075273] [2024-12-02 10:20:30,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:30,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:30,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:30,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:20:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:31,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:20:31,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 10:20:31,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:31,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634075273] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:31,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:31,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 10:20:31,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533820689] [2024-12-02 10:20:31,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:31,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:31,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:31,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:20:31,494 INFO L87 Difference]: Start difference. First operand 548 states and 869 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:32,157 INFO L93 Difference]: Finished difference Result 1061 states and 1728 transitions. [2024-12-02 10:20:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:32,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2024-12-02 10:20:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:32,162 INFO L225 Difference]: With dead ends: 1061 [2024-12-02 10:20:32,162 INFO L226 Difference]: Without dead ends: 556 [2024-12-02 10:20:32,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:20:32,165 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 810 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:32,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2102 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 10:20:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-12-02 10:20:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2024-12-02 10:20:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 429 states have (on average 1.5944055944055944) internal successors, (684), 444 states have internal predecessors, (684), 99 states have call successors, (99), 28 states have call predecessors, (99), 27 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2024-12-02 10:20:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 882 transitions. [2024-12-02 10:20:32,192 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 882 transitions. Word has length 115 [2024-12-02 10:20:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:32,192 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 882 transitions. [2024-12-02 10:20:32,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 882 transitions. [2024-12-02 10:20:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 10:20:32,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:32,196 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:32,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:20:32,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:20:32,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:32,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:32,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1047324881, now seen corresponding path program 1 times [2024-12-02 10:20:32,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:32,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919528220] [2024-12-02 10:20:32,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:32,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 10:20:32,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:32,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919528220] [2024-12-02 10:20:32,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919528220] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:32,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150251216] [2024-12-02 10:20:32,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:32,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:32,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:32,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:32,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:20:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:32,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:20:32,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 10:20:32,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150251216] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:32,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:32,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 10:20:32,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154175011] [2024-12-02 10:20:32,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:32,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:32,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:32,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:20:32,943 INFO L87 Difference]: Start difference. First operand 556 states and 882 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:33,459 INFO L93 Difference]: Finished difference Result 1077 states and 1751 transitions. [2024-12-02 10:20:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2024-12-02 10:20:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:33,464 INFO L225 Difference]: With dead ends: 1077 [2024-12-02 10:20:33,464 INFO L226 Difference]: Without dead ends: 564 [2024-12-02 10:20:33,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 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 10:20:33,474 INFO L435 NwaCegarLoop]: 827 mSDtfsCounter, 798 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:33,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2099 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 10:20:33,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-12-02 10:20:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-12-02 10:20:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 436 states have (on average 1.5963302752293578) internal successors, (696), 451 states have internal predecessors, (696), 99 states have call successors, (99), 29 states have call predecessors, (99), 28 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-12-02 10:20:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 895 transitions. [2024-12-02 10:20:33,493 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 895 transitions. Word has length 118 [2024-12-02 10:20:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:33,493 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 895 transitions. [2024-12-02 10:20:33,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 895 transitions. [2024-12-02 10:20:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 10:20:33,495 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:33,495 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:33,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:20:33,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:33,696 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:33,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 309452513, now seen corresponding path program 1 times [2024-12-02 10:20:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:33,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144630733] [2024-12-02 10:20:33,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 10:20:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144630733] [2024-12-02 10:20:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144630733] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004032905] [2024-12-02 10:20:33,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:33,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:33,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:33,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:20:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:34,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:20:34,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 10:20:34,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:34,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004032905] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:34,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:34,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 10:20:34,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821440462] [2024-12-02 10:20:34,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:34,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:34,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:34,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:34,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:20:34,172 INFO L87 Difference]: Start difference. First operand 564 states and 895 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:34,695 INFO L93 Difference]: Finished difference Result 1093 states and 1774 transitions. [2024-12-02 10:20:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2024-12-02 10:20:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:34,701 INFO L225 Difference]: With dead ends: 1093 [2024-12-02 10:20:34,701 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 10:20:34,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 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 10:20:34,704 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 800 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:34,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 2096 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 10:20:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 10:20:34,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 10:20:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 443 states have (on average 1.5981941309255079) internal successors, (708), 458 states have internal predecessors, (708), 99 states have call successors, (99), 30 states have call predecessors, (99), 29 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-12-02 10:20:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 908 transitions. [2024-12-02 10:20:34,729 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 908 transitions. Word has length 121 [2024-12-02 10:20:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:34,730 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 908 transitions. [2024-12-02 10:20:34,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 908 transitions. [2024-12-02 10:20:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 10:20:34,733 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:34,733 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:34,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 10:20:34,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:20:34,934 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:34,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1223151557, now seen corresponding path program 1 times [2024-12-02 10:20:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416664747] [2024-12-02 10:20:34,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 10:20:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416664747] [2024-12-02 10:20:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416664747] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904006539] [2024-12-02 10:20:35,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:35,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:35,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:35,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:35,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:20:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:35,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:20:35,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 10:20:35,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:35,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904006539] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:35,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:35,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-12-02 10:20:35,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361937361] [2024-12-02 10:20:35,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:35,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:35,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:35,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:35,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:20:35,474 INFO L87 Difference]: Start difference. First operand 572 states and 908 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:35,979 INFO L93 Difference]: Finished difference Result 1109 states and 1797 transitions. [2024-12-02 10:20:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:35,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-12-02 10:20:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:35,983 INFO L225 Difference]: With dead ends: 1109 [2024-12-02 10:20:35,983 INFO L226 Difference]: Without dead ends: 580 [2024-12-02 10:20:35,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 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 10:20:35,986 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 780 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:35,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 2093 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 10:20:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-12-02 10:20:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2024-12-02 10:20:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 450 states have (on average 1.6) internal successors, (720), 465 states have internal predecessors, (720), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 10:20:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 921 transitions. [2024-12-02 10:20:36,012 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 921 transitions. Word has length 124 [2024-12-02 10:20:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:36,012 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 921 transitions. [2024-12-02 10:20:36,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 921 transitions. [2024-12-02 10:20:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 10:20:36,015 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:36,016 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:36,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:20:36,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:36,216 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:36,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1877001308, now seen corresponding path program 1 times [2024-12-02 10:20:36,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:36,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944832863] [2024-12-02 10:20:36,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 10:20:36,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:36,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944832863] [2024-12-02 10:20:36,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944832863] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:36,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322581136] [2024-12-02 10:20:36,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:36,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:36,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:36,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:20:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:36,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:20:36,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 10:20:36,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:36,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322581136] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:36,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:36,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 10:20:36,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051120897] [2024-12-02 10:20:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:36,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:36,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:36,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:36,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:20:36,698 INFO L87 Difference]: Start difference. First operand 580 states and 921 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:37,163 INFO L93 Difference]: Finished difference Result 1119 states and 1824 transitions. [2024-12-02 10:20:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:20:37,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-12-02 10:20:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:37,168 INFO L225 Difference]: With dead ends: 1119 [2024-12-02 10:20:37,168 INFO L226 Difference]: Without dead ends: 582 [2024-12-02 10:20:37,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:20:37,171 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 776 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:37,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2093 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:20:37,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-12-02 10:20:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2024-12-02 10:20:37,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 451 states have (on average 1.58980044345898) internal successors, (717), 467 states have internal predecessors, (717), 99 states have call successors, (99), 31 states have call predecessors, (99), 31 states have return successors, (103), 96 states have call predecessors, (103), 98 states have call successors, (103) [2024-12-02 10:20:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 919 transitions. [2024-12-02 10:20:37,196 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 919 transitions. Word has length 127 [2024-12-02 10:20:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:37,196 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 919 transitions. [2024-12-02 10:20:37,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 919 transitions. [2024-12-02 10:20:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 10:20:37,200 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:37,200 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:37,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:20:37,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:37,401 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:37,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1321366237, now seen corresponding path program 1 times [2024-12-02 10:20:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699056837] [2024-12-02 10:20:37,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:37,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 10:20:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699056837] [2024-12-02 10:20:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699056837] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587799344] [2024-12-02 10:20:37,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:37,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:37,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:37,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:37,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:20:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:37,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:20:37,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 10:20:37,950 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587799344] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:37,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2024-12-02 10:20:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669117018] [2024-12-02 10:20:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:37,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:20:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:37,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:20:37,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:20:37,952 INFO L87 Difference]: Start difference. First operand 582 states and 919 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:37,994 INFO L93 Difference]: Finished difference Result 1297 states and 2048 transitions. [2024-12-02 10:20:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:20:37,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-12-02 10:20:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:38,000 INFO L225 Difference]: With dead ends: 1297 [2024-12-02 10:20:38,001 INFO L226 Difference]: Without dead ends: 758 [2024-12-02 10:20:38,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 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 10:20:38,004 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 544 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:38,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1388 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-12-02 10:20:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 756. [2024-12-02 10:20:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 585 states have (on average 1.5487179487179488) internal successors, (906), 600 states have internal predecessors, (906), 124 states have call successors, (124), 46 states have call predecessors, (124), 46 states have return successors, (141), 121 states have call predecessors, (141), 122 states have call successors, (141) [2024-12-02 10:20:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1171 transitions. [2024-12-02 10:20:38,049 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1171 transitions. Word has length 127 [2024-12-02 10:20:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:38,050 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1171 transitions. [2024-12-02 10:20:38,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1171 transitions. [2024-12-02 10:20:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 10:20:38,052 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:38,053 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:38,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 10:20:38,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:38,253 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:38,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 642093983, now seen corresponding path program 1 times [2024-12-02 10:20:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569403640] [2024-12-02 10:20:38,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 10:20:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569403640] [2024-12-02 10:20:38,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569403640] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031356537] [2024-12-02 10:20:38,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:38,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:38,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:38,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:38,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:20:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:38,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 10:20:38,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 10:20:38,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:38,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031356537] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:38,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:38,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-12-02 10:20:38,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001604236] [2024-12-02 10:20:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:38,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:38,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:38,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:38,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:20:38,880 INFO L87 Difference]: Start difference. First operand 756 states and 1171 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:39,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:39,282 INFO L93 Difference]: Finished difference Result 2186 states and 3467 transitions. [2024-12-02 10:20:39,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:20:39,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-12-02 10:20:39,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:39,290 INFO L225 Difference]: With dead ends: 2186 [2024-12-02 10:20:39,290 INFO L226 Difference]: Without dead ends: 1474 [2024-12-02 10:20:39,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 10:20:39,294 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 779 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:39,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3434 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:20:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2024-12-02 10:20:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1466. [2024-12-02 10:20:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1133 states have (on average 1.558693733451015) internal successors, (1766), 1164 states have internal predecessors, (1766), 241 states have call successors, (241), 89 states have call predecessors, (241), 91 states have return successors, (300), 236 states have call predecessors, (300), 237 states have call successors, (300) [2024-12-02 10:20:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2307 transitions. [2024-12-02 10:20:39,349 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2307 transitions. Word has length 127 [2024-12-02 10:20:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:39,350 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 2307 transitions. [2024-12-02 10:20:39,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 10:20:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2307 transitions. [2024-12-02 10:20:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-12-02 10:20:39,351 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:39,352 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:39,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:20:39,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:39,552 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:39,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1050528762, now seen corresponding path program 1 times [2024-12-02 10:20:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038759130] [2024-12-02 10:20:39,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 10:20:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038759130] [2024-12-02 10:20:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038759130] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522697635] [2024-12-02 10:20:39,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:39,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:39,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:39,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:39,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:20:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:40,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:20:40,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 10:20:40,083 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522697635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:40,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:40,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-12-02 10:20:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822752243] [2024-12-02 10:20:40,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:40,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:20:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:40,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:20:40,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:20:40,085 INFO L87 Difference]: Start difference. First operand 1466 states and 2307 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 10:20:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:40,197 INFO L93 Difference]: Finished difference Result 3590 states and 5727 transitions. [2024-12-02 10:20:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:20:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-12-02 10:20:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:40,206 INFO L225 Difference]: With dead ends: 3590 [2024-12-02 10:20:40,207 INFO L226 Difference]: Without dead ends: 2170 [2024-12-02 10:20:40,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:20:40,212 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 811 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2445 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 10:20:40,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2445 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2024-12-02 10:20:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 1466. [2024-12-02 10:20:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1133 states have (on average 1.557811120917917) internal successors, (1765), 1164 states have internal predecessors, (1765), 241 states have call successors, (241), 89 states have call predecessors, (241), 91 states have return successors, (300), 236 states have call predecessors, (300), 237 states have call successors, (300) [2024-12-02 10:20:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2306 transitions. [2024-12-02 10:20:40,293 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2306 transitions. Word has length 132 [2024-12-02 10:20:40,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:40,294 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 2306 transitions. [2024-12-02 10:20:40,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 10:20:40,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2306 transitions. [2024-12-02 10:20:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-12-02 10:20:40,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:40,297 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:40,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:20:40,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 10:20:40,497 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:40,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1752128636, now seen corresponding path program 1 times [2024-12-02 10:20:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:40,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981458373] [2024-12-02 10:20:40,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:40,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 10:20:40,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981458373] [2024-12-02 10:20:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981458373] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832890747] [2024-12-02 10:20:40,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:40,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:40,672 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:40,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:20:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:40,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:20:40,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 10:20:41,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:41,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832890747] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:41,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:41,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-12-02 10:20:41,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652401710] [2024-12-02 10:20:41,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:41,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:41,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:41,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:41,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:20:41,081 INFO L87 Difference]: Start difference. First operand 1466 states and 2306 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 10:20:41,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:41,161 INFO L93 Difference]: Finished difference Result 2884 states and 4557 transitions. [2024-12-02 10:20:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:41,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-12-02 10:20:41,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:41,169 INFO L225 Difference]: With dead ends: 2884 [2024-12-02 10:20:41,169 INFO L226 Difference]: Without dead ends: 1466 [2024-12-02 10:20:41,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:20:41,174 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 383 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:41,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 3409 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2024-12-02 10:20:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1466. [2024-12-02 10:20:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1133 states have (on average 1.5542806707855252) internal successors, (1761), 1164 states have internal predecessors, (1761), 241 states have call successors, (241), 89 states have call predecessors, (241), 91 states have return successors, (300), 236 states have call predecessors, (300), 237 states have call successors, (300) [2024-12-02 10:20:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2302 transitions. [2024-12-02 10:20:41,246 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2302 transitions. Word has length 132 [2024-12-02 10:20:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:41,247 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 2302 transitions. [2024-12-02 10:20:41,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 10:20:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2302 transitions. [2024-12-02 10:20:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 10:20:41,252 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:41,252 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:41,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:20:41,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 10:20:41,452 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:41,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash 798313868, now seen corresponding path program 1 times [2024-12-02 10:20:41,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:41,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440422087] [2024-12-02 10:20:41,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:41,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-12-02 10:20:41,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440422087] [2024-12-02 10:20:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440422087] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126379130] [2024-12-02 10:20:41,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:41,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:41,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:41,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:41,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:20:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:41,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:20:41,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 10:20:41,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126379130] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:41,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:41,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 10:20:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488719240] [2024-12-02 10:20:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:41,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:41,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:41,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:41,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:20:41,962 INFO L87 Difference]: Start difference. First operand 1466 states and 2302 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:42,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:42,150 INFO L93 Difference]: Finished difference Result 2977 states and 4737 transitions. [2024-12-02 10:20:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2024-12-02 10:20:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:42,158 INFO L225 Difference]: With dead ends: 2977 [2024-12-02 10:20:42,158 INFO L226 Difference]: Without dead ends: 1556 [2024-12-02 10:20:42,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 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 10:20:42,163 INFO L435 NwaCegarLoop]: 788 mSDtfsCounter, 144 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2341 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 10:20:42,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2341 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2024-12-02 10:20:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1544. [2024-12-02 10:20:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1209 states have (on average 1.5773366418527708) internal successors, (1907), 1240 states have internal predecessors, (1907), 241 states have call successors, (241), 91 states have call predecessors, (241), 93 states have return successors, (300), 236 states have call predecessors, (300), 237 states have call successors, (300) [2024-12-02 10:20:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2448 transitions. [2024-12-02 10:20:42,207 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2448 transitions. Word has length 155 [2024-12-02 10:20:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:42,208 INFO L471 AbstractCegarLoop]: Abstraction has 1544 states and 2448 transitions. [2024-12-02 10:20:42,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2448 transitions. [2024-12-02 10:20:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 10:20:42,210 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:42,210 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:42,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:20:42,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 10:20:42,410 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:42,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash 879064928, now seen corresponding path program 1 times [2024-12-02 10:20:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:42,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874762105] [2024-12-02 10:20:42,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:42,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-12-02 10:20:42,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:42,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874762105] [2024-12-02 10:20:42,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874762105] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:42,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143999348] [2024-12-02 10:20:42,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:42,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:42,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:42,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:42,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:20:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:42,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:20:42,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 10:20:42,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:42,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143999348] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:42,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:42,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 10:20:42,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138490196] [2024-12-02 10:20:42,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:42,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:42,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:42,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:42,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:20:42,895 INFO L87 Difference]: Start difference. First operand 1544 states and 2448 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:43,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:43,090 INFO L93 Difference]: Finished difference Result 3139 states and 5031 transitions. [2024-12-02 10:20:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:43,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2024-12-02 10:20:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:43,098 INFO L225 Difference]: With dead ends: 3139 [2024-12-02 10:20:43,098 INFO L226 Difference]: Without dead ends: 1640 [2024-12-02 10:20:43,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:20:43,104 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 142 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2338 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 10:20:43,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2338 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:43,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-12-02 10:20:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1622. [2024-12-02 10:20:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1285 states have (on average 1.5976653696498055) internal successors, (2053), 1316 states have internal predecessors, (2053), 241 states have call successors, (241), 93 states have call predecessors, (241), 95 states have return successors, (300), 236 states have call predecessors, (300), 237 states have call successors, (300) [2024-12-02 10:20:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2594 transitions. [2024-12-02 10:20:43,148 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2594 transitions. Word has length 160 [2024-12-02 10:20:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:43,148 INFO L471 AbstractCegarLoop]: Abstraction has 1622 states and 2594 transitions. [2024-12-02 10:20:43,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2594 transitions. [2024-12-02 10:20:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 10:20:43,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:43,150 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:43,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:20:43,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 10:20:43,351 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:43,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 185928208, now seen corresponding path program 1 times [2024-12-02 10:20:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139807229] [2024-12-02 10:20:43,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-12-02 10:20:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:43,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139807229] [2024-12-02 10:20:43,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139807229] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:43,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200536754] [2024-12-02 10:20:43,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:43,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:43,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:43,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:20:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:43,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:20:43,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 10:20:43,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:43,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200536754] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:43,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:43,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 10:20:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692188227] [2024-12-02 10:20:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:43,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:43,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:43,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:43,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:20:43,816 INFO L87 Difference]: Start difference. First operand 1622 states and 2594 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:43,990 INFO L93 Difference]: Finished difference Result 3301 states and 5325 transitions. [2024-12-02 10:20:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:43,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2024-12-02 10:20:43,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:43,999 INFO L225 Difference]: With dead ends: 3301 [2024-12-02 10:20:44,000 INFO L226 Difference]: Without dead ends: 1724 [2024-12-02 10:20:44,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 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 10:20:44,005 INFO L435 NwaCegarLoop]: 786 mSDtfsCounter, 140 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:44,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2335 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2024-12-02 10:20:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1700. [2024-12-02 10:20:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1361 states have (on average 1.615723732549596) internal successors, (2199), 1392 states have internal predecessors, (2199), 241 states have call successors, (241), 95 states have call predecessors, (241), 97 states have return successors, (300), 236 states have call predecessors, (300), 237 states have call successors, (300) [2024-12-02 10:20:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2740 transitions. [2024-12-02 10:20:44,065 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2740 transitions. Word has length 164 [2024-12-02 10:20:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:44,065 INFO L471 AbstractCegarLoop]: Abstraction has 1700 states and 2740 transitions. [2024-12-02 10:20:44,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2740 transitions. [2024-12-02 10:20:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 10:20:44,068 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:44,068 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:20:44,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:20:44,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 10:20:44,269 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:44,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash 155729900, now seen corresponding path program 1 times [2024-12-02 10:20:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622685134] [2024-12-02 10:20:44,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:44,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:44,423 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 10:20:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622685134] [2024-12-02 10:20:44,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622685134] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692347472] [2024-12-02 10:20:44,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:44,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:44,425 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:44,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:20:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:44,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:20:44,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 10:20:44,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:44,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692347472] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:44,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:44,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 10:20:44,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648151106] [2024-12-02 10:20:44,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:44,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:20:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:44,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:20:44,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:20:44,711 INFO L87 Difference]: Start difference. First operand 1700 states and 2740 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:44,890 INFO L93 Difference]: Finished difference Result 3463 states and 5619 transitions. [2024-12-02 10:20:44,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:44,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2024-12-02 10:20:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:44,902 INFO L225 Difference]: With dead ends: 3463 [2024-12-02 10:20:44,902 INFO L226 Difference]: Without dead ends: 1808 [2024-12-02 10:20:44,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 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 10:20:44,908 INFO L435 NwaCegarLoop]: 783 mSDtfsCounter, 138 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2325 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 10:20:44,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2325 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:44,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2024-12-02 10:20:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1778. [2024-12-02 10:20:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1437 states have (on average 1.6318719554627696) internal successors, (2345), 1468 states have internal predecessors, (2345), 241 states have call successors, (241), 97 states have call predecessors, (241), 99 states have return successors, (300), 236 states have call predecessors, (300), 237 states have call successors, (300) [2024-12-02 10:20:44,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2886 transitions. [2024-12-02 10:20:44,975 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2886 transitions. Word has length 167 [2024-12-02 10:20:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:44,975 INFO L471 AbstractCegarLoop]: Abstraction has 1778 states and 2886 transitions. [2024-12-02 10:20:44,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2886 transitions. [2024-12-02 10:20:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 10:20:44,977 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:44,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:44,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 10:20:45,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 10:20:45,178 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:45,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1565132966, now seen corresponding path program 1 times [2024-12-02 10:20:45,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:45,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290894202] [2024-12-02 10:20:45,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:45,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-12-02 10:20:45,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290894202] [2024-12-02 10:20:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290894202] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696782890] [2024-12-02 10:20:45,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:45,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:45,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:45,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:45,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 10:20:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:45,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 10:20:45,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-12-02 10:20:45,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:20:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696782890] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:45,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:20:45,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2024-12-02 10:20:45,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588077865] [2024-12-02 10:20:45,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:45,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:20:45,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:45,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:20:45,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:20:45,832 INFO L87 Difference]: Start difference. First operand 1778 states and 2886 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 10:20:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:48,333 INFO L93 Difference]: Finished difference Result 5533 states and 9135 transitions. [2024-12-02 10:20:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:20:48,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 169 [2024-12-02 10:20:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:48,354 INFO L225 Difference]: With dead ends: 5533 [2024-12-02 10:20:48,354 INFO L226 Difference]: Without dead ends: 3436 [2024-12-02 10:20:48,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:20:48,364 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 1933 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:48,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 2199 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 10:20:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2024-12-02 10:20:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3412. [2024-12-02 10:20:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 2713 states have (on average 1.6373018798378178) internal successors, (4442), 2799 states have internal predecessors, (4442), 499 states have call successors, (499), 175 states have call predecessors, (499), 199 states have return successors, (647), 495 states have call predecessors, (647), 495 states have call successors, (647) [2024-12-02 10:20:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5588 transitions. [2024-12-02 10:20:48,521 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5588 transitions. Word has length 169 [2024-12-02 10:20:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:48,521 INFO L471 AbstractCegarLoop]: Abstraction has 3412 states and 5588 transitions. [2024-12-02 10:20:48,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 10:20:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5588 transitions. [2024-12-02 10:20:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 10:20:48,530 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:48,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:48,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 10:20:48,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 10:20:48,731 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:48,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1276501046, now seen corresponding path program 1 times [2024-12-02 10:20:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698514432] [2024-12-02 10:20:48,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-12-02 10:20:48,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698514432] [2024-12-02 10:20:48,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698514432] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:48,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:48,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 10:20:48,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922215552] [2024-12-02 10:20:48,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:48,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:20:48,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:48,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:20:48,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:20:48,866 INFO L87 Difference]: Start difference. First operand 3412 states and 5588 transitions. Second operand has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 10:20:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:49,055 INFO L93 Difference]: Finished difference Result 6650 states and 10917 transitions. [2024-12-02 10:20:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:20:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 172 [2024-12-02 10:20:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:49,069 INFO L225 Difference]: With dead ends: 6650 [2024-12-02 10:20:49,069 INFO L226 Difference]: Without dead ends: 3145 [2024-12-02 10:20:49,078 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 10:20:49,078 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 32 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5751 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:49,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 5751 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2024-12-02 10:20:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 3133. [2024-12-02 10:20:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 2534 states have (on average 1.6562746645619575) internal successors, (4197), 2607 states have internal predecessors, (4197), 419 states have call successors, (419), 163 states have call predecessors, (419), 179 states have return successors, (517), 410 states have call predecessors, (517), 415 states have call successors, (517) [2024-12-02 10:20:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 5133 transitions. [2024-12-02 10:20:49,193 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 5133 transitions. Word has length 172 [2024-12-02 10:20:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:49,194 INFO L471 AbstractCegarLoop]: Abstraction has 3133 states and 5133 transitions. [2024-12-02 10:20:49,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 10:20:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 5133 transitions. [2024-12-02 10:20:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-12-02 10:20:49,208 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:49,208 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:49,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 10:20:49,209 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:49,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2063739541, now seen corresponding path program 1 times [2024-12-02 10:20:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785258421] [2024-12-02 10:20:49,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:49,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 65 proven. 89 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2024-12-02 10:20:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:50,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785258421] [2024-12-02 10:20:50,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785258421] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:50,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350287263] [2024-12-02 10:20:50,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:50,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:50,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:50,116 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:50,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 10:20:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:50,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 10:20:50,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 632 proven. 17 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-12-02 10:20:51,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 86 proven. 64 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-12-02 10:20:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350287263] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:51,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:51,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 14] total 28 [2024-12-02 10:20:51,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957822322] [2024-12-02 10:20:51,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:51,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 10:20:51,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:51,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 10:20:51,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2024-12-02 10:20:51,885 INFO L87 Difference]: Start difference. First operand 3133 states and 5133 transitions. Second operand has 28 states, 26 states have (on average 17.923076923076923) internal successors, (466), 24 states have internal predecessors, (466), 19 states have call successors, (110), 9 states have call predecessors, (110), 15 states have return successors, (111), 21 states have call predecessors, (111), 19 states have call successors, (111) [2024-12-02 10:21:33,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:21:33,554 INFO L93 Difference]: Finished difference Result 34707 states and 58766 transitions. [2024-12-02 10:21:33,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 352 states. [2024-12-02 10:21:33,555 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 17.923076923076923) internal successors, (466), 24 states have internal predecessors, (466), 19 states have call successors, (110), 9 states have call predecessors, (110), 15 states have return successors, (111), 21 states have call predecessors, (111), 19 states have call successors, (111) Word has length 498 [2024-12-02 10:21:33,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:21:33,717 INFO L225 Difference]: With dead ends: 34707 [2024-12-02 10:21:33,717 INFO L226 Difference]: Without dead ends: 31256 [2024-12-02 10:21:33,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1452 GetRequests, 1081 SyntacticMatches, 3 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60585 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=10952, Invalid=125578, Unknown=0, NotChecked=0, Total=136530 [2024-12-02 10:21:33,831 INFO L435 NwaCegarLoop]: 2551 mSDtfsCounter, 30325 mSDsluCounter, 22409 mSDsCounter, 0 mSdLazyCounter, 77883 mSolverCounterSat, 11128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30325 SdHoareTripleChecker+Valid, 24960 SdHoareTripleChecker+Invalid, 89011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 11128 IncrementalHoareTripleChecker+Valid, 77883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:21:33,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30325 Valid, 24960 Invalid, 89011 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [11128 Valid, 77883 Invalid, 0 Unknown, 0 Unchecked, 32.3s Time] [2024-12-02 10:21:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31256 states. [2024-12-02 10:21:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31256 to 26004. [2024-12-02 10:21:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26004 states, 21110 states have (on average 1.629512079583136) internal successors, (34399), 21668 states have internal predecessors, (34399), 3301 states have call successors, (3301), 1466 states have call predecessors, (3301), 1592 states have return successors, (4649), 3289 states have call predecessors, (4649), 3283 states have call successors, (4649) [2024-12-02 10:21:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26004 states to 26004 states and 42349 transitions. [2024-12-02 10:21:35,268 INFO L78 Accepts]: Start accepts. Automaton has 26004 states and 42349 transitions. Word has length 498 [2024-12-02 10:21:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:21:35,269 INFO L471 AbstractCegarLoop]: Abstraction has 26004 states and 42349 transitions. [2024-12-02 10:21:35,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 17.923076923076923) internal successors, (466), 24 states have internal predecessors, (466), 19 states have call successors, (110), 9 states have call predecessors, (110), 15 states have return successors, (111), 21 states have call predecessors, (111), 19 states have call successors, (111) [2024-12-02 10:21:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 26004 states and 42349 transitions. [2024-12-02 10:21:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-12-02 10:21:35,358 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:21:35,359 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:21:35,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 10:21:35,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:21:35,559 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:21:35,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:21:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1092110201, now seen corresponding path program 1 times [2024-12-02 10:21:35,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:21:35,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274508087] [2024-12-02 10:21:35,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:35,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:21:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 61 proven. 70 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2024-12-02 10:21:36,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:21:36,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274508087] [2024-12-02 10:21:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274508087] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:21:36,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833869329] [2024-12-02 10:21:36,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:36,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:21:36,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:21:36,042 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:21:36,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 10:21:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:36,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:21:36,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:21:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 659 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-12-02 10:21:36,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:21:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833869329] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:21:36,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:21:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-12-02 10:21:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856582282] [2024-12-02 10:21:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:21:36,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:21:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:21:36,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:21:36,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:21:36,730 INFO L87 Difference]: Start difference. First operand 26004 states and 42349 transitions. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2024-12-02 10:21:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:21:37,727 INFO L93 Difference]: Finished difference Result 52232 states and 85222 transitions. [2024-12-02 10:21:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:21:37,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) Word has length 515 [2024-12-02 10:21:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:21:37,864 INFO L225 Difference]: With dead ends: 52232 [2024-12-02 10:21:37,864 INFO L226 Difference]: Without dead ends: 26310 [2024-12-02 10:21:37,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:21:37,937 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 0 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:21:37,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5057 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:21:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26310 states. [2024-12-02 10:21:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26310 to 26184. [2024-12-02 10:21:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26184 states, 21252 states have (on average 1.625305853566723) internal successors, (34541), 21826 states have internal predecessors, (34541), 3301 states have call successors, (3301), 1466 states have call predecessors, (3301), 1630 states have return successors, (4694), 3311 states have call predecessors, (4694), 3283 states have call successors, (4694) [2024-12-02 10:21:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26184 states to 26184 states and 42536 transitions. [2024-12-02 10:21:39,457 INFO L78 Accepts]: Start accepts. Automaton has 26184 states and 42536 transitions. Word has length 515 [2024-12-02 10:21:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:21:39,457 INFO L471 AbstractCegarLoop]: Abstraction has 26184 states and 42536 transitions. [2024-12-02 10:21:39,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2024-12-02 10:21:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 26184 states and 42536 transitions. [2024-12-02 10:21:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-12-02 10:21:39,512 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:21:39,513 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:39,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 10:21:39,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 10:21:39,713 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:21:39,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:21:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1752605946, now seen corresponding path program 1 times [2024-12-02 10:21:39,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:21:39,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535133412] [2024-12-02 10:21:39,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:39,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:21:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 61 proven. 60 refuted. 0 times theorem prover too weak. 1051 trivial. 0 not checked. [2024-12-02 10:21:40,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:21:40,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535133412] [2024-12-02 10:21:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535133412] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:21:40,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847408248] [2024-12-02 10:21:40,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:40,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:21:40,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:21:40,086 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:21:40,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 10:21:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:40,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 3353 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 10:21:40,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:21:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 530 proven. 32 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-12-02 10:21:40,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:21:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 80 proven. 46 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2024-12-02 10:21:41,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847408248] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:21:41,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:21:41,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 14] total 28 [2024-12-02 10:21:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616169399] [2024-12-02 10:21:41,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:21:41,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 10:21:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:21:41,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 10:21:41,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2024-12-02 10:21:41,701 INFO L87 Difference]: Start difference. First operand 26184 states and 42536 transitions. Second operand has 28 states, 25 states have (on average 16.76) internal successors, (419), 24 states have internal predecessors, (419), 15 states have call successors, (106), 7 states have call predecessors, (106), 17 states have return successors, (107), 17 states have call predecessors, (107), 15 states have call successors, (107) [2024-12-02 10:21:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:21:57,467 INFO L93 Difference]: Finished difference Result 106925 states and 180113 transitions. [2024-12-02 10:21:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-12-02 10:21:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 16.76) internal successors, (419), 24 states have internal predecessors, (419), 15 states have call successors, (106), 7 states have call predecessors, (106), 17 states have return successors, (107), 17 states have call predecessors, (107), 15 states have call successors, (107) Word has length 515 [2024-12-02 10:21:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:21:57,834 INFO L225 Difference]: With dead ends: 106925 [2024-12-02 10:21:57,834 INFO L226 Difference]: Without dead ends: 80770 [2024-12-02 10:21:58,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1042 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2621 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1402, Invalid=7910, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 10:21:58,051 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 16393 mSDsluCounter, 7329 mSDsCounter, 0 mSdLazyCounter, 22097 mSolverCounterSat, 5843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16393 SdHoareTripleChecker+Valid, 8061 SdHoareTripleChecker+Invalid, 27940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5843 IncrementalHoareTripleChecker+Valid, 22097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:21:58,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16393 Valid, 8061 Invalid, 27940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5843 Valid, 22097 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-12-02 10:21:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80770 states. [2024-12-02 10:22:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80770 to 69635. [2024-12-02 10:22:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69635 states, 56264 states have (on average 1.6245556661453149) internal successors, (91404), 58049 states have internal predecessors, (91404), 8709 states have call successors, (8709), 3844 states have call predecessors, (8709), 4661 states have return successors, (12958), 8917 states have call predecessors, (12958), 8681 states have call successors, (12958) [2024-12-02 10:22:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69635 states to 69635 states and 113071 transitions. [2024-12-02 10:22:01,467 INFO L78 Accepts]: Start accepts. Automaton has 69635 states and 113071 transitions. Word has length 515 [2024-12-02 10:22:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:22:01,467 INFO L471 AbstractCegarLoop]: Abstraction has 69635 states and 113071 transitions. [2024-12-02 10:22:01,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 16.76) internal successors, (419), 24 states have internal predecessors, (419), 15 states have call successors, (106), 7 states have call predecessors, (106), 17 states have return successors, (107), 17 states have call predecessors, (107), 15 states have call successors, (107) [2024-12-02 10:22:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 69635 states and 113071 transitions. [2024-12-02 10:22:01,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2024-12-02 10:22:01,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:22:01,557 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:01,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 10:22:01,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 10:22:01,757 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:22:01,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:22:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash 212263519, now seen corresponding path program 1 times [2024-12-02 10:22:01,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:22:01,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967556980] [2024-12-02 10:22:01,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:22:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 63 proven. 70 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2024-12-02 10:22:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:22:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967556980] [2024-12-02 10:22:01,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967556980] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:22:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713716063] [2024-12-02 10:22:01,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:01,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:22:01,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:22:01,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:22:01,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 10:22:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:02,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 3353 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:22:02,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:22:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 553 proven. 4 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-12-02 10:22:02,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:22:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 63 proven. 70 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2024-12-02 10:22:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713716063] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:22:03,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:22:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-12-02 10:22:03,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144311939] [2024-12-02 10:22:03,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:22:03,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 10:22:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:22:03,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 10:22:03,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:22:03,183 INFO L87 Difference]: Start difference. First operand 69635 states and 113071 transitions. Second operand has 18 states, 18 states have (on average 23.61111111111111) internal successors, (425), 18 states have internal predecessors, (425), 11 states have call successors, (96), 7 states have call predecessors, (96), 11 states have return successors, (96), 12 states have call predecessors, (96), 11 states have call successors, (96) [2024-12-02 10:22:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:22:27,506 INFO L93 Difference]: Finished difference Result 321847 states and 559537 transitions. [2024-12-02 10:22:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-12-02 10:22:27,507 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 23.61111111111111) internal successors, (425), 18 states have internal predecessors, (425), 11 states have call successors, (96), 7 states have call predecessors, (96), 11 states have return successors, (96), 12 states have call predecessors, (96), 11 states have call successors, (96) Word has length 520 [2024-12-02 10:22:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:22:29,007 INFO L225 Difference]: With dead ends: 321847 [2024-12-02 10:22:29,008 INFO L226 Difference]: Without dead ends: 247737 [2024-12-02 10:22:29,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1136 GetRequests, 1056 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1273, Invalid=5047, Unknown=0, NotChecked=0, Total=6320 [2024-12-02 10:22:29,811 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 12030 mSDsluCounter, 6868 mSDsCounter, 0 mSdLazyCounter, 14849 mSolverCounterSat, 3923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12174 SdHoareTripleChecker+Valid, 7909 SdHoareTripleChecker+Invalid, 18772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3923 IncrementalHoareTripleChecker+Valid, 14849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:22:29,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12174 Valid, 7909 Invalid, 18772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3923 Valid, 14849 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-12-02 10:22:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247737 states. [2024-12-02 10:22:40,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247737 to 201565. [2024-12-02 10:22:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201565 states, 163324 states have (on average 1.6280277240332102) internal successors, (265896), 168154 states have internal predecessors, (265896), 25612 states have call successors, (25612), 11435 states have call predecessors, (25612), 12628 states have return successors, (36782), 25635 states have call predecessors, (36782), 25567 states have call successors, (36782) [2024-12-02 10:22:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201565 states to 201565 states and 328290 transitions. [2024-12-02 10:22:42,139 INFO L78 Accepts]: Start accepts. Automaton has 201565 states and 328290 transitions. Word has length 520 [2024-12-02 10:22:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:22:42,140 INFO L471 AbstractCegarLoop]: Abstraction has 201565 states and 328290 transitions. [2024-12-02 10:22:42,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 23.61111111111111) internal successors, (425), 18 states have internal predecessors, (425), 11 states have call successors, (96), 7 states have call predecessors, (96), 11 states have return successors, (96), 12 states have call predecessors, (96), 11 states have call successors, (96) [2024-12-02 10:22:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 201565 states and 328290 transitions. [2024-12-02 10:22:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-12-02 10:22:42,287 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:22:42,287 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:22:42,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 10:22:42,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 10:22:42,487 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:22:42,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:22:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash -916347664, now seen corresponding path program 1 times [2024-12-02 10:22:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:22:42,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978518927] [2024-12-02 10:22:42,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:22:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 71 proven. 66 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2024-12-02 10:22:42,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:22:42,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978518927] [2024-12-02 10:22:42,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978518927] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:22:42,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296167801] [2024-12-02 10:22:42,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:42,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:22:42,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:22:42,740 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:22:42,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 10:22:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:43,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:22:43,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:22:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 504 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2024-12-02 10:22:43,312 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:22:43,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296167801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:22:43,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:22:43,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-12-02 10:22:43,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070123397] [2024-12-02 10:22:43,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:22:43,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:22:43,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:22:43,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:22:43,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:22:43,314 INFO L87 Difference]: Start difference. First operand 201565 states and 328290 transitions. Second operand has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:22:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:22:54,973 INFO L93 Difference]: Finished difference Result 388077 states and 632243 transitions. [2024-12-02 10:22:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:22:54,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 522 [2024-12-02 10:22:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:22:56,016 INFO L225 Difference]: With dead ends: 388077 [2024-12-02 10:22:56,017 INFO L226 Difference]: Without dead ends: 201520 [2024-12-02 10:22:56,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:22:56,659 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 22 mSDsluCounter, 4173 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 5014 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:22:56,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 5014 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:22:56,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201520 states. [2024-12-02 10:23:05,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201520 to 201520. [2024-12-02 10:23:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201520 states, 163279 states have (on average 1.627925207773198) internal successors, (265806), 168109 states have internal predecessors, (265806), 25612 states have call successors, (25612), 11435 states have call predecessors, (25612), 12628 states have return successors, (36782), 25635 states have call predecessors, (36782), 25567 states have call successors, (36782) [2024-12-02 10:23:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201520 states to 201520 states and 328200 transitions. [2024-12-02 10:23:06,873 INFO L78 Accepts]: Start accepts. Automaton has 201520 states and 328200 transitions. Word has length 522 [2024-12-02 10:23:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:23:06,873 INFO L471 AbstractCegarLoop]: Abstraction has 201520 states and 328200 transitions. [2024-12-02 10:23:06,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:23:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 201520 states and 328200 transitions. [2024-12-02 10:23:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-12-02 10:23:07,021 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:23:07,021 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:07,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 10:23:07,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:07,222 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:23:07,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash -707977590, now seen corresponding path program 1 times [2024-12-02 10:23:07,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:07,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982235913] [2024-12-02 10:23:07,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:07,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 71 proven. 66 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2024-12-02 10:23:07,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:07,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982235913] [2024-12-02 10:23:07,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982235913] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:23:07,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074295869] [2024-12-02 10:23:07,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:07,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:07,484 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:23:07,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 10:23:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:07,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:23:07,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:23:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2024-12-02 10:23:08,059 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:23:08,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074295869] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:08,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:23:08,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-12-02 10:23:08,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860316126] [2024-12-02 10:23:08,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:08,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:23:08,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:08,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:23:08,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:23:08,061 INFO L87 Difference]: Start difference. First operand 201520 states and 328200 transitions. Second operand has 7 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:23:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:23:18,879 INFO L93 Difference]: Finished difference Result 388032 states and 632153 transitions. [2024-12-02 10:23:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:23:18,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 523 [2024-12-02 10:23:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:23:20,140 INFO L225 Difference]: With dead ends: 388032 [2024-12-02 10:23:20,140 INFO L226 Difference]: Without dead ends: 201475 [2024-12-02 10:23:21,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:23:21,060 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 26 mSDsluCounter, 4129 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:23:21,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4961 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:23:21,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201475 states. [2024-12-02 10:23:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201475 to 201475. [2024-12-02 10:23:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201475 states, 163234 states have (on average 1.6278165088155654) internal successors, (265715), 168064 states have internal predecessors, (265715), 25612 states have call successors, (25612), 11435 states have call predecessors, (25612), 12628 states have return successors, (36782), 25635 states have call predecessors, (36782), 25567 states have call successors, (36782) [2024-12-02 10:23:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201475 states to 201475 states and 328109 transitions. [2024-12-02 10:23:31,056 INFO L78 Accepts]: Start accepts. Automaton has 201475 states and 328109 transitions. Word has length 523 [2024-12-02 10:23:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:23:31,057 INFO L471 AbstractCegarLoop]: Abstraction has 201475 states and 328109 transitions. [2024-12-02 10:23:31,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:23:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 201475 states and 328109 transitions. [2024-12-02 10:23:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-12-02 10:23:31,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:23:31,202 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:31,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 10:23:31,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 10:23:31,403 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:23:31,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1044231284, now seen corresponding path program 1 times [2024-12-02 10:23:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:31,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792697418] [2024-12-02 10:23:31,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 71 proven. 66 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2024-12-02 10:23:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792697418] [2024-12-02 10:23:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792697418] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:23:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540649834] [2024-12-02 10:23:31,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:31,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:31,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:31,653 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:23:31,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 10:23:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:32,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:23:32,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:23:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2024-12-02 10:23:32,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:23:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540649834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:32,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:23:32,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-12-02 10:23:32,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002421365] [2024-12-02 10:23:32,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:32,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:23:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:32,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:23:32,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:23:32,248 INFO L87 Difference]: Start difference. First operand 201475 states and 328109 transitions. Second operand has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:23:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:23:42,925 INFO L93 Difference]: Finished difference Result 387987 states and 632062 transitions. [2024-12-02 10:23:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:23:42,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 524 [2024-12-02 10:23:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:23:43,848 INFO L225 Difference]: With dead ends: 387987 [2024-12-02 10:23:43,848 INFO L226 Difference]: Without dead ends: 201430 [2024-12-02 10:23:44,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:23:44,745 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 24 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:23:44,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 4956 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:23:44,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201430 states. [2024-12-02 10:23:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201430 to 201430. [2024-12-02 10:23:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201430 states, 163189 states have (on average 1.6277138777736244) internal successors, (265625), 168019 states have internal predecessors, (265625), 25612 states have call successors, (25612), 11435 states have call predecessors, (25612), 12628 states have return successors, (36782), 25635 states have call predecessors, (36782), 25567 states have call successors, (36782) [2024-12-02 10:23:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201430 states to 201430 states and 328019 transitions. [2024-12-02 10:23:55,236 INFO L78 Accepts]: Start accepts. Automaton has 201430 states and 328019 transitions. Word has length 524 [2024-12-02 10:23:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:23:55,237 INFO L471 AbstractCegarLoop]: Abstraction has 201430 states and 328019 transitions. [2024-12-02 10:23:55,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:23:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 201430 states and 328019 transitions. [2024-12-02 10:23:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-12-02 10:23:55,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:23:55,389 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:55,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 10:23:55,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:55,590 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:23:55,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1083952602, now seen corresponding path program 1 times [2024-12-02 10:23:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:55,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086680061] [2024-12-02 10:23:55,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 71 proven. 66 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2024-12-02 10:23:55,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:55,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086680061] [2024-12-02 10:23:55,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086680061] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:23:55,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675285478] [2024-12-02 10:23:55,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:55,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:55,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:55,848 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:23:55,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 10:23:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:56,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:23:56,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:23:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2024-12-02 10:23:56,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:23:56,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675285478] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:56,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:23:56,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-12-02 10:23:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886611855] [2024-12-02 10:23:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:56,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:23:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:56,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:23:56,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:23:56,445 INFO L87 Difference]: Start difference. First operand 201430 states and 328019 transitions. Second operand has 7 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:24:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:24:06,736 INFO L93 Difference]: Finished difference Result 387942 states and 631972 transitions. [2024-12-02 10:24:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:24:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 525 [2024-12-02 10:24:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:24:07,686 INFO L225 Difference]: With dead ends: 387942 [2024-12-02 10:24:07,686 INFO L226 Difference]: Without dead ends: 201385 [2024-12-02 10:24:08,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:24:08,439 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 21 mSDsluCounter, 4121 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4951 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:24:08,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4951 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:24:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201385 states. [2024-12-02 10:24:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201385 to 201385. [2024-12-02 10:24:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201385 states, 163144 states have (on average 1.627611190114255) internal successors, (265535), 167974 states have internal predecessors, (265535), 25612 states have call successors, (25612), 11435 states have call predecessors, (25612), 12628 states have return successors, (36782), 25635 states have call predecessors, (36782), 25567 states have call successors, (36782) [2024-12-02 10:24:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201385 states to 201385 states and 327929 transitions. [2024-12-02 10:24:19,280 INFO L78 Accepts]: Start accepts. Automaton has 201385 states and 327929 transitions. Word has length 525 [2024-12-02 10:24:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:24:19,280 INFO L471 AbstractCegarLoop]: Abstraction has 201385 states and 327929 transitions. [2024-12-02 10:24:19,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2024-12-02 10:24:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 201385 states and 327929 transitions. [2024-12-02 10:24:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-12-02 10:24:19,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:24:19,422 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:24:19,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 10:24:19,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 10:24:19,623 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:24:19,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1569975355, now seen corresponding path program 1 times [2024-12-02 10:24:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411655949] [2024-12-02 10:24:19,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:19,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 71 proven. 66 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2024-12-02 10:24:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411655949] [2024-12-02 10:24:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411655949] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:24:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709567622] [2024-12-02 10:24:19,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:19,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:24:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:24:19,864 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:24:19,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c384073-7ada-4622-90d0-991b71e204c0/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 10:24:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:20,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 10:24:20,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:24:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 529 proven. 26 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 10:24:20,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:24:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 87 proven. 59 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2024-12-02 10:24:21,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709567622] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:24:21,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:24:21,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 12] total 23 [2024-12-02 10:24:21,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145672195] [2024-12-02 10:24:21,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:24:21,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 10:24:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:21,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 10:24:21,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-12-02 10:24:21,324 INFO L87 Difference]: Start difference. First operand 201385 states and 327929 transitions. Second operand has 23 states, 21 states have (on average 21.857142857142858) internal successors, (459), 23 states have internal predecessors, (459), 18 states have call successors, (110), 9 states have call predecessors, (110), 12 states have return successors, (104), 16 states have call predecessors, (104), 18 states have call successors, (104)