./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:31:31,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:31:31,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:31:31,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:31:31,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:31:31,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:31:31,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:31:31,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:31:31,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:31:31,327 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:31:31,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:31:31,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:31:31,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:31:31,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:31:31,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:31:31,329 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:31:31,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:31:31,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:31:31,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:31:31,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:31:31,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:31:31,330 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 [2025-03-16 18:31:31,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:31:31,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:31:31,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:31:31,579 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:31:31,579 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:31:31,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2025-03-16 18:31:32,783 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1230688b0/eecbf56f23984597bb4551b0ba290e7d/FLAGc038e71b1 [2025-03-16 18:31:33,054 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:31:33,055 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2025-03-16 18:31:33,071 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1230688b0/eecbf56f23984597bb4551b0ba290e7d/FLAGc038e71b1 [2025-03-16 18:31:33,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1230688b0/eecbf56f23984597bb4551b0ba290e7d [2025-03-16 18:31:33,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:31:33,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:31:33,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:31:33,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:31:33,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:31:33,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19211522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33, skipping insertion in model container [2025-03-16 18:31:33,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,139 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:31:33,415 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2025-03-16 18:31:33,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:31:33,475 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:31:33,482 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [86] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [131] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [252] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1852] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1870] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2220] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2229] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2320] [2025-03-16 18:31:33,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2981] [2025-03-16 18:31:33,520 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2025-03-16 18:31:33,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:31:33,566 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:31:33,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33 WrapperNode [2025-03-16 18:31:33,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:31:33,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:31:33,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:31:33,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:31:33,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,643 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1100 [2025-03-16 18:31:33,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:31:33,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:31:33,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:31:33,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:31:33,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,686 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:31:33,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,698 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:31:33,709 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:31:33,709 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:31:33,710 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:31:33,710 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (1/1) ... [2025-03-16 18:31:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:31:33,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:33,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 18:31:33,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 18:31:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:31:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:31:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:31:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:31:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-16 18:31:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-16 18:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:31:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:31:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-16 18:31:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-16 18:31:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:31:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:31:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:31:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:31:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:31:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:31:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:31:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:31:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:31:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:31:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:31:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-16 18:31:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-16 18:31:33,902 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:31:33,904 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:31:33,958 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L249: #res := ~retValue_acc~4; [2025-03-16 18:31:33,974 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L171: #res := ~retValue_acc~2; [2025-03-16 18:31:33,977 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L336: #res := ~retValue_acc~5; [2025-03-16 18:31:33,991 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L509: #res := ~retValue_acc~6; [2025-03-16 18:31:34,055 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1165: #res#1 := ~retValue_acc~16#1; [2025-03-16 18:31:34,056 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L552-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~8#1; [2025-03-16 18:31:34,062 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1840: #res := ~retValue_acc~20; [2025-03-16 18:31:34,304 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1046-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~13#1; [2025-03-16 18:31:34,304 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1075: #res#1 := ~retValue_acc~14#1; [2025-03-16 18:31:34,362 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1210: #res := ~retValue_acc~18; [2025-03-16 18:31:34,370 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L210: #res := ~retValue_acc~3; [2025-03-16 18:31:34,410 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L601-1: isEmpty_#res#1 := isEmpty_~retValue_acc~10#1; [2025-03-16 18:31:34,449 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L681-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~11#1; [2025-03-16 18:31:34,450 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L694-1: isIdle_#res#1 := isIdle_~retValue_acc~12#1; [2025-03-16 18:31:34,473 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1849-1: isExecutiveFloor_#res#1 := isExecutiveFloor_~retValue_acc~21#1; [2025-03-16 18:31:34,513 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2667: #res := ~retValue_acc~25; [2025-03-16 18:31:34,555 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L83-1: valid_product_#res#1 := valid_product_~retValue_acc~1#1; [2025-03-16 18:31:34,556 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2217-1: main_#res#1 := main_~retValue_acc~23#1; [2025-03-16 18:31:34,564 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2431: #res := ~retValue_acc~24; [2025-03-16 18:31:34,565 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L518: #res := ~retValue_acc~7; [2025-03-16 18:31:34,567 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2978: #res := ~retValue_acc~26; [2025-03-16 18:31:34,633 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1196-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~17#1; [2025-03-16 18:31:34,746 INFO L? ?]: Removed 452 outVars from TransFormulas that were not future-live. [2025-03-16 18:31:34,746 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:31:34,765 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:31:34,765 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:31:34,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:31:34 BoogieIcfgContainer [2025-03-16 18:31:34,768 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:31:34,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:31:34,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:31:34,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:31:34,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:31:33" (1/3) ... [2025-03-16 18:31:34,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5366b99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:31:34, skipping insertion in model container [2025-03-16 18:31:34,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:33" (2/3) ... [2025-03-16 18:31:34,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5366b99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:31:34, skipping insertion in model container [2025-03-16 18:31:34,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:31:34" (3/3) ... [2025-03-16 18:31:34,774 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2025-03-16 18:31:34,786 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:31:34,788 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product28.cil.c that has 26 procedures, 545 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:31:34,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:31:34,849 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;@65b0be0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:31:34,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:31:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 421 states have (on average 1.6840855106888362) internal successors, (709), 439 states have internal predecessors, (709), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:31:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-16 18:31:34,862 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:34,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:34,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:34,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1737025040, now seen corresponding path program 1 times [2025-03-16 18:31:34,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:34,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564604345] [2025-03-16 18:31:34,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:34,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:34,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-16 18:31:34,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-16 18:31:34,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:34,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564604345] [2025-03-16 18:31:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564604345] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:35,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:35,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976482907] [2025-03-16 18:31:35,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:35,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:35,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:35,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:35,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:35,309 INFO L87 Difference]: Start difference. First operand has 545 states, 421 states have (on average 1.6840855106888362) internal successors, (709), 439 states have internal predecessors, (709), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:35,459 INFO L93 Difference]: Finished difference Result 1088 states and 1811 transitions. [2025-03-16 18:31:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2025-03-16 18:31:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:35,476 INFO L225 Difference]: With dead ends: 1088 [2025-03-16 18:31:35,476 INFO L226 Difference]: Without dead ends: 542 [2025-03-16 18:31:35,482 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 [2025-03-16 18:31:35,484 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 6 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2658 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 [2025-03-16 18:31:35,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2658 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-03-16 18:31:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2025-03-16 18:31:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.6730310262529833) internal successors, (701), 436 states have internal predecessors, (701), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 894 transitions. [2025-03-16 18:31:35,566 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 894 transitions. Word has length 59 [2025-03-16 18:31:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:35,567 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 894 transitions. [2025-03-16 18:31:35,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 894 transitions. [2025-03-16 18:31:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 18:31:35,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:35,570 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:35,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:31:35,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:35,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1943741489, now seen corresponding path program 1 times [2025-03-16 18:31:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250408533] [2025-03-16 18:31:35,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:35,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 18:31:35,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 18:31:35,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:35,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:35,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:35,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250408533] [2025-03-16 18:31:35,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250408533] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:35,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:35,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409319191] [2025-03-16 18:31:35,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:35,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:35,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:35,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:35,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:35,747 INFO L87 Difference]: Start difference. First operand 542 states and 894 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:35,808 INFO L93 Difference]: Finished difference Result 1071 states and 1769 transitions. [2025-03-16 18:31:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:35,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2025-03-16 18:31:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:35,813 INFO L225 Difference]: With dead ends: 1071 [2025-03-16 18:31:35,813 INFO L226 Difference]: Without dead ends: 542 [2025-03-16 18:31:35,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:35,818 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 4 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2633 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 [2025-03-16 18:31:35,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2633 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-03-16 18:31:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2025-03-16 18:31:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.6706443914081146) internal successors, (700), 436 states have internal predecessors, (700), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 893 transitions. [2025-03-16 18:31:35,852 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 893 transitions. Word has length 60 [2025-03-16 18:31:35,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:35,852 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 893 transitions. [2025-03-16 18:31:35,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:35,853 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 893 transitions. [2025-03-16 18:31:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:31:35,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:35,857 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:35,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:31:35,857 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:35,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash 408656237, now seen corresponding path program 1 times [2025-03-16 18:31:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182956966] [2025-03-16 18:31:35,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:35,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:31:35,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:31:35,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:35,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182956966] [2025-03-16 18:31:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182956966] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:35,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564631092] [2025-03-16 18:31:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:35,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:35,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:35,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:35,998 INFO L87 Difference]: Start difference. First operand 542 states and 893 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:36,069 INFO L93 Difference]: Finished difference Result 1071 states and 1768 transitions. [2025-03-16 18:31:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:36,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2025-03-16 18:31:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:36,075 INFO L225 Difference]: With dead ends: 1071 [2025-03-16 18:31:36,075 INFO L226 Difference]: Without dead ends: 542 [2025-03-16 18:31:36,077 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 [2025-03-16 18:31:36,078 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 3 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2633 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 [2025-03-16 18:31:36,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2633 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:36,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-03-16 18:31:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2025-03-16 18:31:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.668257756563246) internal successors, (699), 436 states have internal predecessors, (699), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 892 transitions. [2025-03-16 18:31:36,100 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 892 transitions. Word has length 61 [2025-03-16 18:31:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:36,101 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 892 transitions. [2025-03-16 18:31:36,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 892 transitions. [2025-03-16 18:31:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 18:31:36,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:36,102 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:36,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:31:36,103 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:36,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash 390923022, now seen corresponding path program 1 times [2025-03-16 18:31:36,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610678100] [2025-03-16 18:31:36,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:36,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 18:31:36,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 18:31:36,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:36,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:36,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:36,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610678100] [2025-03-16 18:31:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610678100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:36,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323787501] [2025-03-16 18:31:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:36,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:36,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:36,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:36,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:36,266 INFO L87 Difference]: Start difference. First operand 542 states and 892 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:36,323 INFO L93 Difference]: Finished difference Result 1071 states and 1767 transitions. [2025-03-16 18:31:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:36,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2025-03-16 18:31:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:36,330 INFO L225 Difference]: With dead ends: 1071 [2025-03-16 18:31:36,331 INFO L226 Difference]: Without dead ends: 542 [2025-03-16 18:31:36,333 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 [2025-03-16 18:31:36,334 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 2 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2633 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 [2025-03-16 18:31:36,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2633 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-03-16 18:31:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2025-03-16 18:31:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.665871121718377) internal successors, (698), 436 states have internal predecessors, (698), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 891 transitions. [2025-03-16 18:31:36,363 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 891 transitions. Word has length 62 [2025-03-16 18:31:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:36,364 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 891 transitions. [2025-03-16 18:31:36,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 891 transitions. [2025-03-16 18:31:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:31:36,366 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:36,366 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:36,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:31:36,366 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:36,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash 166462698, now seen corresponding path program 1 times [2025-03-16 18:31:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:36,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057570861] [2025-03-16 18:31:36,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:36,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:36,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:31:36,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:31:36,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:36,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057570861] [2025-03-16 18:31:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057570861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:36,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:36,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:36,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062947447] [2025-03-16 18:31:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:36,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:36,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:36,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:36,447 INFO L87 Difference]: Start difference. First operand 542 states and 891 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:36,503 INFO L93 Difference]: Finished difference Result 1071 states and 1766 transitions. [2025-03-16 18:31:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2025-03-16 18:31:36,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:36,508 INFO L225 Difference]: With dead ends: 1071 [2025-03-16 18:31:36,508 INFO L226 Difference]: Without dead ends: 542 [2025-03-16 18:31:36,510 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 [2025-03-16 18:31:36,511 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 1 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2633 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 [2025-03-16 18:31:36,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2633 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:36,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-03-16 18:31:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2025-03-16 18:31:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.6634844868735084) internal successors, (697), 436 states have internal predecessors, (697), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 890 transitions. [2025-03-16 18:31:36,536 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 890 transitions. Word has length 63 [2025-03-16 18:31:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:36,536 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 890 transitions. [2025-03-16 18:31:36,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 890 transitions. [2025-03-16 18:31:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:31:36,537 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:36,537 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:36,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:31:36,537 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:36,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2123396587, now seen corresponding path program 1 times [2025-03-16 18:31:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:36,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669161674] [2025-03-16 18:31:36,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:36,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:31:36,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:31:36,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:36,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:36,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669161674] [2025-03-16 18:31:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669161674] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:36,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:36,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:31:36,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653084805] [2025-03-16 18:31:36,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:36,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:31:36,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:36,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:31:36,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:36,683 INFO L87 Difference]: Start difference. First operand 542 states and 890 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:31:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:36,776 INFO L93 Difference]: Finished difference Result 1082 states and 1783 transitions. [2025-03-16 18:31:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:31:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2025-03-16 18:31:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:36,784 INFO L225 Difference]: With dead ends: 1082 [2025-03-16 18:31:36,784 INFO L226 Difference]: Without dead ends: 557 [2025-03-16 18:31:36,785 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 [2025-03-16 18:31:36,786 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 91 mSDsluCounter, 4300 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5177 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 [2025-03-16 18:31:36,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5177 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-16 18:31:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2025-03-16 18:31:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 429 states have (on average 1.6596736596736597) internal successors, (712), 448 states have internal predecessors, (712), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2025-03-16 18:31:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 910 transitions. [2025-03-16 18:31:36,809 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 910 transitions. Word has length 64 [2025-03-16 18:31:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:36,809 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 910 transitions. [2025-03-16 18:31:36,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:31:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 910 transitions. [2025-03-16 18:31:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:31:36,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:36,810 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:36,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:31:36,810 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:36,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:36,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1402400694, now seen corresponding path program 1 times [2025-03-16 18:31:36,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:36,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844301930] [2025-03-16 18:31:36,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:36,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:36,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:31:36,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:31:36,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:36,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:36,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:36,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844301930] [2025-03-16 18:31:36,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844301930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:36,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:36,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:36,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429248364] [2025-03-16 18:31:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:36,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:36,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:36,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:36,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:36,883 INFO L87 Difference]: Start difference. First operand 555 states and 910 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:36,926 INFO L93 Difference]: Finished difference Result 1089 states and 1794 transitions. [2025-03-16 18:31:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:36,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2025-03-16 18:31:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:36,930 INFO L225 Difference]: With dead ends: 1089 [2025-03-16 18:31:36,930 INFO L226 Difference]: Without dead ends: 551 [2025-03-16 18:31:36,932 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 [2025-03-16 18:31:36,933 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 1 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2628 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 [2025-03-16 18:31:36,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2628 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-03-16 18:31:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2025-03-16 18:31:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 427 states have (on average 1.6604215456674474) internal successors, (709), 445 states have internal predecessors, (709), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 93 states have call predecessors, (97), 96 states have call successors, (97) [2025-03-16 18:31:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 903 transitions. [2025-03-16 18:31:36,949 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 903 transitions. Word has length 64 [2025-03-16 18:31:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:36,950 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 903 transitions. [2025-03-16 18:31:36,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 903 transitions. [2025-03-16 18:31:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 18:31:36,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:36,951 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:36,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:31:36,951 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:36,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:36,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2041580207, now seen corresponding path program 1 times [2025-03-16 18:31:36,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:36,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765040051] [2025-03-16 18:31:36,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:36,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:36,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 18:31:36,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 18:31:36,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:36,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:37,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:37,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765040051] [2025-03-16 18:31:37,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765040051] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:37,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:37,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:37,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079983491] [2025-03-16 18:31:37,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:37,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:37,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:37,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:37,046 INFO L87 Difference]: Start difference. First operand 551 states and 903 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:37,242 INFO L93 Difference]: Finished difference Result 1132 states and 1866 transitions. [2025-03-16 18:31:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:31:37,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2025-03-16 18:31:37,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:37,246 INFO L225 Difference]: With dead ends: 1132 [2025-03-16 18:31:37,246 INFO L226 Difference]: Without dead ends: 583 [2025-03-16 18:31:37,248 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 [2025-03-16 18:31:37,249 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 72 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4181 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 [2025-03-16 18:31:37,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4181 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:31:37,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2025-03-16 18:31:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 556. [2025-03-16 18:31:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 432 states have (on average 1.6458333333333333) internal successors, (711), 449 states have internal predecessors, (711), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 904 transitions. [2025-03-16 18:31:37,279 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 904 transitions. Word has length 65 [2025-03-16 18:31:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:37,279 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 904 transitions. [2025-03-16 18:31:37,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 904 transitions. [2025-03-16 18:31:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:31:37,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:37,281 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:37,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:31:37,281 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:37,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1023962686, now seen corresponding path program 1 times [2025-03-16 18:31:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:37,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577878653] [2025-03-16 18:31:37,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:37,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:31:37,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:31:37,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:37,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:37,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:37,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577878653] [2025-03-16 18:31:37,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577878653] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:37,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:37,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:37,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315407503] [2025-03-16 18:31:37,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:37,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:37,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:37,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:37,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:37,382 INFO L87 Difference]: Start difference. First operand 556 states and 904 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:37,547 INFO L93 Difference]: Finished difference Result 1083 states and 1761 transitions. [2025-03-16 18:31:37,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:37,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2025-03-16 18:31:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:37,553 INFO L225 Difference]: With dead ends: 1083 [2025-03-16 18:31:37,554 INFO L226 Difference]: Without dead ends: 574 [2025-03-16 18:31:37,556 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 [2025-03-16 18:31:37,558 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 56 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4158 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:37,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4158 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-16 18:31:37,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 556. [2025-03-16 18:31:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 432 states have (on average 1.6365740740740742) internal successors, (707), 449 states have internal predecessors, (707), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 900 transitions. [2025-03-16 18:31:37,583 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 900 transitions. Word has length 66 [2025-03-16 18:31:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:37,583 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 900 transitions. [2025-03-16 18:31:37,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 900 transitions. [2025-03-16 18:31:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:31:37,584 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:37,584 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:37,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:31:37,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:37,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:37,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1123363508, now seen corresponding path program 1 times [2025-03-16 18:31:37,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:37,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863362190] [2025-03-16 18:31:37,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:37,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:37,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:31:37,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:31:37,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:37,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:37,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:37,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863362190] [2025-03-16 18:31:37,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863362190] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:37,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:37,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343800535] [2025-03-16 18:31:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:37,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:37,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:37,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:37,689 INFO L87 Difference]: Start difference. First operand 556 states and 900 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:37,841 INFO L93 Difference]: Finished difference Result 1083 states and 1757 transitions. [2025-03-16 18:31:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2025-03-16 18:31:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:37,846 INFO L225 Difference]: With dead ends: 1083 [2025-03-16 18:31:37,846 INFO L226 Difference]: Without dead ends: 574 [2025-03-16 18:31:37,848 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 [2025-03-16 18:31:37,848 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 55 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4153 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:37,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4153 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-16 18:31:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 556. [2025-03-16 18:31:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 432 states have (on average 1.6273148148148149) internal successors, (703), 449 states have internal predecessors, (703), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 896 transitions. [2025-03-16 18:31:37,867 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 896 transitions. Word has length 67 [2025-03-16 18:31:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:37,867 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 896 transitions. [2025-03-16 18:31:37,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:37,867 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 896 transitions. [2025-03-16 18:31:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:31:37,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:37,868 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:37,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:31:37,868 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:37,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash -629967005, now seen corresponding path program 1 times [2025-03-16 18:31:37,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:37,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248375805] [2025-03-16 18:31:37,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:37,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:31:37,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:31:37,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:37,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248375805] [2025-03-16 18:31:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248375805] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:37,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:37,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:31:37,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77273034] [2025-03-16 18:31:37,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:37,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:31:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:37,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:31:37,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:37,979 INFO L87 Difference]: Start difference. First operand 556 states and 896 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:31:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:38,048 INFO L93 Difference]: Finished difference Result 1074 states and 1739 transitions. [2025-03-16 18:31:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:31:38,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2025-03-16 18:31:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:38,053 INFO L225 Difference]: With dead ends: 1074 [2025-03-16 18:31:38,053 INFO L226 Difference]: Without dead ends: 544 [2025-03-16 18:31:38,055 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 [2025-03-16 18:31:38,056 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 94 mSDsluCounter, 4234 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5100 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 [2025-03-16 18:31:38,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5100 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2025-03-16 18:31:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 535. [2025-03-16 18:31:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 411 states have (on average 1.6204379562043796) internal successors, (666), 428 states have internal predecessors, (666), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 859 transitions. [2025-03-16 18:31:38,072 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 859 transitions. Word has length 67 [2025-03-16 18:31:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:38,072 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 859 transitions. [2025-03-16 18:31:38,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:31:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 859 transitions. [2025-03-16 18:31:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 18:31:38,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:38,074 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:38,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 18:31:38,074 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:38,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:38,075 INFO L85 PathProgramCache]: Analyzing trace with hash -363047099, now seen corresponding path program 1 times [2025-03-16 18:31:38,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:38,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536456334] [2025-03-16 18:31:38,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:38,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:38,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:31:38,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:31:38,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:38,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:38,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:38,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536456334] [2025-03-16 18:31:38,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536456334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:38,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:38,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389409519] [2025-03-16 18:31:38,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:38,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:38,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:38,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:38,170 INFO L87 Difference]: Start difference. First operand 535 states and 859 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:38,245 INFO L93 Difference]: Finished difference Result 1053 states and 1702 transitions. [2025-03-16 18:31:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-03-16 18:31:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:38,249 INFO L225 Difference]: With dead ends: 1053 [2025-03-16 18:31:38,249 INFO L226 Difference]: Without dead ends: 544 [2025-03-16 18:31:38,251 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 [2025-03-16 18:31:38,252 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 39 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4158 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 [2025-03-16 18:31:38,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4158 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2025-03-16 18:31:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 535. [2025-03-16 18:31:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 411 states have (on average 1.6180048661800486) internal successors, (665), 428 states have internal predecessors, (665), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 858 transitions. [2025-03-16 18:31:38,267 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 858 transitions. Word has length 68 [2025-03-16 18:31:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:38,267 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 858 transitions. [2025-03-16 18:31:38,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 858 transitions. [2025-03-16 18:31:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 18:31:38,268 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:38,268 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:38,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 18:31:38,268 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:38,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1468818455, now seen corresponding path program 1 times [2025-03-16 18:31:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:38,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339955280] [2025-03-16 18:31:38,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:38,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 18:31:38,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 18:31:38,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:38,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339955280] [2025-03-16 18:31:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339955280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:38,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:38,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265045887] [2025-03-16 18:31:38,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:38,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:38,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:38,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:38,349 INFO L87 Difference]: Start difference. First operand 535 states and 858 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:38,428 INFO L93 Difference]: Finished difference Result 1053 states and 1701 transitions. [2025-03-16 18:31:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:38,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2025-03-16 18:31:38,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:38,433 INFO L225 Difference]: With dead ends: 1053 [2025-03-16 18:31:38,433 INFO L226 Difference]: Without dead ends: 544 [2025-03-16 18:31:38,435 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 [2025-03-16 18:31:38,436 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 38 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4158 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 [2025-03-16 18:31:38,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4158 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2025-03-16 18:31:38,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 535. [2025-03-16 18:31:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 411 states have (on average 1.6155717761557178) internal successors, (664), 428 states have internal predecessors, (664), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 857 transitions. [2025-03-16 18:31:38,452 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 857 transitions. Word has length 69 [2025-03-16 18:31:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:38,452 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 857 transitions. [2025-03-16 18:31:38,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 857 transitions. [2025-03-16 18:31:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-16 18:31:38,453 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:38,453 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:38,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:31:38,453 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:38,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1206937400, now seen corresponding path program 1 times [2025-03-16 18:31:38,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:38,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193479747] [2025-03-16 18:31:38,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:38,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:38,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-16 18:31:38,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 18:31:38,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:38,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:38,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193479747] [2025-03-16 18:31:38,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193479747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:38,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:38,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043092900] [2025-03-16 18:31:38,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:38,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:38,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:38,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:38,527 INFO L87 Difference]: Start difference. First operand 535 states and 857 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:38,571 INFO L93 Difference]: Finished difference Result 1040 states and 1680 transitions. [2025-03-16 18:31:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:38,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2025-03-16 18:31:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:38,575 INFO L225 Difference]: With dead ends: 1040 [2025-03-16 18:31:38,575 INFO L226 Difference]: Without dead ends: 537 [2025-03-16 18:31:38,577 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 [2025-03-16 18:31:38,577 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 16 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2444 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 [2025-03-16 18:31:38,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2444 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2025-03-16 18:31:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2025-03-16 18:31:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 413 states have (on average 1.6101694915254237) internal successors, (665), 430 states have internal predecessors, (665), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:31:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 858 transitions. [2025-03-16 18:31:38,590 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 858 transitions. Word has length 70 [2025-03-16 18:31:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:38,590 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 858 transitions. [2025-03-16 18:31:38,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:31:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 858 transitions. [2025-03-16 18:31:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 18:31:38,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:38,591 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:38,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 18:31:38,591 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:38,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2123606442, now seen corresponding path program 1 times [2025-03-16 18:31:38,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:38,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457869785] [2025-03-16 18:31:38,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:38,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:31:38,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:31:38,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:38,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:31:38,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:38,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457869785] [2025-03-16 18:31:38,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457869785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:38,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:38,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 18:31:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266880980] [2025-03-16 18:31:38,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:38,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:31:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:38,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:31:38,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 18:31:38,694 INFO L87 Difference]: Start difference. First operand 537 states and 858 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:31:38,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:38,796 INFO L93 Difference]: Finished difference Result 1521 states and 2477 transitions. [2025-03-16 18:31:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:31:38,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2025-03-16 18:31:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:38,802 INFO L225 Difference]: With dead ends: 1521 [2025-03-16 18:31:38,802 INFO L226 Difference]: Without dead ends: 1023 [2025-03-16 18:31:38,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 18:31:38,804 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 796 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:38,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1719 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2025-03-16 18:31:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 960. [2025-03-16 18:31:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 744 states have (on average 1.6276881720430108) internal successors, (1211), 770 states have internal predecessors, (1211), 170 states have call successors, (170), 47 states have call predecessors, (170), 45 states have return successors, (175), 157 states have call predecessors, (175), 168 states have call successors, (175) [2025-03-16 18:31:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1556 transitions. [2025-03-16 18:31:38,836 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1556 transitions. Word has length 71 [2025-03-16 18:31:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:38,836 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1556 transitions. [2025-03-16 18:31:38,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:31:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1556 transitions. [2025-03-16 18:31:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-16 18:31:38,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:38,839 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:38,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:31:38,839 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:38,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1175350889, now seen corresponding path program 1 times [2025-03-16 18:31:38,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:38,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603950276] [2025-03-16 18:31:38,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:38,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:38,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-16 18:31:38,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-16 18:31:38,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:38,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:31:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603950276] [2025-03-16 18:31:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603950276] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809575192] [2025-03-16 18:31:38,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:38,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:38,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:38,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:31:39,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-16 18:31:39,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-16 18:31:39,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:39,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:39,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:39,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:31:39,327 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809575192] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:39,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058564039] [2025-03-16 18:31:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:39,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:39,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:39,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:39,329 INFO L87 Difference]: Start difference. First operand 960 states and 1556 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:39,826 INFO L93 Difference]: Finished difference Result 1897 states and 3147 transitions. [2025-03-16 18:31:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:39,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2025-03-16 18:31:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:39,833 INFO L225 Difference]: With dead ends: 1897 [2025-03-16 18:31:39,833 INFO L226 Difference]: Without dead ends: 976 [2025-03-16 18:31:39,838 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 [2025-03-16 18:31:39,838 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 795 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:39,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 2077 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2025-03-16 18:31:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 976. [2025-03-16 18:31:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 758 states have (on average 1.629287598944591) internal successors, (1235), 784 states have internal predecessors, (1235), 170 states have call successors, (170), 49 states have call predecessors, (170), 47 states have return successors, (177), 157 states have call predecessors, (177), 168 states have call successors, (177) [2025-03-16 18:31:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1582 transitions. [2025-03-16 18:31:39,884 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1582 transitions. Word has length 124 [2025-03-16 18:31:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:39,884 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1582 transitions. [2025-03-16 18:31:39,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1582 transitions. [2025-03-16 18:31:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-16 18:31:39,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:39,888 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:39,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:40,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 18:31:40,088 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:40,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1970754345, now seen corresponding path program 1 times [2025-03-16 18:31:40,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:40,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035945002] [2025-03-16 18:31:40,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:40,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:40,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 18:31:40,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 18:31:40,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:40,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:31:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035945002] [2025-03-16 18:31:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035945002] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304025083] [2025-03-16 18:31:40,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:40,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:40,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:40,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:40,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:31:40,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 18:31:40,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 18:31:40,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:40,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:40,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:40,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:31:40,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:40,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304025083] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:40,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:40,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:40,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955467885] [2025-03-16 18:31:40,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:40,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:40,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:40,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:40,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:40,546 INFO L87 Difference]: Start difference. First operand 976 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:40,999 INFO L93 Difference]: Finished difference Result 1929 states and 3193 transitions. [2025-03-16 18:31:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:41,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2025-03-16 18:31:41,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:41,006 INFO L225 Difference]: With dead ends: 1929 [2025-03-16 18:31:41,006 INFO L226 Difference]: Without dead ends: 992 [2025-03-16 18:31:41,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:31:41,010 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 782 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:41,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2074 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2025-03-16 18:31:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 992. [2025-03-16 18:31:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 772 states have (on average 1.6308290155440415) internal successors, (1259), 798 states have internal predecessors, (1259), 170 states have call successors, (170), 51 states have call predecessors, (170), 49 states have return successors, (179), 157 states have call predecessors, (179), 168 states have call successors, (179) [2025-03-16 18:31:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1608 transitions. [2025-03-16 18:31:41,043 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1608 transitions. Word has length 127 [2025-03-16 18:31:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:41,043 INFO L471 AbstractCegarLoop]: Abstraction has 992 states and 1608 transitions. [2025-03-16 18:31:41,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1608 transitions. [2025-03-16 18:31:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-16 18:31:41,045 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:41,046 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:41,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:41,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 18:31:41,246 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:41,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2100502054, now seen corresponding path program 1 times [2025-03-16 18:31:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:41,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904577799] [2025-03-16 18:31:41,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:41,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-16 18:31:41,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-16 18:31:41,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:41,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:31:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:41,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904577799] [2025-03-16 18:31:41,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904577799] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:41,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120683162] [2025-03-16 18:31:41,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:41,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:41,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:41,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:31:41,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-16 18:31:41,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-16 18:31:41,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:41,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:41,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:41,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-16 18:31:41,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120683162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20366576] [2025-03-16 18:31:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:41,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:41,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:41,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:41,713 INFO L87 Difference]: Start difference. First operand 992 states and 1608 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:42,152 INFO L93 Difference]: Finished difference Result 1961 states and 3239 transitions. [2025-03-16 18:31:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:42,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2025-03-16 18:31:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:42,158 INFO L225 Difference]: With dead ends: 1961 [2025-03-16 18:31:42,159 INFO L226 Difference]: Without dead ends: 1008 [2025-03-16 18:31:42,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:31:42,164 INFO L435 NwaCegarLoop]: 813 mSDtfsCounter, 773 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:42,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 2071 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2025-03-16 18:31:42,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2025-03-16 18:31:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 786 states have (on average 1.6323155216284988) internal successors, (1283), 812 states have internal predecessors, (1283), 170 states have call successors, (170), 53 states have call predecessors, (170), 51 states have return successors, (181), 157 states have call predecessors, (181), 168 states have call successors, (181) [2025-03-16 18:31:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1634 transitions. [2025-03-16 18:31:42,202 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1634 transitions. Word has length 130 [2025-03-16 18:31:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:42,202 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1634 transitions. [2025-03-16 18:31:42,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1634 transitions. [2025-03-16 18:31:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-16 18:31:42,205 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:42,205 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:42,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:42,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-16 18:31:42,406 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:42,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:42,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2102486926, now seen corresponding path program 1 times [2025-03-16 18:31:42,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:42,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334150200] [2025-03-16 18:31:42,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:42,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:42,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-16 18:31:42,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-16 18:31:42,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:42,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 18:31:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334150200] [2025-03-16 18:31:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334150200] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728106268] [2025-03-16 18:31:42,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:42,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:42,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:42,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:42,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:31:42,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-16 18:31:42,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-16 18:31:42,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:42,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:42,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:42,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:31:42,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:42,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728106268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:42,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:42,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538299291] [2025-03-16 18:31:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:42,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:42,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:42,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:42,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:42,876 INFO L87 Difference]: Start difference. First operand 1008 states and 1634 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:43,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:43,339 INFO L93 Difference]: Finished difference Result 1993 states and 3285 transitions. [2025-03-16 18:31:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:43,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2025-03-16 18:31:43,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:43,347 INFO L225 Difference]: With dead ends: 1993 [2025-03-16 18:31:43,347 INFO L226 Difference]: Without dead ends: 1024 [2025-03-16 18:31:43,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:31:43,353 INFO L435 NwaCegarLoop]: 810 mSDtfsCounter, 765 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:43,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2068 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:43,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2025-03-16 18:31:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2025-03-16 18:31:43,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 800 states have (on average 1.63375) internal successors, (1307), 826 states have internal predecessors, (1307), 170 states have call successors, (170), 55 states have call predecessors, (170), 53 states have return successors, (183), 157 states have call predecessors, (183), 168 states have call successors, (183) [2025-03-16 18:31:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1660 transitions. [2025-03-16 18:31:43,398 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1660 transitions. Word has length 133 [2025-03-16 18:31:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:43,399 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1660 transitions. [2025-03-16 18:31:43,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1660 transitions. [2025-03-16 18:31:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 18:31:43,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:43,403 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:43,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:43,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:43,604 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:43,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash 651239808, now seen corresponding path program 1 times [2025-03-16 18:31:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356059726] [2025-03-16 18:31:43,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:43,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:43,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:31:43,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:31:43,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:43,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-16 18:31:43,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:43,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356059726] [2025-03-16 18:31:43,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356059726] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:43,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125148497] [2025-03-16 18:31:43,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:43,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:43,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:43,834 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:43,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 18:31:43,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:31:44,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:31:44,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:44,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:44,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:31:44,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-16 18:31:44,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:44,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125148497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:44,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:44,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2025-03-16 18:31:44,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532797512] [2025-03-16 18:31:44,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:44,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:44,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:44,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:44,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:31:44,145 INFO L87 Difference]: Start difference. First operand 1024 states and 1660 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:31:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:44,494 INFO L93 Difference]: Finished difference Result 2602 states and 4228 transitions. [2025-03-16 18:31:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:44,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2025-03-16 18:31:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:44,504 INFO L225 Difference]: With dead ends: 2602 [2025-03-16 18:31:44,504 INFO L226 Difference]: Without dead ends: 1617 [2025-03-16 18:31:44,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:31:44,510 INFO L435 NwaCegarLoop]: 1069 mSDtfsCounter, 797 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 4245 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:44,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 4245 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:31:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2025-03-16 18:31:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1615. [2025-03-16 18:31:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1262 states have (on average 1.6085578446909667) internal successors, (2030), 1291 states have internal predecessors, (2030), 261 states have call successors, (261), 95 states have call predecessors, (261), 91 states have return successors, (307), 244 states have call predecessors, (307), 257 states have call successors, (307) [2025-03-16 18:31:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2598 transitions. [2025-03-16 18:31:44,569 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2598 transitions. Word has length 135 [2025-03-16 18:31:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:44,570 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2598 transitions. [2025-03-16 18:31:44,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:31:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2598 transitions. [2025-03-16 18:31:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-16 18:31:44,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:44,574 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:44,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 18:31:44,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:44,778 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:44,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash 742817660, now seen corresponding path program 1 times [2025-03-16 18:31:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803660216] [2025-03-16 18:31:44,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:44,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-16 18:31:44,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-16 18:31:44,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:44,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:31:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803660216] [2025-03-16 18:31:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803660216] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097812036] [2025-03-16 18:31:44,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:44,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:44,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:44,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:44,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 18:31:44,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-16 18:31:45,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-16 18:31:45,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:45,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:45,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:31:45,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:31:45,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:45,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097812036] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:45,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:45,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-16 18:31:45,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417831874] [2025-03-16 18:31:45,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:45,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:45,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:45,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:45,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:31:45,207 INFO L87 Difference]: Start difference. First operand 1615 states and 2598 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:45,601 INFO L93 Difference]: Finished difference Result 3199 states and 5296 transitions. [2025-03-16 18:31:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:45,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2025-03-16 18:31:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:45,611 INFO L225 Difference]: With dead ends: 3199 [2025-03-16 18:31:45,611 INFO L226 Difference]: Without dead ends: 1623 [2025-03-16 18:31:45,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:45,620 INFO L435 NwaCegarLoop]: 810 mSDtfsCounter, 760 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:45,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 2068 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:31:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2025-03-16 18:31:45,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1623. [2025-03-16 18:31:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1266 states have (on average 1.5939968404423381) internal successors, (2018), 1299 states have internal predecessors, (2018), 261 states have call successors, (261), 95 states have call predecessors, (261), 95 states have return successors, (311), 244 states have call predecessors, (311), 257 states have call successors, (311) [2025-03-16 18:31:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2590 transitions. [2025-03-16 18:31:45,674 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2590 transitions. Word has length 136 [2025-03-16 18:31:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:45,674 INFO L471 AbstractCegarLoop]: Abstraction has 1623 states and 2590 transitions. [2025-03-16 18:31:45,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2590 transitions. [2025-03-16 18:31:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-16 18:31:45,682 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:45,682 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:45,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 18:31:45,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:45,886 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:45,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:45,887 INFO L85 PathProgramCache]: Analyzing trace with hash -184441982, now seen corresponding path program 1 times [2025-03-16 18:31:45,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:45,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698921110] [2025-03-16 18:31:45,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:45,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:45,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-16 18:31:45,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-16 18:31:45,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:45,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-16 18:31:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698921110] [2025-03-16 18:31:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698921110] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584917117] [2025-03-16 18:31:46,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:46,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:46,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:46,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:46,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 18:31:46,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-16 18:31:46,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-16 18:31:46,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:46,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:46,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 18:31:46,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:31:46,461 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:46,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584917117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:46,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:46,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-16 18:31:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108086356] [2025-03-16 18:31:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:46,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:46,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:46,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:31:46,463 INFO L87 Difference]: Start difference. First operand 1623 states and 2590 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-16 18:31:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:47,736 INFO L93 Difference]: Finished difference Result 3328 states and 5315 transitions. [2025-03-16 18:31:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 136 [2025-03-16 18:31:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:47,747 INFO L225 Difference]: With dead ends: 3328 [2025-03-16 18:31:47,747 INFO L226 Difference]: Without dead ends: 1747 [2025-03-16 18:31:47,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:31:47,755 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 1717 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:47,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 906 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 18:31:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2025-03-16 18:31:47,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1617. [2025-03-16 18:31:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1208 states have (on average 1.5529801324503312) internal successors, (1876), 1261 states have internal predecessors, (1876), 313 states have call successors, (313), 87 states have call predecessors, (313), 95 states have return successors, (363), 294 states have call predecessors, (363), 309 states have call successors, (363) [2025-03-16 18:31:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2552 transitions. [2025-03-16 18:31:47,832 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2552 transitions. Word has length 136 [2025-03-16 18:31:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:47,832 INFO L471 AbstractCegarLoop]: Abstraction has 1617 states and 2552 transitions. [2025-03-16 18:31:47,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-16 18:31:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2552 transitions. [2025-03-16 18:31:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-16 18:31:47,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:47,837 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:47,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:48,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:48,038 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:48,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1965941917, now seen corresponding path program 1 times [2025-03-16 18:31:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608073770] [2025-03-16 18:31:48,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:48,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-16 18:31:48,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-16 18:31:48,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:48,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-16 18:31:48,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608073770] [2025-03-16 18:31:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608073770] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654296657] [2025-03-16 18:31:48,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:48,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:48,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:48,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:48,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 18:31:48,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-16 18:31:48,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-16 18:31:48,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:48,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:48,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-16 18:31:48,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:31:48,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654296657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:48,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-03-16 18:31:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619121458] [2025-03-16 18:31:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:48,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:31:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:48,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:31:48,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:31:48,604 INFO L87 Difference]: Start difference. First operand 1617 states and 2552 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-16 18:31:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:50,976 INFO L93 Difference]: Finished difference Result 5822 states and 9390 transitions. [2025-03-16 18:31:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-16 18:31:50,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 136 [2025-03-16 18:31:50,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:50,998 INFO L225 Difference]: With dead ends: 5822 [2025-03-16 18:31:50,998 INFO L226 Difference]: Without dead ends: 4242 [2025-03-16 18:31:51,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-03-16 18:31:51,007 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 2350 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 4853 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 5394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 4853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:51,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 2114 Invalid, 5394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 4853 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 18:31:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2025-03-16 18:31:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 3689. [2025-03-16 18:31:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 2761 states have (on average 1.5548714233973198) internal successors, (4293), 2882 states have internal predecessors, (4293), 696 states have call successors, (696), 191 states have call predecessors, (696), 231 states have return successors, (899), 667 states have call predecessors, (899), 688 states have call successors, (899) [2025-03-16 18:31:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5888 transitions. [2025-03-16 18:31:51,192 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5888 transitions. Word has length 136 [2025-03-16 18:31:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:51,192 INFO L471 AbstractCegarLoop]: Abstraction has 3689 states and 5888 transitions. [2025-03-16 18:31:51,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-16 18:31:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5888 transitions. [2025-03-16 18:31:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-16 18:31:51,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:51,197 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:51,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 18:31:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-16 18:31:51,401 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash -592673315, now seen corresponding path program 1 times [2025-03-16 18:31:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554589968] [2025-03-16 18:31:51,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:51,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:31:51,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:31:51,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:51,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-16 18:31:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554589968] [2025-03-16 18:31:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554589968] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612604462] [2025-03-16 18:31:51,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:51,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:51,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:51,606 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:51,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 18:31:51,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:31:51,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:31:51,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:51,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:51,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-16 18:31:51,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:31:51,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612604462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:51,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-16 18:31:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927486777] [2025-03-16 18:31:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:51,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:31:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:51,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:31:51,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:31:51,911 INFO L87 Difference]: Start difference. First operand 3689 states and 5888 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-16 18:31:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:54,693 INFO L93 Difference]: Finished difference Result 10065 states and 16394 transitions. [2025-03-16 18:31:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-16 18:31:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 138 [2025-03-16 18:31:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:54,727 INFO L225 Difference]: With dead ends: 10065 [2025-03-16 18:31:54,728 INFO L226 Difference]: Without dead ends: 6417 [2025-03-16 18:31:54,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2025-03-16 18:31:54,741 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 2707 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 5778 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2809 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 6475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 5778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:54,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2809 Valid, 2064 Invalid, 6475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 5778 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 18:31:54,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6417 states. [2025-03-16 18:31:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6417 to 5819. [2025-03-16 18:31:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5819 states, 4358 states have (on average 1.5527765029830198) internal successors, (6767), 4556 states have internal predecessors, (6767), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 376 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2025-03-16 18:31:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5819 states to 5819 states and 9371 transitions. [2025-03-16 18:31:55,011 INFO L78 Accepts]: Start accepts. Automaton has 5819 states and 9371 transitions. Word has length 138 [2025-03-16 18:31:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:55,011 INFO L471 AbstractCegarLoop]: Abstraction has 5819 states and 9371 transitions. [2025-03-16 18:31:55,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-16 18:31:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5819 states and 9371 transitions. [2025-03-16 18:31:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-16 18:31:55,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:55,015 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:55,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:55,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-16 18:31:55,216 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:55,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1516374960, now seen corresponding path program 1 times [2025-03-16 18:31:55,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:55,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472074422] [2025-03-16 18:31:55,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:55,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:55,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 18:31:55,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 18:31:55,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:55,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-16 18:31:55,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:55,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472074422] [2025-03-16 18:31:55,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472074422] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:55,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366881182] [2025-03-16 18:31:55,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:55,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:55,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:55,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:55,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 18:31:55,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 18:31:55,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 18:31:55,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:55,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:55,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 18:31:55,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:31:55,771 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366881182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:55,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-16 18:31:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978396151] [2025-03-16 18:31:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:55,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:55,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:55,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:31:55,772 INFO L87 Difference]: Start difference. First operand 5819 states and 9371 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 18:31:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:56,074 INFO L93 Difference]: Finished difference Result 5821 states and 9372 transitions. [2025-03-16 18:31:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2025-03-16 18:31:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:56,095 INFO L225 Difference]: With dead ends: 5821 [2025-03-16 18:31:56,095 INFO L226 Difference]: Without dead ends: 5819 [2025-03-16 18:31:56,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:31:56,097 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 352 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:56,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 4204 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2025-03-16 18:31:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 5819. [2025-03-16 18:31:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5819 states, 4358 states have (on average 1.5461220743460302) internal successors, (6738), 4556 states have internal predecessors, (6738), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 376 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2025-03-16 18:31:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5819 states to 5819 states and 9342 transitions. [2025-03-16 18:31:56,299 INFO L78 Accepts]: Start accepts. Automaton has 5819 states and 9342 transitions. Word has length 143 [2025-03-16 18:31:56,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:56,299 INFO L471 AbstractCegarLoop]: Abstraction has 5819 states and 9342 transitions. [2025-03-16 18:31:56,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 18:31:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5819 states and 9342 transitions. [2025-03-16 18:31:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-16 18:31:56,305 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:56,305 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:56,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:56,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-16 18:31:56,505 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:56,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1249925333, now seen corresponding path program 1 times [2025-03-16 18:31:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082737429] [2025-03-16 18:31:56,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:56,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:56,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 18:31:56,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 18:31:56,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:56,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2025-03-16 18:31:56,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:56,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082737429] [2025-03-16 18:31:56,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082737429] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:56,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251351097] [2025-03-16 18:31:56,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:56,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:56,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:56,722 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:56,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 18:31:56,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 18:31:56,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 18:31:56,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:56,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:56,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:56,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 18:31:56,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251351097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:56,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:56,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:31:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574590363] [2025-03-16 18:31:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:56,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:56,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:56,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:56,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:31:56,970 INFO L87 Difference]: Start difference. First operand 5819 states and 9342 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:31:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:57,255 INFO L93 Difference]: Finished difference Result 11867 states and 19298 transitions. [2025-03-16 18:31:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:57,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2025-03-16 18:31:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:57,297 INFO L225 Difference]: With dead ends: 11867 [2025-03-16 18:31:57,297 INFO L226 Difference]: Without dead ends: 6089 [2025-03-16 18:31:57,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:31:57,316 INFO L435 NwaCegarLoop]: 777 mSDtfsCounter, 144 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2308 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 [2025-03-16 18:31:57,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2308 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2025-03-16 18:31:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 6053. [2025-03-16 18:31:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6053 states, 4586 states have (on average 1.5647623201046663) internal successors, (7176), 4784 states have internal predecessors, (7176), 1084 states have call successors, (1084), 297 states have call predecessors, (1084), 382 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2025-03-16 18:31:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6053 states to 6053 states and 9780 transitions. [2025-03-16 18:31:57,567 INFO L78 Accepts]: Start accepts. Automaton has 6053 states and 9780 transitions. Word has length 166 [2025-03-16 18:31:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:57,567 INFO L471 AbstractCegarLoop]: Abstraction has 6053 states and 9780 transitions. [2025-03-16 18:31:57,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:31:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 6053 states and 9780 transitions. [2025-03-16 18:31:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 18:31:57,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:57,573 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:57,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:57,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-16 18:31:57,775 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:57,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash 523045461, now seen corresponding path program 1 times [2025-03-16 18:31:57,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:57,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625701382] [2025-03-16 18:31:57,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:57,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:57,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 18:31:57,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 18:31:57,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:57,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-03-16 18:31:58,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:58,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625701382] [2025-03-16 18:31:58,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625701382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:58,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281654144] [2025-03-16 18:31:58,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:58,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:58,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:58,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 18:31:58,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 18:31:58,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 18:31:58,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:58,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:58,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:58,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:31:58,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281654144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:58,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:31:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749849107] [2025-03-16 18:31:58,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:58,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:58,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:58,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:31:58,287 INFO L87 Difference]: Start difference. First operand 6053 states and 9780 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:31:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:58,617 INFO L93 Difference]: Finished difference Result 12353 states and 20174 transitions. [2025-03-16 18:31:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2025-03-16 18:31:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:58,644 INFO L225 Difference]: With dead ends: 12353 [2025-03-16 18:31:58,644 INFO L226 Difference]: Without dead ends: 6341 [2025-03-16 18:31:58,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:31:58,664 INFO L435 NwaCegarLoop]: 776 mSDtfsCounter, 142 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2305 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 [2025-03-16 18:31:58,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2305 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6341 states. [2025-03-16 18:31:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6341 to 6287. [2025-03-16 18:31:58,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6287 states, 4814 states have (on average 1.5816368923971749) internal successors, (7614), 5012 states have internal predecessors, (7614), 1084 states have call successors, (1084), 303 states have call predecessors, (1084), 388 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2025-03-16 18:31:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 10218 transitions. [2025-03-16 18:31:58,874 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 10218 transitions. Word has length 171 [2025-03-16 18:31:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:58,874 INFO L471 AbstractCegarLoop]: Abstraction has 6287 states and 10218 transitions. [2025-03-16 18:31:58,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:31:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 10218 transitions. [2025-03-16 18:31:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-16 18:31:58,879 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:58,879 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:58,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:59,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-16 18:31:59,080 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:59,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1974333429, now seen corresponding path program 1 times [2025-03-16 18:31:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:59,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954017337] [2025-03-16 18:31:59,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:59,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:59,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-16 18:31:59,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-16 18:31:59,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:59,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-16 18:31:59,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954017337] [2025-03-16 18:31:59,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954017337] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:59,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077664797] [2025-03-16 18:31:59,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:59,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:59,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:59,278 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:31:59,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 18:31:59,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-16 18:31:59,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-16 18:31:59,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:59,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:59,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:59,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-16 18:31:59,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:59,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077664797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:59,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:59,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:31:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483348118] [2025-03-16 18:31:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:59,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:59,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:59,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:31:59,580 INFO L87 Difference]: Start difference. First operand 6287 states and 10218 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:31:59,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:59,855 INFO L93 Difference]: Finished difference Result 12839 states and 21050 transitions. [2025-03-16 18:31:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:59,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2025-03-16 18:31:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:59,886 INFO L225 Difference]: With dead ends: 12839 [2025-03-16 18:31:59,886 INFO L226 Difference]: Without dead ends: 6593 [2025-03-16 18:31:59,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:31:59,906 INFO L435 NwaCegarLoop]: 775 mSDtfsCounter, 140 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2302 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 [2025-03-16 18:31:59,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2302 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2025-03-16 18:32:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 6521. [2025-03-16 18:32:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6521 states, 5042 states have (on average 1.596985323284411) internal successors, (8052), 5240 states have internal predecessors, (8052), 1084 states have call successors, (1084), 309 states have call predecessors, (1084), 394 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2025-03-16 18:32:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6521 states to 6521 states and 10656 transitions. [2025-03-16 18:32:00,156 INFO L78 Accepts]: Start accepts. Automaton has 6521 states and 10656 transitions. Word has length 175 [2025-03-16 18:32:00,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:00,156 INFO L471 AbstractCegarLoop]: Abstraction has 6521 states and 10656 transitions. [2025-03-16 18:32:00,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:32:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 6521 states and 10656 transitions. [2025-03-16 18:32:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-16 18:32:00,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:00,161 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:00,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:00,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-16 18:32:00,362 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:00,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1453449331, now seen corresponding path program 1 times [2025-03-16 18:32:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332473297] [2025-03-16 18:32:00,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:00,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-16 18:32:00,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-16 18:32:00,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:00,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-03-16 18:32:00,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:00,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332473297] [2025-03-16 18:32:00,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332473297] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:00,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133963314] [2025-03-16 18:32:00,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:00,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:00,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:00,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:00,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 18:32:00,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-16 18:32:00,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-16 18:32:00,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:00,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:00,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-16 18:32:00,842 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133963314] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:00,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46851402] [2025-03-16 18:32:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:00,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:00,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:00,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:00,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:00,843 INFO L87 Difference]: Start difference. First operand 6521 states and 10656 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:32:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:01,253 INFO L93 Difference]: Finished difference Result 13325 states and 21926 transitions. [2025-03-16 18:32:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:01,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2025-03-16 18:32:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:01,289 INFO L225 Difference]: With dead ends: 13325 [2025-03-16 18:32:01,289 INFO L226 Difference]: Without dead ends: 6845 [2025-03-16 18:32:01,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:32:01,314 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 138 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2299 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 [2025-03-16 18:32:01,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2299 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2025-03-16 18:32:01,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 6755. [2025-03-16 18:32:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6755 states, 5270 states have (on average 1.6110056925996206) internal successors, (8490), 5468 states have internal predecessors, (8490), 1084 states have call successors, (1084), 315 states have call predecessors, (1084), 400 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2025-03-16 18:32:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6755 states to 6755 states and 11094 transitions. [2025-03-16 18:32:01,634 INFO L78 Accepts]: Start accepts. Automaton has 6755 states and 11094 transitions. Word has length 178 [2025-03-16 18:32:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:01,634 INFO L471 AbstractCegarLoop]: Abstraction has 6755 states and 11094 transitions. [2025-03-16 18:32:01,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:32:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6755 states and 11094 transitions. [2025-03-16 18:32:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-16 18:32:01,638 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:01,638 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:01,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:01,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:01,839 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:01,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:01,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1849926499, now seen corresponding path program 1 times [2025-03-16 18:32:01,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:01,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050965563] [2025-03-16 18:32:01,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:01,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:01,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 18:32:01,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 18:32:01,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:01,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-03-16 18:32:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:02,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050965563] [2025-03-16 18:32:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050965563] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:02,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251338838] [2025-03-16 18:32:02,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:02,075 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:02,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 18:32:02,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 18:32:02,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 18:32:02,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:02,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:02,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:02,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-03-16 18:32:02,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:02,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251338838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:02,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:02,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:02,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988368351] [2025-03-16 18:32:02,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:02,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:02,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:02,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:02,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:02,358 INFO L87 Difference]: Start difference. First operand 6755 states and 11094 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:32:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:02,658 INFO L93 Difference]: Finished difference Result 13811 states and 22802 transitions. [2025-03-16 18:32:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 180 [2025-03-16 18:32:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:02,691 INFO L225 Difference]: With dead ends: 13811 [2025-03-16 18:32:02,691 INFO L226 Difference]: Without dead ends: 7097 [2025-03-16 18:32:02,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:32:02,712 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 136 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:02,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2292 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2025-03-16 18:32:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 6989. [2025-03-16 18:32:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6989 states, 5498 states have (on average 1.6238632229901782) internal successors, (8928), 5696 states have internal predecessors, (8928), 1084 states have call successors, (1084), 321 states have call predecessors, (1084), 406 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2025-03-16 18:32:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6989 states to 6989 states and 11532 transitions. [2025-03-16 18:32:02,935 INFO L78 Accepts]: Start accepts. Automaton has 6989 states and 11532 transitions. Word has length 180 [2025-03-16 18:32:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:02,936 INFO L471 AbstractCegarLoop]: Abstraction has 6989 states and 11532 transitions. [2025-03-16 18:32:02,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:32:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6989 states and 11532 transitions. [2025-03-16 18:32:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-16 18:32:02,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:02,940 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:02,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:03,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:03,140 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:03,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2091267009, now seen corresponding path program 1 times [2025-03-16 18:32:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108040887] [2025-03-16 18:32:03,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:03,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 18:32:03,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 18:32:03,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:03,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-03-16 18:32:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108040887] [2025-03-16 18:32:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108040887] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624003216] [2025-03-16 18:32:03,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:03,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:03,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:03,349 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:03,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 18:32:03,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 18:32:03,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 18:32:03,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:03,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:03,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-16 18:32:03,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-16 18:32:03,697 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:03,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624003216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:03,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:03,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2025-03-16 18:32:03,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237988632] [2025-03-16 18:32:03,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:03,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:32:03,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:03,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:32:03,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:32:03,698 INFO L87 Difference]: Start difference. First operand 6989 states and 11532 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2025-03-16 18:32:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:05,705 INFO L93 Difference]: Finished difference Result 21721 states and 36414 transitions. [2025-03-16 18:32:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:32:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 180 [2025-03-16 18:32:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:05,762 INFO L225 Difference]: With dead ends: 21721 [2025-03-16 18:32:05,762 INFO L226 Difference]: Without dead ends: 11449 [2025-03-16 18:32:05,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2025-03-16 18:32:05,790 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 1919 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 4356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:05,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 2246 Invalid, 4356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-16 18:32:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11449 states. [2025-03-16 18:32:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11449 to 11316. [2025-03-16 18:32:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11316 states, 8802 states have (on average 1.6214496705294252) internal successors, (14272), 9181 states have internal predecessors, (14272), 1815 states have call successors, (1815), 507 states have call predecessors, (1815), 698 states have return successors, (2625), 1776 states have call predecessors, (2625), 1807 states have call successors, (2625) [2025-03-16 18:32:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11316 states to 11316 states and 18712 transitions. [2025-03-16 18:32:06,168 INFO L78 Accepts]: Start accepts. Automaton has 11316 states and 18712 transitions. Word has length 180 [2025-03-16 18:32:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:06,168 INFO L471 AbstractCegarLoop]: Abstraction has 11316 states and 18712 transitions. [2025-03-16 18:32:06,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2025-03-16 18:32:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11316 states and 18712 transitions. [2025-03-16 18:32:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-03-16 18:32:06,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:06,176 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:06,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:06,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:06,377 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:06,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1167813987, now seen corresponding path program 1 times [2025-03-16 18:32:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:06,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820072613] [2025-03-16 18:32:06,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:06,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-03-16 18:32:06,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-03-16 18:32:06,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:06,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-03-16 18:32:06,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:06,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820072613] [2025-03-16 18:32:06,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820072613] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:06,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:06,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:32:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198242131] [2025-03-16 18:32:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:06,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:32:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:06,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:32:06,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:32:06,561 INFO L87 Difference]: Start difference. First operand 11316 states and 18712 transitions. Second operand has 8 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:32:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:07,046 INFO L93 Difference]: Finished difference Result 22333 states and 36939 transitions. [2025-03-16 18:32:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:32:07,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 183 [2025-03-16 18:32:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:07,095 INFO L225 Difference]: With dead ends: 22333 [2025-03-16 18:32:07,095 INFO L226 Difference]: Without dead ends: 10698 [2025-03-16 18:32:07,129 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 [2025-03-16 18:32:07,129 INFO L435 NwaCegarLoop]: 815 mSDtfsCounter, 33 mSDsluCounter, 4858 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 5673 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:07,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 5673 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2025-03-16 18:32:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 10674. [2025-03-16 18:32:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10674 states, 8395 states have (on average 1.63394877903514) internal successors, (13717), 8749 states have internal predecessors, (13717), 1630 states have call successors, (1630), 483 states have call predecessors, (1630), 648 states have return successors, (2273), 1570 states have call predecessors, (2273), 1622 states have call successors, (2273) [2025-03-16 18:32:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10674 states to 10674 states and 17620 transitions. [2025-03-16 18:32:07,643 INFO L78 Accepts]: Start accepts. Automaton has 10674 states and 17620 transitions. Word has length 183 [2025-03-16 18:32:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:07,643 INFO L471 AbstractCegarLoop]: Abstraction has 10674 states and 17620 transitions. [2025-03-16 18:32:07,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:32:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 10674 states and 17620 transitions. [2025-03-16 18:32:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2025-03-16 18:32:07,654 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:07,654 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:07,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 18:32:07,655 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:07,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1390014733, now seen corresponding path program 1 times [2025-03-16 18:32:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093379286] [2025-03-16 18:32:07,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:07,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 525 statements into 1 equivalence classes. [2025-03-16 18:32:07,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 525 of 525 statements. [2025-03-16 18:32:07,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:07,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2025-03-16 18:32:08,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093379286] [2025-03-16 18:32:08,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093379286] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421060087] [2025-03-16 18:32:08,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:08,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:08,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:08,241 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:08,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 18:32:08,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 525 statements into 1 equivalence classes. [2025-03-16 18:32:08,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 525 of 525 statements. [2025-03-16 18:32:08,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:08,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:08,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:32:08,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2025-03-16 18:32:08,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421060087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:08,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:08,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-16 18:32:08,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280275061] [2025-03-16 18:32:08,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:08,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:32:08,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:08,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:32:08,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:08,714 INFO L87 Difference]: Start difference. First operand 10674 states and 17620 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2025-03-16 18:32:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:09,196 INFO L93 Difference]: Finished difference Result 21842 states and 36482 transitions. [2025-03-16 18:32:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:32:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 525 [2025-03-16 18:32:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:09,268 INFO L225 Difference]: With dead ends: 21842 [2025-03-16 18:32:09,268 INFO L226 Difference]: Without dead ends: 16258 [2025-03-16 18:32:09,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:09,298 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 835 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:09,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1655 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16258 states. [2025-03-16 18:32:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16258 to 16256. [2025-03-16 18:32:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16256 states, 12732 states have (on average 1.633286207979893) internal successors, (20795), 13297 states have internal predecessors, (20795), 2542 states have call successors, (2542), 733 states have call predecessors, (2542), 981 states have return successors, (3708), 2483 states have call predecessors, (3708), 2530 states have call successors, (3708) [2025-03-16 18:32:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16256 states to 16256 states and 27045 transitions. [2025-03-16 18:32:09,960 INFO L78 Accepts]: Start accepts. Automaton has 16256 states and 27045 transitions. Word has length 525 [2025-03-16 18:32:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:09,960 INFO L471 AbstractCegarLoop]: Abstraction has 16256 states and 27045 transitions. [2025-03-16 18:32:09,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2025-03-16 18:32:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 16256 states and 27045 transitions. [2025-03-16 18:32:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2025-03-16 18:32:10,024 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:10,025 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:10,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-16 18:32:10,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:10,225 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:10,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1971215870, now seen corresponding path program 1 times [2025-03-16 18:32:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946068862] [2025-03-16 18:32:10,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:10,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:10,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 526 statements into 1 equivalence classes. [2025-03-16 18:32:10,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 526 of 526 statements. [2025-03-16 18:32:10,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:10,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2025-03-16 18:32:10,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946068862] [2025-03-16 18:32:10,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946068862] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419794953] [2025-03-16 18:32:10,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:10,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:10,623 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:10,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 18:32:10,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 526 statements into 1 equivalence classes. [2025-03-16 18:32:11,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 526 of 526 statements. [2025-03-16 18:32:11,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:11,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:11,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 4033 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:11,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2025-03-16 18:32:11,137 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:11,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419794953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:11,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:11,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337245546] [2025-03-16 18:32:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:11,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:11,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:11,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:11,139 INFO L87 Difference]: Start difference. First operand 16256 states and 27045 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2025-03-16 18:32:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:11,740 INFO L93 Difference]: Finished difference Result 32609 states and 54774 transitions. [2025-03-16 18:32:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 526 [2025-03-16 18:32:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:11,813 INFO L225 Difference]: With dead ends: 32609 [2025-03-16 18:32:11,813 INFO L226 Difference]: Without dead ends: 16391 [2025-03-16 18:32:11,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:32:11,869 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 22 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:11,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2433 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16391 states. [2025-03-16 18:32:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16391 to 16391. [2025-03-16 18:32:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16391 states, 12852 states have (on average 1.6343759726112668) internal successors, (21005), 13417 states have internal predecessors, (21005), 2542 states have call successors, (2542), 748 states have call predecessors, (2542), 996 states have return successors, (3708), 2483 states have call predecessors, (3708), 2530 states have call successors, (3708) [2025-03-16 18:32:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16391 states to 16391 states and 27255 transitions. [2025-03-16 18:32:12,716 INFO L78 Accepts]: Start accepts. Automaton has 16391 states and 27255 transitions. Word has length 526 [2025-03-16 18:32:12,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:12,717 INFO L471 AbstractCegarLoop]: Abstraction has 16391 states and 27255 transitions. [2025-03-16 18:32:12,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2025-03-16 18:32:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 16391 states and 27255 transitions. [2025-03-16 18:32:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2025-03-16 18:32:12,731 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:12,731 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:12,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:12,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:12,932 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:12,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1275180821, now seen corresponding path program 1 times [2025-03-16 18:32:12,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:12,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374748328] [2025-03-16 18:32:12,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:12,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:12,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 527 statements into 1 equivalence classes. [2025-03-16 18:32:12,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 527 of 527 statements. [2025-03-16 18:32:12,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:12,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2025-03-16 18:32:13,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374748328] [2025-03-16 18:32:13,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374748328] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541134857] [2025-03-16 18:32:13,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:13,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:13,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:13,390 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:13,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-16 18:32:13,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 527 statements into 1 equivalence classes. [2025-03-16 18:32:13,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 527 of 527 statements. [2025-03-16 18:32:13,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:13,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:13,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 4034 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:13,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2025-03-16 18:32:13,856 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541134857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145320737] [2025-03-16 18:32:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:13,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:13,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:13,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:13,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:13,857 INFO L87 Difference]: Start difference. First operand 16391 states and 27255 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2025-03-16 18:32:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:14,410 INFO L93 Difference]: Finished difference Result 32879 states and 55134 transitions. [2025-03-16 18:32:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:14,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 527 [2025-03-16 18:32:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:14,474 INFO L225 Difference]: With dead ends: 32879 [2025-03-16 18:32:14,474 INFO L226 Difference]: Without dead ends: 16526 [2025-03-16 18:32:14,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:32:14,512 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 20 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:14,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2427 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2025-03-16 18:32:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 16526. [2025-03-16 18:32:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 12972 states have (on average 1.635445575084798) internal successors, (21215), 13537 states have internal predecessors, (21215), 2542 states have call successors, (2542), 763 states have call predecessors, (2542), 1011 states have return successors, (3708), 2483 states have call predecessors, (3708), 2530 states have call successors, (3708) [2025-03-16 18:32:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 27465 transitions. [2025-03-16 18:32:15,031 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 27465 transitions. Word has length 527 [2025-03-16 18:32:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:15,032 INFO L471 AbstractCegarLoop]: Abstraction has 16526 states and 27465 transitions. [2025-03-16 18:32:15,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2025-03-16 18:32:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 27465 transitions. [2025-03-16 18:32:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2025-03-16 18:32:15,042 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:15,042 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:15,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-16 18:32:15,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:15,247 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:15,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:15,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1444295265, now seen corresponding path program 1 times [2025-03-16 18:32:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:15,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683826680] [2025-03-16 18:32:15,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:15,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:15,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 527 statements into 1 equivalence classes. [2025-03-16 18:32:15,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 527 of 527 statements. [2025-03-16 18:32:15,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:15,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2025-03-16 18:32:15,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:15,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683826680] [2025-03-16 18:32:15,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683826680] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:15,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488715975] [2025-03-16 18:32:15,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:15,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:15,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:15,669 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:15,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-16 18:32:15,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 527 statements into 1 equivalence classes. [2025-03-16 18:32:16,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 527 of 527 statements. [2025-03-16 18:32:16,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:16,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:16,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 4034 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:32:16,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 757 proven. 270 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2025-03-16 18:32:16,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 18:32:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 133 proven. 36 refuted. 0 times theorem prover too weak. 1214 trivial. 0 not checked. [2025-03-16 18:32:16,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488715975] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 18:32:16,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 18:32:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 16 [2025-03-16 18:32:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609198807] [2025-03-16 18:32:16,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 18:32:16,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 18:32:16,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:16,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 18:32:16,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:32:16,895 INFO L87 Difference]: Start difference. First operand 16526 states and 27465 transitions. Second operand has 16 states, 16 states have (on average 26.9375) internal successors, (431), 14 states have internal predecessors, (431), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) [2025-03-16 18:32:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:28,988 INFO L93 Difference]: Finished difference Result 77514 states and 135597 transitions. [2025-03-16 18:32:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-16 18:32:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 26.9375) internal successors, (431), 14 states have internal predecessors, (431), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) Word has length 527 [2025-03-16 18:32:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:29,275 INFO L225 Difference]: With dead ends: 77514 [2025-03-16 18:32:29,275 INFO L226 Difference]: Without dead ends: 60952 [2025-03-16 18:32:29,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 1071 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=562, Invalid=3344, Unknown=0, NotChecked=0, Total=3906 [2025-03-16 18:32:29,379 INFO L435 NwaCegarLoop]: 1277 mSDtfsCounter, 11542 mSDsluCounter, 7295 mSDsCounter, 0 mSdLazyCounter, 26038 mSolverCounterSat, 4574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11542 SdHoareTripleChecker+Valid, 8572 SdHoareTripleChecker+Invalid, 30612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4574 IncrementalHoareTripleChecker+Valid, 26038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:29,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11542 Valid, 8572 Invalid, 30612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4574 Valid, 26038 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2025-03-16 18:32:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60952 states. [2025-03-16 18:32:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60952 to 52218. [2025-03-16 18:32:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52218 states, 39543 states have (on average 1.6095389828793971) internal successors, (63646), 41754 states have internal predecessors, (63646), 9530 states have call successors, (9530), 2232 states have call predecessors, (9530), 3144 states have return successors, (15133), 9567 states have call predecessors, (15133), 9510 states have call successors, (15133) [2025-03-16 18:32:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52218 states to 52218 states and 88309 transitions. [2025-03-16 18:32:32,018 INFO L78 Accepts]: Start accepts. Automaton has 52218 states and 88309 transitions. Word has length 527 [2025-03-16 18:32:32,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:32,018 INFO L471 AbstractCegarLoop]: Abstraction has 52218 states and 88309 transitions. [2025-03-16 18:32:32,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 26.9375) internal successors, (431), 14 states have internal predecessors, (431), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) [2025-03-16 18:32:32,019 INFO L276 IsEmpty]: Start isEmpty. Operand 52218 states and 88309 transitions. [2025-03-16 18:32:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2025-03-16 18:32:32,032 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:32,033 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:32,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-16 18:32:32,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-16 18:32:32,233 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:32,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:32,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1896334401, now seen corresponding path program 1 times [2025-03-16 18:32:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:32,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988229856] [2025-03-16 18:32:32,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:32,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:32,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 546 statements into 1 equivalence classes. [2025-03-16 18:32:32,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 546 of 546 statements. [2025-03-16 18:32:32,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:32,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 29 proven. 136 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2025-03-16 18:32:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988229856] [2025-03-16 18:32:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988229856] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577762307] [2025-03-16 18:32:32,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:32,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:32,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:32,562 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:32,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-16 18:32:32,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 546 statements into 1 equivalence classes. [2025-03-16 18:32:33,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 546 of 546 statements. [2025-03-16 18:32:33,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:33,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:33,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 4092 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:32:33,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2025-03-16 18:32:33,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577762307] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:33,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-16 18:32:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073803917] [2025-03-16 18:32:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:33,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:32:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:33,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:32:33,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:33,044 INFO L87 Difference]: Start difference. First operand 52218 states and 88309 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2025-03-16 18:32:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:38,356 INFO L93 Difference]: Finished difference Result 139710 states and 244047 transitions. [2025-03-16 18:32:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:32:38,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 546 [2025-03-16 18:32:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:39,120 INFO L225 Difference]: With dead ends: 139710 [2025-03-16 18:32:39,120 INFO L226 Difference]: Without dead ends: 95964 [2025-03-16 18:32:39,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:39,527 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 807 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:39,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 2400 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95964 states. [2025-03-16 18:32:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95964 to 95962. [2025-03-16 18:32:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95962 states, 72323 states have (on average 1.6062110255382105) internal successors, (116166), 76502 states have internal predecessors, (116166), 17898 states have call successors, (17898), 4060 states have call predecessors, (17898), 5740 states have return successors, (33249), 18071 states have call predecessors, (33249), 17862 states have call successors, (33249) [2025-03-16 18:32:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95962 states to 95962 states and 167313 transitions. [2025-03-16 18:32:45,663 INFO L78 Accepts]: Start accepts. Automaton has 95962 states and 167313 transitions. Word has length 546 [2025-03-16 18:32:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:45,663 INFO L471 AbstractCegarLoop]: Abstraction has 95962 states and 167313 transitions. [2025-03-16 18:32:45,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2025-03-16 18:32:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 95962 states and 167313 transitions. [2025-03-16 18:32:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2025-03-16 18:32:45,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:45,685 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 15, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:45,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-16 18:32:45,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-16 18:32:45,886 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:45,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash -771905465, now seen corresponding path program 1 times [2025-03-16 18:32:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:45,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298520091] [2025-03-16 18:32:45,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:45,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:45,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 547 statements into 1 equivalence classes. [2025-03-16 18:32:45,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 547 of 547 statements. [2025-03-16 18:32:45,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:45,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 29 proven. 136 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2025-03-16 18:32:46,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298520091] [2025-03-16 18:32:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298520091] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011073012] [2025-03-16 18:32:46,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:46,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:46,236 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:46,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-16 18:32:46,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 547 statements into 1 equivalence classes. [2025-03-16 18:32:46,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 547 of 547 statements. [2025-03-16 18:32:46,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:46,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:46,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 4093 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-16 18:32:46,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 710 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2025-03-16 18:32:47,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:47,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011073012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:47,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:47,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2025-03-16 18:32:47,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416132425] [2025-03-16 18:32:47,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:47,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:32:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:47,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:32:47,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:32:47,015 INFO L87 Difference]: Start difference. First operand 95962 states and 167313 transitions. Second operand has 9 states, 9 states have (on average 25.333333333333332) internal successors, (228), 8 states have internal predecessors, (228), 6 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41)