./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_product32.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 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:31:42,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:31:42,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:31:42,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:31:42,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:31:42,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:31:42,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:31:42,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:31:42,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:31:42,673 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:31:42,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:31:42,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:31:42,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:31:42,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:31:42,673 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:31:42,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:31:42,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:31:42,674 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:31:42,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:31:42,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:31:42,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:31:42,675 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 -> 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b [2025-03-16 18:31:42,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:31:42,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:31:42,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:31:42,925 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:31:42,925 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:31:42,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2025-03-16 18:31:44,109 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9914977/6d32c64b02854df69e115746473b6b52/FLAGe8a6ebd20 [2025-03-16 18:31:44,481 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:31:44,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2025-03-16 18:31:44,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9914977/6d32c64b02854df69e115746473b6b52/FLAGe8a6ebd20 [2025-03-16 18:31:44,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9914977/6d32c64b02854df69e115746473b6b52 [2025-03-16 18:31:44,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:31:44,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:31:44,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:31:44,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:31:44,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:31:44,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:31:44" (1/1) ... [2025-03-16 18:31:44,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6178d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:44, skipping insertion in model container [2025-03-16 18:31:44,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:31:44" (1/1) ... [2025-03-16 18:31:44,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:31:45,207 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_product32.cil.c[71521,71534] [2025-03-16 18:31:45,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:31:45,219 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:31:45,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2025-03-16 18:31:45,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2025-03-16 18:31:45,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [187] [2025-03-16 18:31:45,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [545] [2025-03-16 18:31:45,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [911] [2025-03-16 18:31:45,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [946] [2025-03-16 18:31:45,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1042] [2025-03-16 18:31:45,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1709] [2025-03-16 18:31:45,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3370] [2025-03-16 18:31:45,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [3379] [2025-03-16 18:31:45,310 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_product32.cil.c[71521,71534] [2025-03-16 18:31:45,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:31:45,335 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:31:45,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45 WrapperNode [2025-03-16 18:31:45,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:31:45,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:31:45,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:31:45,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:31:45,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,386 INFO L138 Inliner]: procedures = 96, calls = 348, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 903 [2025-03-16 18:31:45,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:31:45,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:31:45,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:31:45,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:31:45,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,427 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:31:45,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,442 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:31:45,456 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:31:45,458 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:31:45,458 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:31:45,459 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (1/1) ... [2025-03-16 18:31:45,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:31:45,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:45,481 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 18:31:45,482 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 18:31:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:31:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-16 18:31:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-16 18:31:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:31:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:31:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:31:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:31:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:31:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:31:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-16 18:31:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-16 18:31:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:31:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:31:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-16 18:31:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-16 18:31:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:31:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:31:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:31:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:31:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:31:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:31:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:31:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:31:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:31:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:31:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:31:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:31:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:31:45,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:31:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:31:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-16 18:31:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:31:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:31:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:31:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:31:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:31:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:31:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:31:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:31:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:31:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:31:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:31:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:31:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:31:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-16 18:31:45,501 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-16 18:31:45,633 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:31:45,635 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:31:45,694 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2654-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~25#1; [2025-03-16 18:31:45,694 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2682: #res#1 := ~retValue_acc~26#1; [2025-03-16 18:31:45,711 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L88: #res := ~retValue_acc~0; [2025-03-16 18:31:45,733 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3358: #res := ~retValue_acc~30; [2025-03-16 18:31:45,805 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2598-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~24#1; [2025-03-16 18:31:45,805 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2535-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~22#1; [2025-03-16 18:31:45,805 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2564: #res#1 := ~retValue_acc~23#1; [2025-03-16 18:31:45,818 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2727: #res := ~retValue_acc~28; [2025-03-16 18:31:45,986 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2495: #res := ~retValue_acc~21; [2025-03-16 18:31:46,013 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3367-1: isExecutiveFloor_#res#1 := isExecutiveFloor_~retValue_acc~31#1; [2025-03-16 18:31:46,063 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2130-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-16 18:31:46,063 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2143-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-16 18:31:46,065 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1967: #res := ~retValue_acc~15; [2025-03-16 18:31:46,067 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1706: #res := ~retValue_acc~12; [2025-03-16 18:31:46,078 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~2; [2025-03-16 18:31:46,080 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1785: #res := ~retValue_acc~13; [2025-03-16 18:31:46,081 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1958: #res := ~retValue_acc~14; [2025-03-16 18:31:46,193 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L127: #res := ~retValue_acc~1; [2025-03-16 18:31:46,211 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2001: #res := ~retValue_acc~16; [2025-03-16 18:31:46,249 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2050-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-03-16 18:31:46,305 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1395: #res := ~retValue_acc~11; [2025-03-16 18:31:46,365 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L542-1: main_#res#1 := main_~retValue_acc~4#1; [2025-03-16 18:31:46,365 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L943-1: valid_product_#res#1 := valid_product_~retValue_acc~9#1; [2025-03-16 18:31:46,375 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1159: #res := ~retValue_acc~10; [2025-03-16 18:31:46,469 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2713-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~27#1; [2025-03-16 18:31:46,596 INFO L? ?]: Removed 474 outVars from TransFormulas that were not future-live. [2025-03-16 18:31:46,596 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:31:46,621 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:31:46,621 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:31:46,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:31:46 BoogieIcfgContainer [2025-03-16 18:31:46,621 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:31:46,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:31:46,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:31:46,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:31:46,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:31:44" (1/3) ... [2025-03-16 18:31:46,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268110ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:31:46, skipping insertion in model container [2025-03-16 18:31:46,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:45" (2/3) ... [2025-03-16 18:31:46,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268110ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:31:46, skipping insertion in model container [2025-03-16 18:31:46,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:31:46" (3/3) ... [2025-03-16 18:31:46,628 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product32.cil.c [2025-03-16 18:31:46,638 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:31:46,641 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product32.cil.c that has 28 procedures, 572 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:31:46,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:31:46,714 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;@5e1b6d15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:31:46,714 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:31:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 440 states have (on average 1.6727272727272726) internal successors, (736), 458 states have internal predecessors, (736), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2025-03-16 18:31:46,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-16 18:31:46,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:46,730 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 18:31:46,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:46,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1257444145, now seen corresponding path program 1 times [2025-03-16 18:31:46,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:46,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953692966] [2025-03-16 18:31:46,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:46,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-16 18:31:46,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-16 18:31:46,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:46,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:47,109 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 18:31:47,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:47,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953692966] [2025-03-16 18:31:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953692966] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200665032] [2025-03-16 18:31:47,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:47,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:47,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:47,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:47,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:47,134 INFO L87 Difference]: Start difference. First operand has 572 states, 440 states have (on average 1.6727272727272726) internal successors, (736), 458 states have internal predecessors, (736), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 4 states, 4 states have (on average 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 18:31:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:47,293 INFO L93 Difference]: Finished difference Result 1142 states and 1889 transitions. [2025-03-16 18:31:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:47,295 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 18:31:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:47,310 INFO L225 Difference]: With dead ends: 1142 [2025-03-16 18:31:47,310 INFO L226 Difference]: Without dead ends: 569 [2025-03-16 18:31:47,318 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 18:31:47,320 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 6 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2775 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 18:31:47,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2775 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:47,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-16 18:31:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-03-16 18:31:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 438 states have (on average 1.6621004566210045) internal successors, (728), 455 states have internal predecessors, (728), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 933 transitions. [2025-03-16 18:31:47,400 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 933 transitions. Word has length 59 [2025-03-16 18:31:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:47,400 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 933 transitions. [2025-03-16 18:31:47,400 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 18:31:47,402 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 933 transitions. [2025-03-16 18:31:47,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 18:31:47,404 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:47,404 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 18:31:47,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:31:47,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:47,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1755104788, now seen corresponding path program 1 times [2025-03-16 18:31:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389982539] [2025-03-16 18:31:47,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:47,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 18:31:47,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 18:31:47,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:47,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:47,559 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 18:31:47,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:47,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389982539] [2025-03-16 18:31:47,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389982539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:47,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:47,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:47,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628737202] [2025-03-16 18:31:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:47,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:47,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:47,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:47,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:47,561 INFO L87 Difference]: Start difference. First operand 569 states and 933 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 18:31:47,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:47,642 INFO L93 Difference]: Finished difference Result 1125 states and 1847 transitions. [2025-03-16 18:31:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:47,644 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 18:31:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:47,651 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:31:47,651 INFO L226 Difference]: Without dead ends: 569 [2025-03-16 18:31:47,655 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 18:31:47,656 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 4 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2750 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 18:31:47,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2750 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-16 18:31:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-03-16 18:31:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 438 states have (on average 1.6598173515981736) internal successors, (727), 455 states have internal predecessors, (727), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 932 transitions. [2025-03-16 18:31:47,682 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 932 transitions. Word has length 60 [2025-03-16 18:31:47,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:47,682 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 932 transitions. [2025-03-16 18:31:47,682 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 18:31:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 932 transitions. [2025-03-16 18:31:47,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:31:47,684 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:47,684 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 18:31:47,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:31:47,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:47,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash 980110540, now seen corresponding path program 1 times [2025-03-16 18:31:47,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:47,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19053777] [2025-03-16 18:31:47,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:47,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:31:47,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:31:47,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:47,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:47,808 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 18:31:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19053777] [2025-03-16 18:31:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19053777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:47,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154897945] [2025-03-16 18:31:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:47,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:47,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:47,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:47,810 INFO L87 Difference]: Start difference. First operand 569 states and 932 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 18:31:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:47,893 INFO L93 Difference]: Finished difference Result 1125 states and 1846 transitions. [2025-03-16 18:31:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:47,893 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 18:31:47,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:47,900 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:31:47,901 INFO L226 Difference]: Without dead ends: 569 [2025-03-16 18:31:47,903 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 18:31:47,903 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 3 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2750 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 18:31:47,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2750 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-16 18:31:47,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-03-16 18:31:47,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 438 states have (on average 1.6575342465753424) internal successors, (726), 455 states have internal predecessors, (726), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 931 transitions. [2025-03-16 18:31:47,931 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 931 transitions. Word has length 61 [2025-03-16 18:31:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:47,931 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 931 transitions. [2025-03-16 18:31:47,931 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 18:31:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 931 transitions. [2025-03-16 18:31:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 18:31:47,934 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:47,934 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 18:31:47,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:31:47,934 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:47,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1244605327, now seen corresponding path program 1 times [2025-03-16 18:31:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247770137] [2025-03-16 18:31:47,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:47,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 18:31:47,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 18:31:47,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:47,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:48,060 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 18:31:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247770137] [2025-03-16 18:31:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247770137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:48,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:48,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296984710] [2025-03-16 18:31:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:48,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:48,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:48,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:48,061 INFO L87 Difference]: Start difference. First operand 569 states and 931 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 18:31:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:48,122 INFO L93 Difference]: Finished difference Result 1125 states and 1845 transitions. [2025-03-16 18:31:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:48,123 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 18:31:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:48,128 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:31:48,128 INFO L226 Difference]: Without dead ends: 569 [2025-03-16 18:31:48,130 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 18:31:48,132 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 2 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2750 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 18:31:48,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2750 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-16 18:31:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-03-16 18:31:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 438 states have (on average 1.6552511415525115) internal successors, (725), 455 states have internal predecessors, (725), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 930 transitions. [2025-03-16 18:31:48,167 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 930 transitions. Word has length 62 [2025-03-16 18:31:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:48,168 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 930 transitions. [2025-03-16 18:31:48,168 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 18:31:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 930 transitions. [2025-03-16 18:31:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:31:48,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:48,170 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 18:31:48,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:31:48,170 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:48,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1166051127, now seen corresponding path program 1 times [2025-03-16 18:31:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12088390] [2025-03-16 18:31:48,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:48,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:31:48,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:31:48,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:48,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:48,297 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 18:31:48,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:48,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12088390] [2025-03-16 18:31:48,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12088390] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:48,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:48,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:48,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500659206] [2025-03-16 18:31:48,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:48,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:48,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:48,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:48,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:48,299 INFO L87 Difference]: Start difference. First operand 569 states and 930 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 18:31:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:48,344 INFO L93 Difference]: Finished difference Result 1125 states and 1844 transitions. [2025-03-16 18:31:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:48,344 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 18:31:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:48,349 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:31:48,349 INFO L226 Difference]: Without dead ends: 569 [2025-03-16 18:31:48,352 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 18:31:48,353 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 1 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2750 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 18:31:48,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2750 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-16 18:31:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-03-16 18:31:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 438 states have (on average 1.6529680365296804) internal successors, (724), 455 states have internal predecessors, (724), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 929 transitions. [2025-03-16 18:31:48,387 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 929 transitions. Word has length 63 [2025-03-16 18:31:48,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:48,388 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 929 transitions. [2025-03-16 18:31:48,388 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 18:31:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 929 transitions. [2025-03-16 18:31:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:31:48,390 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:48,390 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 18:31:48,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:31:48,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:48,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:48,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1594398414, now seen corresponding path program 1 times [2025-03-16 18:31:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:48,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954400804] [2025-03-16 18:31:48,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:48,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:31:48,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:31:48,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:48,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:48,617 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 18:31:48,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:48,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954400804] [2025-03-16 18:31:48,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954400804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:48,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:48,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 18:31:48,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168719736] [2025-03-16 18:31:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:48,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:31:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:48,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:31:48,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:48,619 INFO L87 Difference]: Start difference. First operand 569 states and 929 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 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 18:31:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:48,755 INFO L93 Difference]: Finished difference Result 1136 states and 1861 transitions. [2025-03-16 18:31:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:31:48,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 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 18:31:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:48,762 INFO L225 Difference]: With dead ends: 1136 [2025-03-16 18:31:48,762 INFO L226 Difference]: Without dead ends: 584 [2025-03-16 18:31:48,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:31:48,768 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 91 mSDsluCounter, 6311 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7225 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:48,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7225 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-03-16 18:31:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2025-03-16 18:31:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 448 states have (on average 1.6495535714285714) internal successors, (739), 467 states have internal predecessors, (739), 104 states have call successors, (104), 28 states have call predecessors, (104), 29 states have return successors, (106), 100 states have call predecessors, (106), 103 states have call successors, (106) [2025-03-16 18:31:48,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 949 transitions. [2025-03-16 18:31:48,807 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 949 transitions. Word has length 64 [2025-03-16 18:31:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:48,808 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 949 transitions. [2025-03-16 18:31:48,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 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 18:31:48,808 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 949 transitions. [2025-03-16 18:31:48,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:31:48,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:48,810 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 18:31:48,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:31:48,810 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:48,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1931398867, now seen corresponding path program 1 times [2025-03-16 18:31:48,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:48,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697343520] [2025-03-16 18:31:48,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:48,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:31:48,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:31:48,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:48,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:48,872 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 18:31:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:48,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697343520] [2025-03-16 18:31:48,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697343520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:48,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:48,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:31:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18796308] [2025-03-16 18:31:48,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:48,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:48,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:48,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:48,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:48,874 INFO L87 Difference]: Start difference. First operand 582 states and 949 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 18:31:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:48,916 INFO L93 Difference]: Finished difference Result 1143 states and 1872 transitions. [2025-03-16 18:31:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:48,917 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 18:31:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:48,920 INFO L225 Difference]: With dead ends: 1143 [2025-03-16 18:31:48,920 INFO L226 Difference]: Without dead ends: 578 [2025-03-16 18:31:48,922 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 18:31:48,923 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 1 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2745 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 18:31:48,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2745 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-03-16 18:31:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2025-03-16 18:31:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 446 states have (on average 1.6502242152466369) internal successors, (736), 464 states have internal predecessors, (736), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 99 states have call predecessors, (103), 102 states have call successors, (103) [2025-03-16 18:31:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 942 transitions. [2025-03-16 18:31:48,938 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 942 transitions. Word has length 64 [2025-03-16 18:31:48,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:48,938 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 942 transitions. [2025-03-16 18:31:48,938 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 18:31:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 942 transitions. [2025-03-16 18:31:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 18:31:48,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:48,939 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 18:31:48,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:31:48,939 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:48,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1014561952, now seen corresponding path program 1 times [2025-03-16 18:31:48,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:48,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231250695] [2025-03-16 18:31:48,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:48,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:48,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 18:31:48,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 18:31:48,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:48,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:49,024 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 18:31:49,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:49,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231250695] [2025-03-16 18:31:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231250695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655914424] [2025-03-16 18:31:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:49,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:49,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:49,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:49,026 INFO L87 Difference]: Start difference. First operand 578 states and 942 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 18:31:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:49,222 INFO L93 Difference]: Finished difference Result 1186 states and 1944 transitions. [2025-03-16 18:31:49,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:31:49,223 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 18:31:49,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:49,227 INFO L225 Difference]: With dead ends: 1186 [2025-03-16 18:31:49,227 INFO L226 Difference]: Without dead ends: 610 [2025-03-16 18:31:49,229 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 18:31:49,230 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 72 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4376 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 18:31:49,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4376 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:31:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2025-03-16 18:31:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 583. [2025-03-16 18:31:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 451 states have (on average 1.6363636363636365) internal successors, (738), 468 states have internal predecessors, (738), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 943 transitions. [2025-03-16 18:31:49,247 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 943 transitions. Word has length 65 [2025-03-16 18:31:49,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:49,247 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 943 transitions. [2025-03-16 18:31:49,247 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 18:31:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 943 transitions. [2025-03-16 18:31:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:31:49,248 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:49,248 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 18:31:49,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:31:49,248 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:49,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash 994924581, now seen corresponding path program 1 times [2025-03-16 18:31:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:49,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379696539] [2025-03-16 18:31:49,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:49,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:49,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:31:49,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:31:49,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:49,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:49,333 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 18:31:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379696539] [2025-03-16 18:31:49,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379696539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:49,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:49,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78013911] [2025-03-16 18:31:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:49,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:49,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:49,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:49,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:49,335 INFO L87 Difference]: Start difference. First operand 583 states and 943 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 18:31:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:49,483 INFO L93 Difference]: Finished difference Result 1137 states and 1839 transitions. [2025-03-16 18:31:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:49,483 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 18:31:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:49,490 INFO L225 Difference]: With dead ends: 1137 [2025-03-16 18:31:49,490 INFO L226 Difference]: Without dead ends: 601 [2025-03-16 18:31:49,491 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 18:31:49,492 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 56 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4353 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 18:31:49,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4353 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2025-03-16 18:31:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 583. [2025-03-16 18:31:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 451 states have (on average 1.6274944567627494) internal successors, (734), 468 states have internal predecessors, (734), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 939 transitions. [2025-03-16 18:31:49,529 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 939 transitions. Word has length 66 [2025-03-16 18:31:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:49,529 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 939 transitions. [2025-03-16 18:31:49,529 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 18:31:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 939 transitions. [2025-03-16 18:31:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:31:49,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:49,530 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 18:31:49,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:31:49,531 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:49,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash -469548221, now seen corresponding path program 1 times [2025-03-16 18:31:49,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:49,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985645689] [2025-03-16 18:31:49,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:49,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:31:49,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:31:49,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:49,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:49,635 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 18:31:49,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:49,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985645689] [2025-03-16 18:31:49,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985645689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:49,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:49,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646948603] [2025-03-16 18:31:49,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:49,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:49,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:49,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:49,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:49,637 INFO L87 Difference]: Start difference. First operand 583 states and 939 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 18:31:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:49,805 INFO L93 Difference]: Finished difference Result 1137 states and 1835 transitions. [2025-03-16 18:31:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:49,806 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 18:31:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:49,812 INFO L225 Difference]: With dead ends: 1137 [2025-03-16 18:31:49,812 INFO L226 Difference]: Without dead ends: 601 [2025-03-16 18:31:49,814 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 18:31:49,815 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 55 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4348 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 18:31:49,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4348 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2025-03-16 18:31:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 583. [2025-03-16 18:31:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 451 states have (on average 1.6186252771618626) internal successors, (730), 468 states have internal predecessors, (730), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 935 transitions. [2025-03-16 18:31:49,836 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 935 transitions. Word has length 67 [2025-03-16 18:31:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:49,836 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 935 transitions. [2025-03-16 18:31:49,836 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 18:31:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 935 transitions. [2025-03-16 18:31:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:31:49,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:49,838 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 18:31:49,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:31:49,839 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:49,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:49,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2072088562, now seen corresponding path program 1 times [2025-03-16 18:31:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:49,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244158892] [2025-03-16 18:31:49,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:49,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:31:49,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:31:49,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:49,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:49,954 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 18:31:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244158892] [2025-03-16 18:31:49,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244158892] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:49,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:49,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:31:49,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231830239] [2025-03-16 18:31:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:49,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:31:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:49,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:31:49,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:49,956 INFO L87 Difference]: Start difference. First operand 583 states and 935 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 18:31:50,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:50,027 INFO L93 Difference]: Finished difference Result 1128 states and 1817 transitions. [2025-03-16 18:31:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:31:50,028 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 18:31:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:50,032 INFO L225 Difference]: With dead ends: 1128 [2025-03-16 18:31:50,032 INFO L226 Difference]: Without dead ends: 571 [2025-03-16 18:31:50,034 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 18:31:50,035 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 94 mSDsluCounter, 4429 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5334 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 18:31:50,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5334 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2025-03-16 18:31:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 562. [2025-03-16 18:31:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.6116279069767443) internal successors, (693), 447 states have internal predecessors, (693), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 898 transitions. [2025-03-16 18:31:50,050 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 898 transitions. Word has length 67 [2025-03-16 18:31:50,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:50,051 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 898 transitions. [2025-03-16 18:31:50,051 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 18:31:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 898 transitions. [2025-03-16 18:31:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 18:31:50,052 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:50,052 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 18:31:50,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 18:31:50,052 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:50,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2042389288, now seen corresponding path program 1 times [2025-03-16 18:31:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:50,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476711458] [2025-03-16 18:31:50,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:50,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:50,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:31:50,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:31:50,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:50,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:50,141 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 18:31:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:50,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476711458] [2025-03-16 18:31:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476711458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:50,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:50,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313394897] [2025-03-16 18:31:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:50,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:50,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:50,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:50,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:50,142 INFO L87 Difference]: Start difference. First operand 562 states and 898 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 18:31:50,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:50,238 INFO L93 Difference]: Finished difference Result 1107 states and 1780 transitions. [2025-03-16 18:31:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:50,239 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 18:31:50,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:50,242 INFO L225 Difference]: With dead ends: 1107 [2025-03-16 18:31:50,243 INFO L226 Difference]: Without dead ends: 571 [2025-03-16 18:31:50,245 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 18:31:50,245 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 39 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4353 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 18:31:50,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4353 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:50,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2025-03-16 18:31:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 562. [2025-03-16 18:31:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.6093023255813954) internal successors, (692), 447 states have internal predecessors, (692), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 897 transitions. [2025-03-16 18:31:50,260 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 897 transitions. Word has length 68 [2025-03-16 18:31:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:50,260 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 897 transitions. [2025-03-16 18:31:50,260 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 18:31:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 897 transitions. [2025-03-16 18:31:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 18:31:50,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:50,261 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 18:31:50,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 18:31:50,261 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:50,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1025972442, now seen corresponding path program 1 times [2025-03-16 18:31:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:50,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107486274] [2025-03-16 18:31:50,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:50,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:50,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 18:31:50,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 18:31:50,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:50,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:50,339 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 18:31:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:50,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107486274] [2025-03-16 18:31:50,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107486274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:50,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:50,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:31:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313992313] [2025-03-16 18:31:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:50,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:50,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:50,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:50,340 INFO L87 Difference]: Start difference. First operand 562 states and 897 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 18:31:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:50,417 INFO L93 Difference]: Finished difference Result 1107 states and 1779 transitions. [2025-03-16 18:31:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:50,418 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 18:31:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:50,422 INFO L225 Difference]: With dead ends: 1107 [2025-03-16 18:31:50,422 INFO L226 Difference]: Without dead ends: 571 [2025-03-16 18:31:50,424 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 18:31:50,425 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 38 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4353 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:50,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4353 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2025-03-16 18:31:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 562. [2025-03-16 18:31:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.6069767441860465) internal successors, (691), 447 states have internal predecessors, (691), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 896 transitions. [2025-03-16 18:31:50,441 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 896 transitions. Word has length 69 [2025-03-16 18:31:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:50,441 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 896 transitions. [2025-03-16 18:31:50,441 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 18:31:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 896 transitions. [2025-03-16 18:31:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-16 18:31:50,441 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:50,442 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 18:31:50,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:31:50,442 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:50,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:50,443 INFO L85 PathProgramCache]: Analyzing trace with hash -989951445, now seen corresponding path program 1 times [2025-03-16 18:31:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690713809] [2025-03-16 18:31:50,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:50,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-16 18:31:50,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 18:31:50,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:50,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:50,597 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 18:31:50,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:50,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690713809] [2025-03-16 18:31:50,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690713809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:50,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:50,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 18:31:50,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328950834] [2025-03-16 18:31:50,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:50,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 18:31:50,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:50,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 18:31:50,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:31:50,598 INFO L87 Difference]: Start difference. First operand 562 states and 896 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 18:31:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:50,738 INFO L93 Difference]: Finished difference Result 1097 states and 1761 transitions. [2025-03-16 18:31:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:31:50,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 70 [2025-03-16 18:31:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:50,743 INFO L225 Difference]: With dead ends: 1097 [2025-03-16 18:31:50,743 INFO L226 Difference]: Without dead ends: 567 [2025-03-16 18:31:50,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:31:50,746 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 21 mSDsluCounter, 6785 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7637 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:50,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7637 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:50,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-03-16 18:31:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 564. [2025-03-16 18:31:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 432 states have (on average 1.6018518518518519) internal successors, (692), 449 states have internal predecessors, (692), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:31:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 897 transitions. [2025-03-16 18:31:50,763 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 897 transitions. Word has length 70 [2025-03-16 18:31:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:50,763 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 897 transitions. [2025-03-16 18:31:50,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 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 18:31:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 897 transitions. [2025-03-16 18:31:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 18:31:50,764 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:50,764 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 18:31:50,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 18:31:50,764 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:50,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 506328889, now seen corresponding path program 1 times [2025-03-16 18:31:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:50,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103422261] [2025-03-16 18:31:50,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:50,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:50,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:31:50,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:31:50,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:50,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:50,908 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 18:31:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103422261] [2025-03-16 18:31:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103422261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:50,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:31:50,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 18:31:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878902308] [2025-03-16 18:31:50,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:50,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:31:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:50,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:31:50,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 18:31:50,910 INFO L87 Difference]: Start difference. First operand 564 states and 897 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 18:31:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:51,046 INFO L93 Difference]: Finished difference Result 1602 states and 2594 transitions. [2025-03-16 18:31:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:31:51,046 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 18:31:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:51,053 INFO L225 Difference]: With dead ends: 1602 [2025-03-16 18:31:51,053 INFO L226 Difference]: Without dead ends: 1077 [2025-03-16 18:31:51,057 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 18:31:51,058 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 835 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:51,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1793 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2025-03-16 18:31:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1014. [2025-03-16 18:31:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 782 states have (on average 1.6176470588235294) internal successors, (1265), 808 states have internal predecessors, (1265), 182 states have call successors, (182), 51 states have call predecessors, (182), 49 states have return successors, (187), 169 states have call predecessors, (187), 180 states have call successors, (187) [2025-03-16 18:31:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1634 transitions. [2025-03-16 18:31:51,116 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1634 transitions. Word has length 71 [2025-03-16 18:31:51,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:51,116 INFO L471 AbstractCegarLoop]: Abstraction has 1014 states and 1634 transitions. [2025-03-16 18:31:51,116 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 18:31:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1634 transitions. [2025-03-16 18:31:51,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-16 18:31:51,122 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:51,122 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:51,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:31:51,122 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:51,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:51,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1266670858, now seen corresponding path program 1 times [2025-03-16 18:31:51,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:51,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164854721] [2025-03-16 18:31:51,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:51,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:51,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:31:51,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:31:51,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:51,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 18:31:51,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:51,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164854721] [2025-03-16 18:31:51,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164854721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:51,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566575242] [2025-03-16 18:31:51,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:51,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:51,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:51,251 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 18:31:51,252 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 18:31:51,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:31:51,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:31:51,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:51,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:51,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:51,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:31:51,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566575242] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:51,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:51,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 18:31:51,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835545465] [2025-03-16 18:31:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:51,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:31:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:51,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:31:51,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:51,561 INFO L87 Difference]: Start difference. First operand 1014 states and 1634 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:51,650 INFO L93 Difference]: Finished difference Result 2952 states and 4858 transitions. [2025-03-16 18:31:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:31:51,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2025-03-16 18:31:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:51,662 INFO L225 Difference]: With dead ends: 2952 [2025-03-16 18:31:51,662 INFO L226 Difference]: Without dead ends: 1978 [2025-03-16 18:31:51,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:51,668 INFO L435 NwaCegarLoop]: 1684 mSDtfsCounter, 840 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:51,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2556 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2025-03-16 18:31:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1966. [2025-03-16 18:31:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1519 states have (on average 1.6267281105990783) internal successors, (2471), 1568 states have internal predecessors, (2471), 351 states have call successors, (351), 97 states have call predecessors, (351), 95 states have return successors, (390), 330 states have call predecessors, (390), 347 states have call successors, (390) [2025-03-16 18:31:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3212 transitions. [2025-03-16 18:31:51,758 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3212 transitions. Word has length 126 [2025-03-16 18:31:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:51,759 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 3212 transitions. [2025-03-16 18:31:51,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3212 transitions. [2025-03-16 18:31:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-16 18:31:51,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:51,763 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:51,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 18:31:51,963 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 18:31:51,964 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:51,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1547081900, now seen corresponding path program 1 times [2025-03-16 18:31:51,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:51,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059265276] [2025-03-16 18:31:51,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:51,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:51,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:31:51,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:31:51,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:51,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 18:31:52,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059265276] [2025-03-16 18:31:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059265276] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547738538] [2025-03-16 18:31:52,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:52,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:52,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:52,131 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 18:31:52,133 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 18:31:52,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:31:52,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:31:52,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:52,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:52,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:31:52,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-16 18:31:52,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547738538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:52,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2025-03-16 18:31:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543447152] [2025-03-16 18:31:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:52,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:31:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:52,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:31:52,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:31:52,548 INFO L87 Difference]: Start difference. First operand 1966 states and 3212 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:53,144 INFO L93 Difference]: Finished difference Result 5037 states and 8252 transitions. [2025-03-16 18:31:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:53,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2025-03-16 18:31:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:53,161 INFO L225 Difference]: With dead ends: 5037 [2025-03-16 18:31:53,161 INFO L226 Difference]: Without dead ends: 3110 [2025-03-16 18:31:53,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:31:53,172 INFO L435 NwaCegarLoop]: 1188 mSDtfsCounter, 836 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 4989 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:53,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 4989 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2025-03-16 18:31:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3108. [2025-03-16 18:31:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 2395 states have (on average 1.5920668058455114) internal successors, (3813), 2448 states have internal predecessors, (3813), 549 states have call successors, (549), 167 states have call predecessors, (549), 163 states have return successors, (680), 524 states have call predecessors, (680), 541 states have call successors, (680) [2025-03-16 18:31:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 5042 transitions. [2025-03-16 18:31:53,296 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 5042 transitions. Word has length 125 [2025-03-16 18:31:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:53,297 INFO L471 AbstractCegarLoop]: Abstraction has 3108 states and 5042 transitions. [2025-03-16 18:31:53,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:31:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 5042 transitions. [2025-03-16 18:31:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-16 18:31:53,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:53,301 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:53,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 18:31:53,505 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 18:31:53,505 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:53,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash -743707544, now seen corresponding path program 1 times [2025-03-16 18:31:53,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:53,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321739741] [2025-03-16 18:31:53,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:53,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:53,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:31:53,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:31:53,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:53,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 18:31:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321739741] [2025-03-16 18:31:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321739741] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232647031] [2025-03-16 18:31:53,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:53,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:53,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:53,619 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 18:31:53,621 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 18:31:53,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:31:53,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:31:53,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:53,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:53,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:53,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 18:31:54,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:54,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232647031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:54,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:54,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:54,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175778740] [2025-03-16 18:31:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:54,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:54,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:54,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:54,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:54,010 INFO L87 Difference]: Start difference. First operand 3108 states and 5042 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:54,593 INFO L93 Difference]: Finished difference Result 6241 states and 10475 transitions. [2025-03-16 18:31:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:54,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2025-03-16 18:31:54,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:54,611 INFO L225 Difference]: With dead ends: 6241 [2025-03-16 18:31:54,611 INFO L226 Difference]: Without dead ends: 3172 [2025-03-16 18:31:54,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 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 18:31:54,632 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 837 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:54,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2170 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2025-03-16 18:31:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3172. [2025-03-16 18:31:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 2451 states have (on average 1.594859241126071) internal successors, (3909), 2504 states have internal predecessors, (3909), 549 states have call successors, (549), 175 states have call predecessors, (549), 171 states have return successors, (688), 524 states have call predecessors, (688), 541 states have call successors, (688) [2025-03-16 18:31:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 5146 transitions. [2025-03-16 18:31:54,753 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 5146 transitions. Word has length 126 [2025-03-16 18:31:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:54,754 INFO L471 AbstractCegarLoop]: Abstraction has 3172 states and 5146 transitions. [2025-03-16 18:31:54,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 5146 transitions. [2025-03-16 18:31:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-16 18:31:54,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:54,763 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:54,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 18:31:54,968 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 18:31:54,968 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:54,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash 427788779, now seen corresponding path program 1 times [2025-03-16 18:31:54,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:54,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836554725] [2025-03-16 18:31:54,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:54,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:54,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-16 18:31:54,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-16 18:31:54,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:54,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-16 18:31:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836554725] [2025-03-16 18:31:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836554725] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779890615] [2025-03-16 18:31:55,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:55,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:55,123 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 18:31:55,125 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 18:31:55,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-16 18:31:55,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-16 18:31:55,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:55,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:55,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:55,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:31:55,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:55,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779890615] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:55,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:55,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:55,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033859180] [2025-03-16 18:31:55,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:55,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:55,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:55,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:55,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:55,487 INFO L87 Difference]: Start difference. First operand 3172 states and 5146 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:56,058 INFO L93 Difference]: Finished difference Result 6369 states and 10659 transitions. [2025-03-16 18:31:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:56,059 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2025-03-16 18:31:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:56,080 INFO L225 Difference]: With dead ends: 6369 [2025-03-16 18:31:56,080 INFO L226 Difference]: Without dead ends: 3236 [2025-03-16 18:31:56,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 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 18:31:56,095 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 821 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:56,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2167 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2025-03-16 18:31:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3236. [2025-03-16 18:31:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 2507 states have (on average 1.597526924611089) internal successors, (4005), 2560 states have internal predecessors, (4005), 549 states have call successors, (549), 183 states have call predecessors, (549), 179 states have return successors, (696), 524 states have call predecessors, (696), 541 states have call successors, (696) [2025-03-16 18:31:56,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 5250 transitions. [2025-03-16 18:31:56,233 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 5250 transitions. Word has length 129 [2025-03-16 18:31:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:56,234 INFO L471 AbstractCegarLoop]: Abstraction has 3236 states and 5250 transitions. [2025-03-16 18:31:56,234 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 5250 transitions. [2025-03-16 18:31:56,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 18:31:56,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:56,237 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:56,245 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 18:31:56,438 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 18:31:56,438 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:56,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash 847713029, now seen corresponding path program 1 times [2025-03-16 18:31:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649804382] [2025-03-16 18:31:56,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:56,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:31:56,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:31:56,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:56,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-16 18:31:56,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649804382] [2025-03-16 18:31:56,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649804382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031107373] [2025-03-16 18:31:56,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:56,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:56,554 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 18:31:56,556 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 18:31:56,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:31:56,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:31:56,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:56,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:56,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:56,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-16 18:31:56,886 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031107373] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:56,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042925779] [2025-03-16 18:31:56,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:56,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:56,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:56,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:56,888 INFO L87 Difference]: Start difference. First operand 3236 states and 5250 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:57,375 INFO L93 Difference]: Finished difference Result 6497 states and 10843 transitions. [2025-03-16 18:31:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:57,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2025-03-16 18:31:57,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:57,399 INFO L225 Difference]: With dead ends: 6497 [2025-03-16 18:31:57,399 INFO L226 Difference]: Without dead ends: 3300 [2025-03-16 18:31:57,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 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 18:31:57,416 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 823 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:57,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2164 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2025-03-16 18:31:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3300. [2025-03-16 18:31:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2563 states have (on average 1.6000780335544285) internal successors, (4101), 2616 states have internal predecessors, (4101), 549 states have call successors, (549), 191 states have call predecessors, (549), 187 states have return successors, (704), 524 states have call predecessors, (704), 541 states have call successors, (704) [2025-03-16 18:31:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5354 transitions. [2025-03-16 18:31:57,551 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5354 transitions. Word has length 132 [2025-03-16 18:31:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:57,551 INFO L471 AbstractCegarLoop]: Abstraction has 3300 states and 5354 transitions. [2025-03-16 18:31:57,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5354 transitions. [2025-03-16 18:31:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 18:31:57,555 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:57,555 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:57,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:57,756 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 18:31:57,756 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:57,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2104241086, now seen corresponding path program 1 times [2025-03-16 18:31:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139209748] [2025-03-16 18:31:57,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:57,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:31:57,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:31:57,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:57,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:31:57,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:57,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139209748] [2025-03-16 18:31:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139209748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:57,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930577421] [2025-03-16 18:31:57,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:57,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:57,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:57,854 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 18:31:57,856 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 18:31:57,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:31:58,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:31:58,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:58,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:58,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:31:58,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 18:31:58,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930577421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:58,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:31:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072311777] [2025-03-16 18:31:58,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:58,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:58,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:58,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:58,173 INFO L87 Difference]: Start difference. First operand 3300 states and 5354 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:58,637 INFO L93 Difference]: Finished difference Result 6625 states and 11027 transitions. [2025-03-16 18:31:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:58,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2025-03-16 18:31:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:58,660 INFO L225 Difference]: With dead ends: 6625 [2025-03-16 18:31:58,660 INFO L226 Difference]: Without dead ends: 3364 [2025-03-16 18:31:58,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 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 18:31:58,706 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 804 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:58,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 2161 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2025-03-16 18:31:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 3364. [2025-03-16 18:31:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 2619 states have (on average 1.602520045819015) internal successors, (4197), 2672 states have internal predecessors, (4197), 549 states have call successors, (549), 199 states have call predecessors, (549), 195 states have return successors, (712), 524 states have call predecessors, (712), 541 states have call successors, (712) [2025-03-16 18:31:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 5458 transitions. [2025-03-16 18:31:58,802 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 5458 transitions. Word has length 135 [2025-03-16 18:31:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:58,802 INFO L471 AbstractCegarLoop]: Abstraction has 3364 states and 5458 transitions. [2025-03-16 18:31:58,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 5458 transitions. [2025-03-16 18:31:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-16 18:31:58,807 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:58,807 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 18:31:58,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:59,007 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 18:31:59,008 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:59,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1715746020, now seen corresponding path program 1 times [2025-03-16 18:31:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:59,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424408516] [2025-03-16 18:31:59,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:59,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:59,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:31:59,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:31:59,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:59,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 18:31:59,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424408516] [2025-03-16 18:31:59,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424408516] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106896320] [2025-03-16 18:31:59,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:59,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:59,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:59,094 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 18:31:59,095 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 18:31:59,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:31:59,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:31:59,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:59,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:59,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:31:59,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-16 18:31:59,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106896320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:59,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:59,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-16 18:31:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919246834] [2025-03-16 18:31:59,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:59,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:31:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:59,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:31:59,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:31:59,400 INFO L87 Difference]: Start difference. First operand 3364 states and 5458 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:31:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:59,912 INFO L93 Difference]: Finished difference Result 6705 states and 11243 transitions. [2025-03-16 18:31:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:31:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2025-03-16 18:31:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:59,936 INFO L225 Difference]: With dead ends: 6705 [2025-03-16 18:31:59,936 INFO L226 Difference]: Without dead ends: 3380 [2025-03-16 18:31:59,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 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 18:31:59,956 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 815 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:59,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2161 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:31:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2025-03-16 18:32:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3380. [2025-03-16 18:32:00,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 2627 states have (on average 1.5885039969547012) internal successors, (4173), 2688 states have internal predecessors, (4173), 549 states have call successors, (549), 199 states have call predecessors, (549), 203 states have return successors, (720), 524 states have call predecessors, (720), 541 states have call successors, (720) [2025-03-16 18:32:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5442 transitions. [2025-03-16 18:32:00,094 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5442 transitions. Word has length 138 [2025-03-16 18:32:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:00,094 INFO L471 AbstractCegarLoop]: Abstraction has 3380 states and 5442 transitions. [2025-03-16 18:32:00,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:32:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5442 transitions. [2025-03-16 18:32:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-16 18:32:00,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:00,098 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 18:32:00,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 18:32:00,303 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 18:32:00,303 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:00,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash -517669086, now seen corresponding path program 1 times [2025-03-16 18:32:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:00,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015226085] [2025-03-16 18:32:00,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:00,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:00,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:32:00,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:32:00,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:00,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,503 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 18:32:00,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015226085] [2025-03-16 18:32:00,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015226085] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019632068] [2025-03-16 18:32:00,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:00,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:00,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:00,506 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 18:32:00,507 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 18:32:00,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:32:00,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:32:00,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:00,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 18:32:00,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:32:00,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:00,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019632068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:00,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:00,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-16 18:32:00,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175780554] [2025-03-16 18:32:00,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:00,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:32:00,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:00,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:32:00,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:32:00,891 INFO L87 Difference]: Start difference. First operand 3380 states and 5442 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, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2025-03-16 18:32:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:02,306 INFO L93 Difference]: Finished difference Result 6901 states and 11141 transitions. [2025-03-16 18:32:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:32:02,307 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, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 138 [2025-03-16 18:32:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:02,327 INFO L225 Difference]: With dead ends: 6901 [2025-03-16 18:32:02,327 INFO L226 Difference]: Without dead ends: 3565 [2025-03-16 18:32:02,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 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 18:32:02,340 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 2118 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:02,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 848 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 18:32:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2025-03-16 18:32:02,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3311. [2025-03-16 18:32:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 2469 states have (on average 1.5500202511138113) internal successors, (3827), 2568 states have internal predecessors, (3827), 642 states have call successors, (642), 181 states have call predecessors, (642), 199 states have return successors, (790), 613 states have call predecessors, (790), 634 states have call successors, (790) [2025-03-16 18:32:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 5259 transitions. [2025-03-16 18:32:02,499 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 5259 transitions. Word has length 138 [2025-03-16 18:32:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:02,500 INFO L471 AbstractCegarLoop]: Abstraction has 3311 states and 5259 transitions. [2025-03-16 18:32:02,500 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, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2025-03-16 18:32:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 5259 transitions. [2025-03-16 18:32:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-16 18:32:02,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:02,503 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 18:32:02,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:02,704 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 18:32:02,704 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:02,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1152844483, now seen corresponding path program 1 times [2025-03-16 18:32:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:02,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910909790] [2025-03-16 18:32:02,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:02,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:02,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:32:02,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:32:02,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:02,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:02,913 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 18:32:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910909790] [2025-03-16 18:32:02,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910909790] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:02,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560801200] [2025-03-16 18:32:02,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:02,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:02,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:02,916 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 18:32:02,917 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 18:32:03,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 18:32:03,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 18:32:03,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:03,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:03,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-16 18:32:03,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:03,237 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 18:32:03,237 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:03,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560801200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:03,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:03,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-16 18:32:03,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045579353] [2025-03-16 18:32:03,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:03,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:32:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:03,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:32:03,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:32:03,240 INFO L87 Difference]: Start difference. First operand 3311 states and 5259 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 18:32:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:06,363 INFO L93 Difference]: Finished difference Result 8827 states and 14275 transitions. [2025-03-16 18:32:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-16 18:32:06,364 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 18:32:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:06,390 INFO L225 Difference]: With dead ends: 8827 [2025-03-16 18:32:06,390 INFO L226 Difference]: Without dead ends: 5557 [2025-03-16 18:32:06,400 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 18:32:06,400 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 2733 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 6250 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 6953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 6250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:06,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2840 Valid, 2262 Invalid, 6953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 6250 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-16 18:32:06,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2025-03-16 18:32:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5167. [2025-03-16 18:32:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 3830 states have (on average 1.5402088772845952) internal successors, (5899), 3994 states have internal predecessors, (5899), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 320 states have return successors, (1348), 988 states have call predecessors, (1348), 1008 states have call successors, (1348) [2025-03-16 18:32:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8263 transitions. [2025-03-16 18:32:06,598 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8263 transitions. Word has length 138 [2025-03-16 18:32:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:06,599 INFO L471 AbstractCegarLoop]: Abstraction has 5167 states and 8263 transitions. [2025-03-16 18:32:06,599 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 18:32:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8263 transitions. [2025-03-16 18:32:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-16 18:32:06,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:06,605 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 18:32:06,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 18:32:06,805 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 18:32:06,806 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:06,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1929053782, now seen corresponding path program 1 times [2025-03-16 18:32:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:06,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728910390] [2025-03-16 18:32:06,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:06,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:06,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 18:32:06,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 18:32:06,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:06,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:07,076 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 18:32:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728910390] [2025-03-16 18:32:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728910390] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258010353] [2025-03-16 18:32:07,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:07,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:07,079 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 18:32:07,081 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 18:32:07,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-16 18:32:07,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-16 18:32:07,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:07,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:07,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 18:32:07,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:07,417 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 18:32:07,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:07,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258010353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:07,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:07,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-16 18:32:07,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536089183] [2025-03-16 18:32:07,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:07,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:32:07,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:07,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:32:07,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:32:07,419 INFO L87 Difference]: Start difference. First operand 5167 states and 8263 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 18:32:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:07,728 INFO L93 Difference]: Finished difference Result 5169 states and 8264 transitions. [2025-03-16 18:32:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:32:07,728 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 18:32:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:07,757 INFO L225 Difference]: With dead ends: 5169 [2025-03-16 18:32:07,757 INFO L226 Difference]: Without dead ends: 5167 [2025-03-16 18:32:07,762 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 18:32:07,762 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 390 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 4425 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:07,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 4425 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:32:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2025-03-16 18:32:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 5167. [2025-03-16 18:32:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 3830 states have (on average 1.5336814621409922) internal successors, (5874), 3994 states have internal predecessors, (5874), 1016 states have call successors, (1016), 261 states have call predecessors, (1016), 320 states have return successors, (1348), 988 states have call predecessors, (1348), 1008 states have call successors, (1348) [2025-03-16 18:32:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8238 transitions. [2025-03-16 18:32:07,965 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8238 transitions. Word has length 143 [2025-03-16 18:32:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:07,966 INFO L471 AbstractCegarLoop]: Abstraction has 5167 states and 8238 transitions. [2025-03-16 18:32:07,966 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 18:32:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8238 transitions. [2025-03-16 18:32:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-16 18:32:07,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:07,971 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 18:32:07,980 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 18:32:08,175 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 18:32:08,175 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:08,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1312843409, now seen corresponding path program 1 times [2025-03-16 18:32:08,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:08,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792754417] [2025-03-16 18:32:08,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:08,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:08,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 18:32:08,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 18:32:08,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:08,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:08,392 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 18:32:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792754417] [2025-03-16 18:32:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792754417] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:08,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004001928] [2025-03-16 18:32:08,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:08,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:08,395 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 18:32:08,396 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 18:32:08,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 18:32:08,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 18:32:08,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:08,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:08,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:08,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:08,671 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 18:32:08,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:08,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004001928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:08,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:08,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:08,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916231422] [2025-03-16 18:32:08,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:08,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:08,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:08,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:08,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:08,672 INFO L87 Difference]: Start difference. First operand 5167 states and 8238 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 18:32:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:08,939 INFO L93 Difference]: Finished difference Result 10563 states and 17090 transitions. [2025-03-16 18:32:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:08,939 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 18:32:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:08,978 INFO L225 Difference]: With dead ends: 10563 [2025-03-16 18:32:08,979 INFO L226 Difference]: Without dead ends: 5437 [2025-03-16 18:32:08,997 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 18:32:08,998 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 144 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2425 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 18:32:08,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2425 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2025-03-16 18:32:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5401. [2025-03-16 18:32:09,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 4058 states have (on average 1.555446032528339) internal successors, (6312), 4222 states have internal predecessors, (6312), 1016 states have call successors, (1016), 267 states have call predecessors, (1016), 326 states have return successors, (1348), 988 states have call predecessors, (1348), 1008 states have call successors, (1348) [2025-03-16 18:32:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 8676 transitions. [2025-03-16 18:32:09,267 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 8676 transitions. Word has length 166 [2025-03-16 18:32:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:09,268 INFO L471 AbstractCegarLoop]: Abstraction has 5401 states and 8676 transitions. [2025-03-16 18:32:09,268 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 18:32:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 8676 transitions. [2025-03-16 18:32:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 18:32:09,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:09,273 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 18:32:09,281 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 18:32:09,474 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 18:32:09,475 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:09,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash -75462388, now seen corresponding path program 1 times [2025-03-16 18:32:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800290377] [2025-03-16 18:32:09,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:09,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 18:32:09,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 18:32:09,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:09,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:09,658 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 18:32:09,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800290377] [2025-03-16 18:32:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800290377] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:09,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313498334] [2025-03-16 18:32:09,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:09,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:09,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:09,661 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 18:32:09,663 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 18:32:09,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 18:32:09,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 18:32:09,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:09,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:09,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:09,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:09,936 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 18:32:09,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313498334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:09,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439108308] [2025-03-16 18:32:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:09,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:09,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:09,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:09,937 INFO L87 Difference]: Start difference. First operand 5401 states and 8676 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 18:32:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:10,343 INFO L93 Difference]: Finished difference Result 11049 states and 17966 transitions. [2025-03-16 18:32:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:10,344 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 18:32:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:10,384 INFO L225 Difference]: With dead ends: 11049 [2025-03-16 18:32:10,384 INFO L226 Difference]: Without dead ends: 5689 [2025-03-16 18:32:10,409 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 18:32:10,410 INFO L435 NwaCegarLoop]: 815 mSDtfsCounter, 142 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2422 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 18:32:10,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2422 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2025-03-16 18:32:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 5635. [2025-03-16 18:32:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5635 states, 4286 states have (on average 1.5748950069995333) internal successors, (6750), 4450 states have internal predecessors, (6750), 1016 states have call successors, (1016), 273 states have call predecessors, (1016), 332 states have return successors, (1348), 988 states have call predecessors, (1348), 1008 states have call successors, (1348) [2025-03-16 18:32:10,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5635 states to 5635 states and 9114 transitions. [2025-03-16 18:32:10,817 INFO L78 Accepts]: Start accepts. Automaton has 5635 states and 9114 transitions. Word has length 171 [2025-03-16 18:32:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:10,817 INFO L471 AbstractCegarLoop]: Abstraction has 5635 states and 9114 transitions. [2025-03-16 18:32:10,817 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 18:32:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5635 states and 9114 transitions. [2025-03-16 18:32:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-16 18:32:10,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:10,821 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 18:32:10,830 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 18:32:11,022 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 18:32:11,022 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:11,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash -555557908, now seen corresponding path program 1 times [2025-03-16 18:32:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:11,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361524852] [2025-03-16 18:32:11,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:11,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:11,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-16 18:32:11,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-16 18:32:11,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:11,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:11,216 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 18:32:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361524852] [2025-03-16 18:32:11,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361524852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:11,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594422740] [2025-03-16 18:32:11,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:11,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:11,219 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 18:32:11,221 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 18:32:11,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-16 18:32:11,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-16 18:32:11,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:11,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:11,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:11,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:11,489 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 18:32:11,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594422740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:11,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:11,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221528871] [2025-03-16 18:32:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:11,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:11,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:11,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:11,492 INFO L87 Difference]: Start difference. First operand 5635 states and 9114 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 18:32:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:11,804 INFO L93 Difference]: Finished difference Result 11535 states and 18842 transitions. [2025-03-16 18:32:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:11,805 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 18:32:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:11,836 INFO L225 Difference]: With dead ends: 11535 [2025-03-16 18:32:11,836 INFO L226 Difference]: Without dead ends: 5941 [2025-03-16 18:32:11,855 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 18:32:11,856 INFO L435 NwaCegarLoop]: 814 mSDtfsCounter, 140 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2419 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 18:32:11,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2419 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2025-03-16 18:32:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5869. [2025-03-16 18:32:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5869 states, 4514 states have (on average 1.592379264510412) internal successors, (7188), 4678 states have internal predecessors, (7188), 1016 states have call successors, (1016), 279 states have call predecessors, (1016), 338 states have return successors, (1348), 988 states have call predecessors, (1348), 1008 states have call successors, (1348) [2025-03-16 18:32:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5869 states to 5869 states and 9552 transitions. [2025-03-16 18:32:12,071 INFO L78 Accepts]: Start accepts. Automaton has 5869 states and 9552 transitions. Word has length 175 [2025-03-16 18:32:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:12,072 INFO L471 AbstractCegarLoop]: Abstraction has 5869 states and 9552 transitions. [2025-03-16 18:32:12,072 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 18:32:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5869 states and 9552 transitions. [2025-03-16 18:32:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-16 18:32:12,075 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:12,075 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 18:32:12,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-16 18:32:12,280 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 18:32:12,280 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:12,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1309810799, now seen corresponding path program 1 times [2025-03-16 18:32:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:12,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115728637] [2025-03-16 18:32:12,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:12,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-16 18:32:12,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-16 18:32:12,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:12,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:12,509 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 18:32:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115728637] [2025-03-16 18:32:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115728637] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032967872] [2025-03-16 18:32:12,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:12,512 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 18:32:12,514 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 18:32:12,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-16 18:32:12,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-16 18:32:12,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:12,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:12,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:12,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:12,794 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 18:32:12,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032967872] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:12,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59349320] [2025-03-16 18:32:12,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:12,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:12,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:12,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:12,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:12,795 INFO L87 Difference]: Start difference. First operand 5869 states and 9552 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 18:32:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:13,068 INFO L93 Difference]: Finished difference Result 12021 states and 19718 transitions. [2025-03-16 18:32:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:13,069 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 18:32:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:13,102 INFO L225 Difference]: With dead ends: 12021 [2025-03-16 18:32:13,102 INFO L226 Difference]: Without dead ends: 6193 [2025-03-16 18:32:13,122 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 18:32:13,126 INFO L435 NwaCegarLoop]: 811 mSDtfsCounter, 138 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2409 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 18:32:13,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2409 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2025-03-16 18:32:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 6103. [2025-03-16 18:32:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 4742 states have (on average 1.6081822016026992) internal successors, (7626), 4906 states have internal predecessors, (7626), 1016 states have call successors, (1016), 285 states have call predecessors, (1016), 344 states have return successors, (1348), 988 states have call predecessors, (1348), 1008 states have call successors, (1348) [2025-03-16 18:32:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 9990 transitions. [2025-03-16 18:32:13,333 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 9990 transitions. Word has length 178 [2025-03-16 18:32:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:13,334 INFO L471 AbstractCegarLoop]: Abstraction has 6103 states and 9990 transitions. [2025-03-16 18:32:13,334 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 18:32:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 9990 transitions. [2025-03-16 18:32:13,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-16 18:32:13,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:13,338 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:13,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-16 18:32:13,539 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 18:32:13,544 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:13,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -31096255, now seen corresponding path program 1 times [2025-03-16 18:32:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707957123] [2025-03-16 18:32:13,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:13,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 18:32:13,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 18:32:13,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:13,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:13,759 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 18:32:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707957123] [2025-03-16 18:32:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707957123] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728142334] [2025-03-16 18:32:13,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:13,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:13,762 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 18:32:13,764 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 18:32:13,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-16 18:32:14,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-16 18:32:14,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:14,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:14,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-16 18:32:14,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-16 18:32:14,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:14,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728142334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:14,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:14,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2025-03-16 18:32:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056926816] [2025-03-16 18:32:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:14,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:32:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:14,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:32:14,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:32:14,170 INFO L87 Difference]: Start difference. First operand 6103 states and 9990 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 7 states have internal predecessors, (119), 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 18:32:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:16,619 INFO L93 Difference]: Finished difference Result 19059 states and 31780 transitions. [2025-03-16 18:32:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:32:16,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 7 states have internal predecessors, (119), 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 18:32:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:16,672 INFO L225 Difference]: With dead ends: 19059 [2025-03-16 18:32:16,672 INFO L226 Difference]: Without dead ends: 10053 [2025-03-16 18:32:16,703 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 18:32:16,704 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 1971 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 4161 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 4642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 4161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:16,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 2345 Invalid, 4642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 4161 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 18:32:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10053 states. [2025-03-16 18:32:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10053 to 9980. [2025-03-16 18:32:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9980 states, 7653 states have (on average 1.603423494054619) internal successors, (12271), 7976 states have internal predecessors, (12271), 1724 states have call successors, (1724), 455 states have call predecessors, (1724), 602 states have return successors, (2363), 1696 states have call predecessors, (2363), 1716 states have call successors, (2363) [2025-03-16 18:32:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 16358 transitions. [2025-03-16 18:32:17,098 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 16358 transitions. Word has length 180 [2025-03-16 18:32:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:17,099 INFO L471 AbstractCegarLoop]: Abstraction has 9980 states and 16358 transitions. [2025-03-16 18:32:17,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 7 states have internal predecessors, (119), 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 18:32:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 16358 transitions. [2025-03-16 18:32:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-03-16 18:32:17,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:17,108 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:17,116 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 18:32:17,309 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 18:32:17,309 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:17,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1291306295, now seen corresponding path program 1 times [2025-03-16 18:32:17,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:17,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387880057] [2025-03-16 18:32:17,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:17,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:17,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-03-16 18:32:17,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-03-16 18:32:17,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:17,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-03-16 18:32:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387880057] [2025-03-16 18:32:17,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387880057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:17,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:17,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:32:17,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519007670] [2025-03-16 18:32:17,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:17,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:32:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:17,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:32:17,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:32:17,432 INFO L87 Difference]: Start difference. First operand 9980 states and 16358 transitions. Second operand has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:32:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:17,775 INFO L93 Difference]: Finished difference Result 19661 states and 32231 transitions. [2025-03-16 18:32:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:32:17,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:32:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:17,827 INFO L225 Difference]: With dead ends: 19661 [2025-03-16 18:32:17,827 INFO L226 Difference]: Without dead ends: 9362 [2025-03-16 18:32:17,859 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 18:32:17,860 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 30 mSDsluCounter, 5088 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:17,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5941 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states. [2025-03-16 18:32:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 9338. [2025-03-16 18:32:18,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9338 states, 7246 states have (on average 1.6168920783880762) internal successors, (11716), 7544 states have internal predecessors, (11716), 1539 states have call successors, (1539), 431 states have call predecessors, (1539), 552 states have return successors, (2011), 1490 states have call predecessors, (2011), 1531 states have call successors, (2011) [2025-03-16 18:32:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 15266 transitions. [2025-03-16 18:32:18,239 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 15266 transitions. Word has length 183 [2025-03-16 18:32:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:18,239 INFO L471 AbstractCegarLoop]: Abstraction has 9338 states and 15266 transitions. [2025-03-16 18:32:18,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 18:32:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 15266 transitions. [2025-03-16 18:32:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2025-03-16 18:32:18,249 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:18,249 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:18,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-16 18:32:18,249 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:18,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash 630288421, now seen corresponding path program 1 times [2025-03-16 18:32:18,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:18,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968340633] [2025-03-16 18:32:18,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:18,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 526 statements into 1 equivalence classes. [2025-03-16 18:32:18,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 526 of 526 statements. [2025-03-16 18:32:18,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:18,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2025-03-16 18:32:18,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968340633] [2025-03-16 18:32:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968340633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136168910] [2025-03-16 18:32:18,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:18,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:18,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:18,888 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 18:32:18,889 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 18:32:19,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 526 statements into 1 equivalence classes. [2025-03-16 18:32:19,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 526 of 526 statements. [2025-03-16 18:32:19,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:19,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:19,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 4024 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:32:19,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2025-03-16 18:32:19,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:19,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136168910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:19,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:19,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-16 18:32:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540600169] [2025-03-16 18:32:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:19,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:32:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:19,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:32:19,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:19,436 INFO L87 Difference]: Start difference. First operand 9338 states and 15266 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 18:32:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:19,860 INFO L93 Difference]: Finished difference Result 19172 states and 31776 transitions. [2025-03-16 18:32:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:32:19,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 526 [2025-03-16 18:32:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:19,916 INFO L225 Difference]: With dead ends: 19172 [2025-03-16 18:32:19,916 INFO L226 Difference]: Without dead ends: 14255 [2025-03-16 18:32:19,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 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 18:32:19,936 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 872 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1728 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 18:32:19,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1728 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:19,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14255 states. [2025-03-16 18:32:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14255 to 14253. [2025-03-16 18:32:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14253 states, 11009 states have (on average 1.6163139249704788) internal successors, (17794), 11490 states have internal predecessors, (17794), 2406 states have call successors, (2406), 655 states have call predecessors, (2406), 837 states have return successors, (3315), 2363 states have call predecessors, (3315), 2394 states have call successors, (3315) [2025-03-16 18:32:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14253 states to 14253 states and 23515 transitions. [2025-03-16 18:32:20,751 INFO L78 Accepts]: Start accepts. Automaton has 14253 states and 23515 transitions. Word has length 526 [2025-03-16 18:32:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:20,751 INFO L471 AbstractCegarLoop]: Abstraction has 14253 states and 23515 transitions. [2025-03-16 18:32:20,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 18:32:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 14253 states and 23515 transitions. [2025-03-16 18:32:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2025-03-16 18:32:20,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:20,767 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:20,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-16 18:32:20,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:20,967 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:20,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2100089255, now seen corresponding path program 1 times [2025-03-16 18:32:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435630392] [2025-03-16 18:32:20,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:20,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:21,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 527 statements into 1 equivalence classes. [2025-03-16 18:32:21,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 527 of 527 statements. [2025-03-16 18:32:21,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:21,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2025-03-16 18:32:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435630392] [2025-03-16 18:32:21,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435630392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:21,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798006158] [2025-03-16 18:32:21,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:21,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:21,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:21,480 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 18:32:21,481 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 18:32:21,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 527 statements into 1 equivalence classes. [2025-03-16 18:32:21,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 527 of 527 statements. [2025-03-16 18:32:21,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:21,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:21,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 4025 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:21,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2025-03-16 18:32:22,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:22,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798006158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:22,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:22,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:22,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684039873] [2025-03-16 18:32:22,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:22,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:22,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:22,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:22,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:22,029 INFO L87 Difference]: Start difference. First operand 14253 states and 23515 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 18:32:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:22,689 INFO L93 Difference]: Finished difference Result 28603 states and 47713 transitions. [2025-03-16 18:32:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:22,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 18:32:22,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:22,757 INFO L225 Difference]: With dead ends: 28603 [2025-03-16 18:32:22,757 INFO L226 Difference]: Without dead ends: 14388 [2025-03-16 18:32:22,801 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 18:32:22,802 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 22 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:22,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2544 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14388 states. [2025-03-16 18:32:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14388 to 14388. [2025-03-16 18:32:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14388 states, 11129 states have (on average 1.6177554137838082) internal successors, (18004), 11610 states have internal predecessors, (18004), 2406 states have call successors, (2406), 670 states have call predecessors, (2406), 852 states have return successors, (3315), 2363 states have call predecessors, (3315), 2394 states have call successors, (3315) [2025-03-16 18:32:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14388 states to 14388 states and 23725 transitions. [2025-03-16 18:32:23,421 INFO L78 Accepts]: Start accepts. Automaton has 14388 states and 23725 transitions. Word has length 527 [2025-03-16 18:32:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:23,421 INFO L471 AbstractCegarLoop]: Abstraction has 14388 states and 23725 transitions. [2025-03-16 18:32:23,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 18:32:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 14388 states and 23725 transitions. [2025-03-16 18:32:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2025-03-16 18:32:23,431 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:23,431 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:23,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:23,632 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 18:32:23,632 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:23,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1309982646, now seen corresponding path program 1 times [2025-03-16 18:32:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:23,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931920110] [2025-03-16 18:32:23,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:23,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 528 statements into 1 equivalence classes. [2025-03-16 18:32:23,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 528 of 528 statements. [2025-03-16 18:32:23,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:23,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2025-03-16 18:32:24,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931920110] [2025-03-16 18:32:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931920110] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354061037] [2025-03-16 18:32:24,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:24,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:24,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:24,203 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 18:32:24,204 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 18:32:24,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 528 statements into 1 equivalence classes. [2025-03-16 18:32:24,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 528 of 528 statements. [2025-03-16 18:32:24,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:24,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:24,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 4026 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:24,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2025-03-16 18:32:24,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:24,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354061037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:24,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:24,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:32:24,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103038337] [2025-03-16 18:32:24,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:24,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:24,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:24,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:24,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:24,778 INFO L87 Difference]: Start difference. First operand 14388 states and 23725 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 18:32:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:25,395 INFO L93 Difference]: Finished difference Result 28873 states and 48073 transitions. [2025-03-16 18:32:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:25,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 528 [2025-03-16 18:32:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:25,491 INFO L225 Difference]: With dead ends: 28873 [2025-03-16 18:32:25,492 INFO L226 Difference]: Without dead ends: 14523 [2025-03-16 18:32:25,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 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 18:32:25,557 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 20 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2538 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 18:32:25,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2538 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14523 states. [2025-03-16 18:32:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14523 to 14523. [2025-03-16 18:32:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14523 states, 11249 states have (on average 1.6191661481020536) internal successors, (18214), 11730 states have internal predecessors, (18214), 2406 states have call successors, (2406), 685 states have call predecessors, (2406), 867 states have return successors, (3315), 2363 states have call predecessors, (3315), 2394 states have call successors, (3315) [2025-03-16 18:32:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14523 states to 14523 states and 23935 transitions. [2025-03-16 18:32:26,119 INFO L78 Accepts]: Start accepts. Automaton has 14523 states and 23935 transitions. Word has length 528 [2025-03-16 18:32:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:26,120 INFO L471 AbstractCegarLoop]: Abstraction has 14523 states and 23935 transitions. [2025-03-16 18:32:26,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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 18:32:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 14523 states and 23935 transitions. [2025-03-16 18:32:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2025-03-16 18:32:26,133 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:26,133 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:26,145 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 18:32:26,333 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 18:32:26,334 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:26,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1362589274, now seen corresponding path program 1 times [2025-03-16 18:32:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627556321] [2025-03-16 18:32:26,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:26,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 528 statements into 1 equivalence classes. [2025-03-16 18:32:26,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 528 of 528 statements. [2025-03-16 18:32:26,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:26,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2025-03-16 18:32:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627556321] [2025-03-16 18:32:26,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627556321] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215922799] [2025-03-16 18:32:26,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:26,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:26,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:26,793 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 18:32:26,794 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 18:32:26,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 528 statements into 1 equivalence classes. [2025-03-16 18:32:27,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 528 of 528 statements. [2025-03-16 18:32:27,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:27,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:27,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 4026 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:32:27,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 739 proven. 260 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2025-03-16 18:32:27,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 18:32:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 133 proven. 36 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2025-03-16 18:32:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215922799] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 18:32:28,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 18:32:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 16 [2025-03-16 18:32:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543647120] [2025-03-16 18:32:28,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 18:32:28,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 18:32:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:28,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 18:32:28,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:32:28,045 INFO L87 Difference]: Start difference. First operand 14523 states and 23935 transitions. Second operand has 16 states, 16 states have (on average 26.5625) internal successors, (425), 14 states have internal predecessors, (425), 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 18:32:42,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:42,305 INFO L93 Difference]: Finished difference Result 69869 states and 122181 transitions. [2025-03-16 18:32:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-16 18:32:42,306 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 26.5625) internal successors, (425), 14 states have internal predecessors, (425), 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 528 [2025-03-16 18:32:42,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:42,591 INFO L225 Difference]: With dead ends: 69869 [2025-03-16 18:32:42,592 INFO L226 Difference]: Without dead ends: 55310 [2025-03-16 18:32:42,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1073 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=562, Invalid=3344, Unknown=0, NotChecked=0, Total=3906 [2025-03-16 18:32:42,716 INFO L435 NwaCegarLoop]: 1353 mSDtfsCounter, 13382 mSDsluCounter, 7268 mSDsCounter, 0 mSdLazyCounter, 27963 mSolverCounterSat, 5138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13382 SdHoareTripleChecker+Valid, 8621 SdHoareTripleChecker+Invalid, 33101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5138 IncrementalHoareTripleChecker+Valid, 27963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:42,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13382 Valid, 8621 Invalid, 33101 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5138 Valid, 27963 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2025-03-16 18:32:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55310 states. [2025-03-16 18:32:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55310 to 46696. [2025-03-16 18:32:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46696 states, 34802 states have (on average 1.5921498764438826) internal successors, (55410), 36788 states have internal predecessors, (55410), 9134 states have call successors, (9134), 2022 states have call predecessors, (9134), 2759 states have return successors, (14048), 9217 states have call predecessors, (14048), 9114 states have call successors, (14048) [2025-03-16 18:32:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46696 states to 46696 states and 78592 transitions. [2025-03-16 18:32:45,385 INFO L78 Accepts]: Start accepts. Automaton has 46696 states and 78592 transitions. Word has length 528 [2025-03-16 18:32:45,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:45,385 INFO L471 AbstractCegarLoop]: Abstraction has 46696 states and 78592 transitions. [2025-03-16 18:32:45,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 26.5625) internal successors, (425), 14 states have internal predecessors, (425), 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 18:32:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 46696 states and 78592 transitions. [2025-03-16 18:32:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2025-03-16 18:32:45,401 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:45,401 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:45,417 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 18:32:45,601 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 18:32:45,601 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:45,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1065301104, now seen corresponding path program 1 times [2025-03-16 18:32:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774906163] [2025-03-16 18:32:45,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:45,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:45,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 553 statements into 1 equivalence classes. [2025-03-16 18:32:45,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 553 of 553 statements. [2025-03-16 18:32:45,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:45,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 29 proven. 140 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2025-03-16 18:32:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:46,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774906163] [2025-03-16 18:32:46,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774906163] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:46,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768246604] [2025-03-16 18:32:46,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:46,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:46,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:46,060 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 18:32:46,061 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 18:32:46,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 553 statements into 1 equivalence classes. [2025-03-16 18:32:46,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 553 of 553 statements. [2025-03-16 18:32:46,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:46,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:46,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 4114 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:32:46,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 677 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2025-03-16 18:32:46,629 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:46,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768246604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:46,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:46,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-16 18:32:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367841999] [2025-03-16 18:32:46,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:46,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:32:46,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:46,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:32:46,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:46,631 INFO L87 Difference]: Start difference. First operand 46696 states and 78592 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 18:32:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:51,708 INFO L93 Difference]: Finished difference Result 125356 states and 218786 transitions. [2025-03-16 18:32:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:32:51,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 553 [2025-03-16 18:32:51,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:52,388 INFO L225 Difference]: With dead ends: 125356 [2025-03-16 18:32:52,388 INFO L226 Difference]: Without dead ends: 86026 [2025-03-16 18:32:52,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 559 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 18:32:52,781 INFO L435 NwaCegarLoop]: 1641 mSDtfsCounter, 845 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2516 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 18:32:52,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2516 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:52,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86026 states. [2025-03-16 18:32:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86026 to 86024. [2025-03-16 18:32:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86024 states, 63790 states have (on average 1.5886816115378586) internal successors, (101342), 67564 states have internal predecessors, (101342), 17186 states have call successors, (17186), 3682 states have call predecessors, (17186), 5047 states have return successors, (31296), 17441 states have call predecessors, (31296), 17150 states have call successors, (31296) [2025-03-16 18:32:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86024 states to 86024 states and 149824 transitions. [2025-03-16 18:32:58,825 INFO L78 Accepts]: Start accepts. Automaton has 86024 states and 149824 transitions. Word has length 553 [2025-03-16 18:32:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:58,825 INFO L471 AbstractCegarLoop]: Abstraction has 86024 states and 149824 transitions. [2025-03-16 18:32:58,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 18:32:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 86024 states and 149824 transitions. [2025-03-16 18:32:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2025-03-16 18:32:58,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:58,858 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:58,871 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 18:32:59,058 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 18:32:59,058 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:59,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1800762904, now seen corresponding path program 1 times [2025-03-16 18:32:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:59,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807525920] [2025-03-16 18:32:59,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:59,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:59,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 554 statements into 1 equivalence classes. [2025-03-16 18:32:59,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 554 of 554 statements. [2025-03-16 18:32:59,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:59,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 29 proven. 140 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2025-03-16 18:32:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807525920] [2025-03-16 18:32:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807525920] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913624722] [2025-03-16 18:32:59,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:59,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:59,639 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 18:32:59,640 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 18:32:59,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 554 statements into 1 equivalence classes. [2025-03-16 18:33:00,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 554 of 554 statements. [2025-03-16 18:33:00,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:00,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:00,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 4115 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-16 18:33:00,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2025-03-16 18:33:00,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:00,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913624722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:00,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:00,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2025-03-16 18:33:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236482952] [2025-03-16 18:33:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:00,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:33:00,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:00,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:33:00,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:33:00,615 INFO L87 Difference]: Start difference. First operand 86024 states and 149824 transitions. Second operand has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 8 states have internal predecessors, (227), 6 states have call successors, (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)