./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_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_spec2_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 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:35:44,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:35:44,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:35:44,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:35:44,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:35:44,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:35:44,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:35:44,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:35:44,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:35:44,948 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:35:44,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:35:44,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:35:44,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:35:44,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:35:44,949 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:35:44,949 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:35:44,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:35:44,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:35:44,950 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 -> 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c [2025-03-16 18:35:45,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:35:45,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:35:45,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:35:45,197 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:35:45,197 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:35:45,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2025-03-16 18:35:46,338 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7055b0713/f18dd79740544745824c34068285c2aa/FLAGb32dea2e3 [2025-03-16 18:35:46,694 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:35:46,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2025-03-16 18:35:46,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7055b0713/f18dd79740544745824c34068285c2aa/FLAGb32dea2e3 [2025-03-16 18:35:46,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7055b0713/f18dd79740544745824c34068285c2aa [2025-03-16 18:35:46,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:35:46,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:35:46,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:35:46,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:35:46,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:35:46,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:35:46" (1/1) ... [2025-03-16 18:35:46,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179209d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:46, skipping insertion in model container [2025-03-16 18:35:46,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:35:46" (1/1) ... [2025-03-16 18:35:46,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:35:47,275 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_spec2_product32.cil.c[40079,40092] [2025-03-16 18:35:47,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:35:47,398 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:35:47,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [48] [2025-03-16 18:35:47,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [236] [2025-03-16 18:35:47,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [904] [2025-03-16 18:35:47,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1270] [2025-03-16 18:35:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1308] [2025-03-16 18:35:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1406] [2025-03-16 18:35:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1420] [2025-03-16 18:35:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1540] [2025-03-16 18:35:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1891] [2025-03-16 18:35:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1900] [2025-03-16 18:35:47,458 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_spec2_product32.cil.c[40079,40092] [2025-03-16 18:35:47,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:35:47,531 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:35:47,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47 WrapperNode [2025-03-16 18:35:47,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:35:47,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:35:47,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:35:47,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:35:47,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,601 INFO L138 Inliner]: procedures = 99, calls = 355, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 977 [2025-03-16 18:35:47,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:35:47,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:35:47,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:35:47,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:35:47,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,651 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 18:35:47,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,675 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:35:47,697 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:35:47,697 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:35:47,697 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:35:47,701 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (1/1) ... [2025-03-16 18:35:47,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:35:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:35:47,737 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 18:35:47,740 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 18:35:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:35:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:35:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:35:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:35:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:35:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:35:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:35:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:35:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:35:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:35:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-16 18:35:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-16 18:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:35:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:35:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:35:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:35:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:35:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:35:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:35:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:35:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:35:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:35:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:35:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:35:47,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:35:47,765 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:35:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:35:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:35:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:35:47,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:35:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:35:47,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:35:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:35:47,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:35:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-16 18:35:47,766 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-16 18:35:47,919 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:35:47,922 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:35:48,031 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2847-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~25#1; [2025-03-16 18:35:48,032 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2875: #res#1 := ~retValue_acc~26#1; [2025-03-16 18:35:48,055 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1459: #res := ~retValue_acc~8; [2025-03-16 18:35:48,087 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3550: #res := ~retValue_acc~30; [2025-03-16 18:35:48,143 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2728-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~22#1; [2025-03-16 18:35:48,143 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2757: #res#1 := ~retValue_acc~23#1; [2025-03-16 18:35:48,143 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2791-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~24#1; [2025-03-16 18:35:48,153 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2920: #res := ~retValue_acc~28; [2025-03-16 18:35:48,332 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2688: #res := ~retValue_acc~21; [2025-03-16 18:35:48,434 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2323-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-16 18:35:48,435 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2336-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-16 18:35:48,439 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2160: #res := ~retValue_acc~15; [2025-03-16 18:35:48,445 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L901: #res := ~retValue_acc~2; [2025-03-16 18:35:48,459 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1537: #res := ~retValue_acc~10; [2025-03-16 18:35:48,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1974: #res := ~retValue_acc~13; [2025-03-16 18:35:48,464 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2151: #res := ~retValue_acc~14; [2025-03-16 18:35:48,594 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1498: #res := ~retValue_acc~9; [2025-03-16 18:35:48,615 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2194: #res := ~retValue_acc~16; [2025-03-16 18:35:48,676 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2243-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-03-16 18:35:48,725 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L590: #res := ~retValue_acc~1; [2025-03-16 18:35:48,795 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1305-1: valid_product_#res#1 := valid_product_~retValue_acc~7#1; [2025-03-16 18:35:48,795 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1888-1: main_#res#1 := main_~retValue_acc~12#1; [2025-03-16 18:35:48,804 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L354: #res := ~retValue_acc~0; [2025-03-16 18:35:48,873 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2906-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~27#1; [2025-03-16 18:35:49,001 INFO L? ?]: Removed 484 outVars from TransFormulas that were not future-live. [2025-03-16 18:35:49,001 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:35:49,015 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:35:49,015 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:35:49,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:35:49 BoogieIcfgContainer [2025-03-16 18:35:49,015 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:35:49,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:35:49,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:35:49,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:35:49,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:35:46" (1/3) ... [2025-03-16 18:35:49,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7b11ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:35:49, skipping insertion in model container [2025-03-16 18:35:49,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:35:47" (2/3) ... [2025-03-16 18:35:49,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7b11ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:35:49, skipping insertion in model container [2025-03-16 18:35:49,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:35:49" (3/3) ... [2025-03-16 18:35:49,025 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2025-03-16 18:35:49,037 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:35:49,039 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product32.cil.c that has 28 procedures, 596 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:35:49,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:35:49,110 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;@4d753d0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:35:49,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:35:49,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 462 states have (on average 1.6883116883116882) internal successors, (780), 485 states have internal predecessors, (780), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:35:49,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-16 18:35:49,124 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:49,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:49,125 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:49,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1093128856, now seen corresponding path program 1 times [2025-03-16 18:35:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013633368] [2025-03-16 18:35:49,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:49,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:49,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-16 18:35:49,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-16 18:35:49,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:49,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:49,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013633368] [2025-03-16 18:35:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013633368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:49,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:49,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:35:49,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055291810] [2025-03-16 18:35:49,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:49,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:35:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:49,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:35:49,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:35:49,587 INFO L87 Difference]: Start difference. First operand has 596 states, 462 states have (on average 1.6883116883116882) internal successors, (780), 485 states have internal predecessors, (780), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:49,702 INFO L93 Difference]: Finished difference Result 1177 states and 1960 transitions. [2025-03-16 18:35:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:35:49,704 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2025-03-16 18:35:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:49,720 INFO L225 Difference]: With dead ends: 1177 [2025-03-16 18:35:49,721 INFO L226 Difference]: Without dead ends: 589 [2025-03-16 18:35:49,729 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 18:35:49,730 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 5 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:49,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2906 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-03-16 18:35:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2025-03-16 18:35:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6849015317286653) internal successors, (770), 478 states have internal predecessors, (770), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 975 transitions. [2025-03-16 18:35:49,799 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 975 transitions. Word has length 55 [2025-03-16 18:35:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:49,800 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 975 transitions. [2025-03-16 18:35:49,800 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 975 transitions. [2025-03-16 18:35:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-16 18:35:49,803 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:49,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:49,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:35:49,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:49,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:49,804 INFO L85 PathProgramCache]: Analyzing trace with hash 794832937, now seen corresponding path program 1 times [2025-03-16 18:35:49,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:49,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605917788] [2025-03-16 18:35:49,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:49,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:49,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-16 18:35:49,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-16 18:35:49,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:49,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:49,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:49,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605917788] [2025-03-16 18:35:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605917788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:49,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:35:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133310103] [2025-03-16 18:35:49,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:49,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:35:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:49,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:35:49,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:35:49,965 INFO L87 Difference]: Start difference. First operand 589 states and 975 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:50,041 INFO L93 Difference]: Finished difference Result 1165 states and 1932 transitions. [2025-03-16 18:35:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:35:50,042 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2025-03-16 18:35:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:50,048 INFO L225 Difference]: With dead ends: 1165 [2025-03-16 18:35:50,048 INFO L226 Difference]: Without dead ends: 589 [2025-03-16 18:35:50,050 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 18:35:50,051 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 4 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:50,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2888 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-03-16 18:35:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2025-03-16 18:35:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6827133479212253) internal successors, (769), 478 states have internal predecessors, (769), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 974 transitions. [2025-03-16 18:35:50,081 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 974 transitions. Word has length 57 [2025-03-16 18:35:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:50,081 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 974 transitions. [2025-03-16 18:35:50,081 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 974 transitions. [2025-03-16 18:35:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-16 18:35:50,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:50,085 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:50,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:35:50,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:50,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1309191327, now seen corresponding path program 1 times [2025-03-16 18:35:50,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:50,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008325411] [2025-03-16 18:35:50,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:50,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:50,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-16 18:35:50,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-16 18:35:50,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:50,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008325411] [2025-03-16 18:35:50,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008325411] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:50,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:50,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:35:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831686348] [2025-03-16 18:35:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:50,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:35:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:50,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:35:50,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:35:50,213 INFO L87 Difference]: Start difference. First operand 589 states and 974 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:50,269 INFO L93 Difference]: Finished difference Result 1165 states and 1931 transitions. [2025-03-16 18:35:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:35:50,270 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2025-03-16 18:35:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:50,276 INFO L225 Difference]: With dead ends: 1165 [2025-03-16 18:35:50,277 INFO L226 Difference]: Without dead ends: 589 [2025-03-16 18:35:50,279 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 18:35:50,279 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 3 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:50,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2888 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-03-16 18:35:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2025-03-16 18:35:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6805251641137855) internal successors, (768), 478 states have internal predecessors, (768), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 973 transitions. [2025-03-16 18:35:50,304 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 973 transitions. Word has length 58 [2025-03-16 18:35:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:50,305 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 973 transitions. [2025-03-16 18:35:50,305 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 973 transitions. [2025-03-16 18:35:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-16 18:35:50,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:50,307 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:50,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:35:50,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:50,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113172, now seen corresponding path program 1 times [2025-03-16 18:35:50,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:50,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226641615] [2025-03-16 18:35:50,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:50,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-16 18:35:50,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-16 18:35:50,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:50,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:50,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226641615] [2025-03-16 18:35:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226641615] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:50,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:35:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135234963] [2025-03-16 18:35:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:50,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:35:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:50,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:35:50,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:35:50,448 INFO L87 Difference]: Start difference. First operand 589 states and 973 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:50,514 INFO L93 Difference]: Finished difference Result 1165 states and 1930 transitions. [2025-03-16 18:35:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:35:50,515 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2025-03-16 18:35:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:50,518 INFO L225 Difference]: With dead ends: 1165 [2025-03-16 18:35:50,518 INFO L226 Difference]: Without dead ends: 589 [2025-03-16 18:35:50,521 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 18:35:50,523 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 2 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:50,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2888 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-03-16 18:35:50,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2025-03-16 18:35:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6783369803063457) internal successors, (767), 478 states have internal predecessors, (767), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 972 transitions. [2025-03-16 18:35:50,547 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 972 transitions. Word has length 59 [2025-03-16 18:35:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:50,548 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 972 transitions. [2025-03-16 18:35:50,548 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 972 transitions. [2025-03-16 18:35:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 18:35:50,549 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:50,549 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:50,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:35:50,549 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:50,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:50,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1587532420, now seen corresponding path program 1 times [2025-03-16 18:35:50,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385679326] [2025-03-16 18:35:50,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:50,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 18:35:50,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 18:35:50,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:50,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:50,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:50,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385679326] [2025-03-16 18:35:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385679326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:35:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834463010] [2025-03-16 18:35:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:50,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:35:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:50,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:35:50,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:35:50,660 INFO L87 Difference]: Start difference. First operand 589 states and 972 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:50,699 INFO L93 Difference]: Finished difference Result 1165 states and 1929 transitions. [2025-03-16 18:35:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:35:50,700 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2025-03-16 18:35:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:50,705 INFO L225 Difference]: With dead ends: 1165 [2025-03-16 18:35:50,705 INFO L226 Difference]: Without dead ends: 589 [2025-03-16 18:35:50,708 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 18:35:50,709 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 1 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:50,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2888 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:50,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-03-16 18:35:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2025-03-16 18:35:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.676148796498906) internal successors, (766), 478 states have internal predecessors, (766), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 971 transitions. [2025-03-16 18:35:50,732 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 971 transitions. Word has length 60 [2025-03-16 18:35:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:50,732 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 971 transitions. [2025-03-16 18:35:50,733 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 971 transitions. [2025-03-16 18:35:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:35:50,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:50,734 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:50,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:35:50,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:50,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1085348433, now seen corresponding path program 1 times [2025-03-16 18:35:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023290215] [2025-03-16 18:35:50,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:50,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:35:50,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:35:50,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:50,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:50,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023290215] [2025-03-16 18:35:50,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023290215] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:50,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:50,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 18:35:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935376070] [2025-03-16 18:35:50,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:50,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:35:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:50,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:35:50,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:35:50,969 INFO L87 Difference]: Start difference. First operand 589 states and 971 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:35:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:51,079 INFO L93 Difference]: Finished difference Result 1131 states and 1861 transitions. [2025-03-16 18:35:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:35:51,080 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2025-03-16 18:35:51,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:51,084 INFO L225 Difference]: With dead ends: 1131 [2025-03-16 18:35:51,084 INFO L226 Difference]: Without dead ends: 604 [2025-03-16 18:35:51,088 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 18:35:51,089 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 91 mSDsluCounter, 6630 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7589 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:51,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7589 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:35:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2025-03-16 18:35:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 602. [2025-03-16 18:35:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 467 states have (on average 1.6723768736616702) internal successors, (781), 490 states have internal predecessors, (781), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2025-03-16 18:35:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 990 transitions. [2025-03-16 18:35:51,113 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 990 transitions. Word has length 61 [2025-03-16 18:35:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:51,114 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 990 transitions. [2025-03-16 18:35:51,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:35:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 990 transitions. [2025-03-16 18:35:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:35:51,117 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:51,117 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:51,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:35:51,118 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:51,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1093107792, now seen corresponding path program 1 times [2025-03-16 18:35:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:51,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909408139] [2025-03-16 18:35:51,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:51,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:35:51,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:35:51,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:51,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:51,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:51,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909408139] [2025-03-16 18:35:51,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909408139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:51,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:51,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:35:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18784282] [2025-03-16 18:35:51,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:51,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:35:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:51,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:35:51,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:35:51,192 INFO L87 Difference]: Start difference. First operand 602 states and 990 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:51,230 INFO L93 Difference]: Finished difference Result 1183 states and 1955 transitions. [2025-03-16 18:35:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:35:51,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2025-03-16 18:35:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:51,235 INFO L225 Difference]: With dead ends: 1183 [2025-03-16 18:35:51,235 INFO L226 Difference]: Without dead ends: 583 [2025-03-16 18:35:51,238 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 18:35:51,238 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 0 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:51,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2890 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2025-03-16 18:35:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2025-03-16 18:35:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 451 states have (on average 1.6674057649667406) internal successors, (752), 472 states have internal predecessors, (752), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 957 transitions. [2025-03-16 18:35:51,264 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 957 transitions. Word has length 61 [2025-03-16 18:35:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:51,264 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 957 transitions. [2025-03-16 18:35:51,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 957 transitions. [2025-03-16 18:35:51,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 18:35:51,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:51,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:51,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:35:51,267 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:51,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:51,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1993044925, now seen corresponding path program 1 times [2025-03-16 18:35:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:51,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121396671] [2025-03-16 18:35:51,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:51,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:51,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 18:35:51,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 18:35:51,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:51,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:51,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121396671] [2025-03-16 18:35:51,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121396671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:51,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:51,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086143036] [2025-03-16 18:35:51,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:51,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:51,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:51,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:51,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:51,435 INFO L87 Difference]: Start difference. First operand 583 states and 957 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:51,617 INFO L93 Difference]: Finished difference Result 1128 states and 1853 transitions. [2025-03-16 18:35:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:35:51,618 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2025-03-16 18:35:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:51,623 INFO L225 Difference]: With dead ends: 1128 [2025-03-16 18:35:51,623 INFO L226 Difference]: Without dead ends: 592 [2025-03-16 18:35:51,626 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 18:35:51,626 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 55 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:51,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4541 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:35:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-03-16 18:35:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 583. [2025-03-16 18:35:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 451 states have (on average 1.6585365853658536) internal successors, (748), 472 states have internal predecessors, (748), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 953 transitions. [2025-03-16 18:35:51,650 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 953 transitions. Word has length 62 [2025-03-16 18:35:51,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:51,651 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 953 transitions. [2025-03-16 18:35:51,651 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 953 transitions. [2025-03-16 18:35:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:35:51,652 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:51,652 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:51,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:35:51,652 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:51,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1303730248, now seen corresponding path program 1 times [2025-03-16 18:35:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:51,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301998086] [2025-03-16 18:35:51,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:51,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:51,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:35:51,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:35:51,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:51,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:51,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:51,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301998086] [2025-03-16 18:35:51,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301998086] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:51,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:51,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:51,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685546736] [2025-03-16 18:35:51,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:51,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:51,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:51,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:51,780 INFO L87 Difference]: Start difference. First operand 583 states and 953 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:51,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:51,929 INFO L93 Difference]: Finished difference Result 1128 states and 1849 transitions. [2025-03-16 18:35:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:35:51,930 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2025-03-16 18:35:51,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:51,934 INFO L225 Difference]: With dead ends: 1128 [2025-03-16 18:35:51,934 INFO L226 Difference]: Without dead ends: 592 [2025-03-16 18:35:51,936 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 18:35:51,939 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 54 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:51,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4541 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:35:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-03-16 18:35:51,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 583. [2025-03-16 18:35:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 451 states have (on average 1.6496674057649667) internal successors, (744), 472 states have internal predecessors, (744), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 949 transitions. [2025-03-16 18:35:51,960 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 949 transitions. Word has length 63 [2025-03-16 18:35:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:51,960 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 949 transitions. [2025-03-16 18:35:51,963 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 949 transitions. [2025-03-16 18:35:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:35:51,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:51,964 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:51,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:35:51,965 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:51,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash 596921018, now seen corresponding path program 1 times [2025-03-16 18:35:51,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:51,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769538679] [2025-03-16 18:35:51,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:51,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:51,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:35:51,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:35:51,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:51,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769538679] [2025-03-16 18:35:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769538679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:52,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:52,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521469601] [2025-03-16 18:35:52,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:52,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:52,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:52,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:52,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:52,097 INFO L87 Difference]: Start difference. First operand 583 states and 949 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:52,245 INFO L93 Difference]: Finished difference Result 1128 states and 1845 transitions. [2025-03-16 18:35:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:35:52,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2025-03-16 18:35:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:52,250 INFO L225 Difference]: With dead ends: 1128 [2025-03-16 18:35:52,251 INFO L226 Difference]: Without dead ends: 592 [2025-03-16 18:35:52,253 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 18:35:52,254 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 53 mSDsluCounter, 3610 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:52,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4523 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:35:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-03-16 18:35:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 583. [2025-03-16 18:35:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 451 states have (on average 1.6407982261640799) internal successors, (740), 472 states have internal predecessors, (740), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 945 transitions. [2025-03-16 18:35:52,273 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 945 transitions. Word has length 64 [2025-03-16 18:35:52,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:52,273 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 945 transitions. [2025-03-16 18:35:52,273 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 945 transitions. [2025-03-16 18:35:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:35:52,274 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:52,274 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:52,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:35:52,274 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:52,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash -871508885, now seen corresponding path program 1 times [2025-03-16 18:35:52,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:52,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401662948] [2025-03-16 18:35:52,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:52,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:52,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:35:52,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:35:52,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:52,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401662948] [2025-03-16 18:35:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401662948] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:52,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:52,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:35:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684120629] [2025-03-16 18:35:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:52,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:35:52,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:52,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:35:52,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:35:52,396 INFO L87 Difference]: Start difference. First operand 583 states and 945 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:35:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:52,474 INFO L93 Difference]: Finished difference Result 1119 states and 1827 transitions. [2025-03-16 18:35:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:35:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2025-03-16 18:35:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:52,479 INFO L225 Difference]: With dead ends: 1119 [2025-03-16 18:35:52,479 INFO L226 Difference]: Without dead ends: 562 [2025-03-16 18:35:52,482 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 18:35:52,482 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 84 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5531 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:52,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5531 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-03-16 18:35:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2025-03-16 18:35:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.6418604651162791) internal successors, (706), 451 states have internal predecessors, (706), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 911 transitions. [2025-03-16 18:35:52,505 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 911 transitions. Word has length 64 [2025-03-16 18:35:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:52,506 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 911 transitions. [2025-03-16 18:35:52,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:35:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 911 transitions. [2025-03-16 18:35:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 18:35:52,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:52,507 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:52,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 18:35:52,508 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:52,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash 409034645, now seen corresponding path program 1 times [2025-03-16 18:35:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746777663] [2025-03-16 18:35:52,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:52,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 18:35:52,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 18:35:52,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:52,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:52,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:52,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746777663] [2025-03-16 18:35:52,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746777663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:52,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:52,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:52,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773104586] [2025-03-16 18:35:52,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:52,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:52,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:52,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:52,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:52,605 INFO L87 Difference]: Start difference. First operand 562 states and 911 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:52,665 INFO L93 Difference]: Finished difference Result 1098 states and 1793 transitions. [2025-03-16 18:35:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:35:52,666 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-03-16 18:35:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:52,694 INFO L225 Difference]: With dead ends: 1098 [2025-03-16 18:35:52,694 INFO L226 Difference]: Without dead ends: 562 [2025-03-16 18:35:52,696 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 18:35:52,696 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 17 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:52,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4461 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-03-16 18:35:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2025-03-16 18:35:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 451 states have internal predecessors, (705), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 910 transitions. [2025-03-16 18:35:52,711 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 910 transitions. Word has length 65 [2025-03-16 18:35:52,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:52,711 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 910 transitions. [2025-03-16 18:35:52,711 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:52,711 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 910 transitions. [2025-03-16 18:35:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:35:52,712 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:52,712 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:52,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 18:35:52,712 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:52,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:52,713 INFO L85 PathProgramCache]: Analyzing trace with hash -99009097, now seen corresponding path program 1 times [2025-03-16 18:35:52,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:52,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113704393] [2025-03-16 18:35:52,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:52,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:52,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:35:52,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:35:52,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:52,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:52,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113704393] [2025-03-16 18:35:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113704393] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217945095] [2025-03-16 18:35:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:52,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:52,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:52,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:52,793 INFO L87 Difference]: Start difference. First operand 562 states and 910 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:52,848 INFO L93 Difference]: Finished difference Result 1098 states and 1792 transitions. [2025-03-16 18:35:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:35:52,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2025-03-16 18:35:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:52,852 INFO L225 Difference]: With dead ends: 1098 [2025-03-16 18:35:52,852 INFO L226 Difference]: Without dead ends: 562 [2025-03-16 18:35:52,854 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 18:35:52,855 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 16 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:52,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4461 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:35:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-03-16 18:35:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2025-03-16 18:35:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.6372093023255814) internal successors, (704), 451 states have internal predecessors, (704), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 909 transitions. [2025-03-16 18:35:52,869 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 909 transitions. Word has length 66 [2025-03-16 18:35:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:52,870 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 909 transitions. [2025-03-16 18:35:52,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:35:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 909 transitions. [2025-03-16 18:35:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:35:52,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:52,871 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:52,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:35:52,871 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:52,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1941996686, now seen corresponding path program 1 times [2025-03-16 18:35:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:52,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210002965] [2025-03-16 18:35:52,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:52,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:35:52,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:35:52,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:52,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:53,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210002965] [2025-03-16 18:35:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210002965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:53,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:53,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 18:35:53,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771636485] [2025-03-16 18:35:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:53,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 18:35:53,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:53,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 18:35:53,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:35:53,022 INFO L87 Difference]: Start difference. First operand 562 states and 909 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:35:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:53,124 INFO L93 Difference]: Finished difference Result 1092 states and 1780 transitions. [2025-03-16 18:35:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:35:53,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2025-03-16 18:35:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:53,130 INFO L225 Difference]: With dead ends: 1092 [2025-03-16 18:35:53,130 INFO L226 Difference]: Without dead ends: 562 [2025-03-16 18:35:53,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 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 18:35:53,133 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 6 mSDsluCounter, 7122 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8015 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:53,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8015 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:35:53,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-03-16 18:35:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2025-03-16 18:35:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.6348837209302325) internal successors, (703), 451 states have internal predecessors, (703), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:35:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 908 transitions. [2025-03-16 18:35:53,151 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 908 transitions. Word has length 67 [2025-03-16 18:35:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:53,151 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 908 transitions. [2025-03-16 18:35:53,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:35:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 908 transitions. [2025-03-16 18:35:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 18:35:53,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:53,152 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:53,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 18:35:53,152 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:53,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash -730025340, now seen corresponding path program 1 times [2025-03-16 18:35:53,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:53,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319892167] [2025-03-16 18:35:53,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:53,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:35:53,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:35:53,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:53,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:35:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319892167] [2025-03-16 18:35:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319892167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:53,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:53,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205609882] [2025-03-16 18:35:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:53,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:53,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:53,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:53,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:53,363 INFO L87 Difference]: Start difference. First operand 562 states and 908 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-16 18:35:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:55,325 INFO L93 Difference]: Finished difference Result 1746 states and 2876 transitions. [2025-03-16 18:35:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:35:55,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 68 [2025-03-16 18:35:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:55,334 INFO L225 Difference]: With dead ends: 1746 [2025-03-16 18:35:55,334 INFO L226 Difference]: Without dead ends: 1224 [2025-03-16 18:35:55,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:35:55,337 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 3362 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:55,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3436 Valid, 1020 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 18:35:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2025-03-16 18:35:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1102. [2025-03-16 18:35:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 849 states have (on average 1.6489988221436984) internal successors, (1400), 879 states have internal predecessors, (1400), 204 states have call successors, (204), 47 states have call predecessors, (204), 48 states have return successors, (206), 188 states have call predecessors, (206), 199 states have call successors, (206) [2025-03-16 18:35:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1810 transitions. [2025-03-16 18:35:55,385 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1810 transitions. Word has length 68 [2025-03-16 18:35:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:55,386 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1810 transitions. [2025-03-16 18:35:55,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-16 18:35:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1810 transitions. [2025-03-16 18:35:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-16 18:35:55,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:55,390 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:35:55,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:35:55,390 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:55,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1117021567, now seen corresponding path program 1 times [2025-03-16 18:35:55,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:55,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628418165] [2025-03-16 18:35:55,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:55,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:35:55,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:35:55,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:55,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:35:55,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:55,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628418165] [2025-03-16 18:35:55,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628418165] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:55,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 18:35:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349051560] [2025-03-16 18:35:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:55,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 18:35:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:55,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 18:35:55,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:35:55,670 INFO L87 Difference]: Start difference. First operand 1102 states and 1810 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:35:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:59,982 INFO L93 Difference]: Finished difference Result 3491 states and 5754 transitions. [2025-03-16 18:35:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 18:35:59,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 122 [2025-03-16 18:35:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:59,995 INFO L225 Difference]: With dead ends: 3491 [2025-03-16 18:35:59,995 INFO L226 Difference]: Without dead ends: 2429 [2025-03-16 18:36:00,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2025-03-16 18:36:00,001 INFO L435 NwaCegarLoop]: 639 mSDtfsCounter, 1960 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 9863 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 10259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 9863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:00,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 3769 Invalid, 10259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 9863 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-03-16 18:36:00,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2025-03-16 18:36:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2315. [2025-03-16 18:36:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 1752 states have (on average 1.629566210045662) internal successors, (2855), 1809 states have internal predecessors, (2855), 458 states have call successors, (458), 93 states have call predecessors, (458), 104 states have return successors, (477), 436 states have call predecessors, (477), 453 states have call successors, (477) [2025-03-16 18:36:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3790 transitions. [2025-03-16 18:36:00,137 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3790 transitions. Word has length 122 [2025-03-16 18:36:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:00,138 INFO L471 AbstractCegarLoop]: Abstraction has 2315 states and 3790 transitions. [2025-03-16 18:36:00,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:36:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3790 transitions. [2025-03-16 18:36:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-16 18:36:00,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:00,142 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:00,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 18:36:00,143 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:00,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1703900030, now seen corresponding path program 1 times [2025-03-16 18:36:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515007978] [2025-03-16 18:36:00,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:00,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:36:00,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:36:00,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:00,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515007978] [2025-03-16 18:36:00,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515007978] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860151039] [2025-03-16 18:36:00,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:00,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:00,282 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 18:36:00,284 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 18:36:00,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:36:00,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:36:00,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:00,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:00,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:36:00,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:00,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:00,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860151039] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:00,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:00,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:36:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907716435] [2025-03-16 18:36:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:00,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:00,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:00,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:00,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:00,704 INFO L87 Difference]: Start difference. First operand 2315 states and 3790 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 18:36:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:01,213 INFO L93 Difference]: Finished difference Result 4638 states and 7751 transitions. [2025-03-16 18:36:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:01,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 123 [2025-03-16 18:36:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:01,230 INFO L225 Difference]: With dead ends: 4638 [2025-03-16 18:36:01,230 INFO L226 Difference]: Without dead ends: 2363 [2025-03-16 18:36:01,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 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 18:36:01,242 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 860 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:01,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2266 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2025-03-16 18:36:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2025-03-16 18:36:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 1794 states have (on average 1.6315496098104794) internal successors, (2927), 1851 states have internal predecessors, (2927), 458 states have call successors, (458), 99 states have call predecessors, (458), 110 states have return successors, (481), 436 states have call predecessors, (481), 453 states have call successors, (481) [2025-03-16 18:36:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3866 transitions. [2025-03-16 18:36:01,343 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3866 transitions. Word has length 123 [2025-03-16 18:36:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:01,343 INFO L471 AbstractCegarLoop]: Abstraction has 2363 states and 3866 transitions. [2025-03-16 18:36:01,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 18:36:01,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3866 transitions. [2025-03-16 18:36:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-16 18:36:01,347 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:01,347 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-16 18:36:01,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:01,552 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,SelfDestructingSolverStorable16 [2025-03-16 18:36:01,552 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:01,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:01,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1732377884, now seen corresponding path program 1 times [2025-03-16 18:36:01,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:01,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070613911] [2025-03-16 18:36:01,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:01,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:36:01,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:36:01,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:01,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070613911] [2025-03-16 18:36:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070613911] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298664976] [2025-03-16 18:36:01,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:01,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:01,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:01,707 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 18:36:01,709 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 18:36:01,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:36:01,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:36:01,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:01,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:01,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:36:01,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:02,074 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298664976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:36:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402380145] [2025-03-16 18:36:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:02,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:02,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:02,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:02,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:02,076 INFO L87 Difference]: Start difference. First operand 2363 states and 3866 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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 18:36:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:02,575 INFO L93 Difference]: Finished difference Result 4734 states and 7887 transitions. [2025-03-16 18:36:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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 125 [2025-03-16 18:36:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:02,591 INFO L225 Difference]: With dead ends: 4734 [2025-03-16 18:36:02,592 INFO L226 Difference]: Without dead ends: 2411 [2025-03-16 18:36:02,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 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 18:36:02,603 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 854 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:02,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 2263 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2025-03-16 18:36:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2411. [2025-03-16 18:36:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 1836 states have (on average 1.633442265795207) internal successors, (2999), 1893 states have internal predecessors, (2999), 458 states have call successors, (458), 105 states have call predecessors, (458), 116 states have return successors, (485), 436 states have call predecessors, (485), 453 states have call successors, (485) [2025-03-16 18:36:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3942 transitions. [2025-03-16 18:36:02,719 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3942 transitions. Word has length 125 [2025-03-16 18:36:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:02,719 INFO L471 AbstractCegarLoop]: Abstraction has 2411 states and 3942 transitions. [2025-03-16 18:36:02,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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 18:36:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3942 transitions. [2025-03-16 18:36:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-16 18:36:02,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:02,724 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:02,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:02,925 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,SelfDestructingSolverStorable17 [2025-03-16 18:36:02,925 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:02,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1415126498, now seen corresponding path program 1 times [2025-03-16 18:36:02,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610701511] [2025-03-16 18:36:02,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:02,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:02,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 18:36:02,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 18:36:02,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:02,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:03,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:03,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610701511] [2025-03-16 18:36:03,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610701511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:03,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774473120] [2025-03-16 18:36:03,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:03,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:03,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:03,060 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 18:36:03,062 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 18:36:03,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 18:36:03,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 18:36:03,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:03,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:03,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:36:03,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:03,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:03,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774473120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:03,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:03,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:36:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048595940] [2025-03-16 18:36:03,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:03,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:03,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:03,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:03,393 INFO L87 Difference]: Start difference. First operand 2411 states and 3942 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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 18:36:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:03,910 INFO L93 Difference]: Finished difference Result 4830 states and 8023 transitions. [2025-03-16 18:36:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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 127 [2025-03-16 18:36:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:03,926 INFO L225 Difference]: With dead ends: 4830 [2025-03-16 18:36:03,926 INFO L226 Difference]: Without dead ends: 2459 [2025-03-16 18:36:03,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:03,941 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 853 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:03,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2260 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2025-03-16 18:36:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2459. [2025-03-16 18:36:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 1878 states have (on average 1.6352502662406816) internal successors, (3071), 1935 states have internal predecessors, (3071), 458 states have call successors, (458), 111 states have call predecessors, (458), 122 states have return successors, (489), 436 states have call predecessors, (489), 453 states have call successors, (489) [2025-03-16 18:36:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 4018 transitions. [2025-03-16 18:36:04,043 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 4018 transitions. Word has length 127 [2025-03-16 18:36:04,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:04,043 INFO L471 AbstractCegarLoop]: Abstraction has 2459 states and 4018 transitions. [2025-03-16 18:36:04,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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 18:36:04,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 4018 transitions. [2025-03-16 18:36:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-16 18:36:04,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:04,047 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-16 18:36:04,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:04,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:04,248 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:04,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash 193856810, now seen corresponding path program 1 times [2025-03-16 18:36:04,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:04,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264674967] [2025-03-16 18:36:04,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:04,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:04,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-16 18:36:04,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-16 18:36:04,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:04,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:04,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264674967] [2025-03-16 18:36:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264674967] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824572415] [2025-03-16 18:36:04,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:04,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:04,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:04,358 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 18:36:04,360 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 18:36:04,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-16 18:36:04,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-16 18:36:04,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:04,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:04,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 1695 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:36:04,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:04,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:04,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824572415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:04,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-16 18:36:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379350267] [2025-03-16 18:36:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:04,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:04,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:04,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:04,738 INFO L87 Difference]: Start difference. First operand 2459 states and 4018 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 18:36:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:05,206 INFO L93 Difference]: Finished difference Result 4926 states and 8159 transitions. [2025-03-16 18:36:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:05,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 18:36:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:05,219 INFO L225 Difference]: With dead ends: 4926 [2025-03-16 18:36:05,219 INFO L226 Difference]: Without dead ends: 2507 [2025-03-16 18:36:05,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:05,230 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 834 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:05,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2257 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2025-03-16 18:36:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2025-03-16 18:36:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1920 states have (on average 1.6369791666666667) internal successors, (3143), 1977 states have internal predecessors, (3143), 458 states have call successors, (458), 117 states have call predecessors, (458), 128 states have return successors, (493), 436 states have call predecessors, (493), 453 states have call successors, (493) [2025-03-16 18:36:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4094 transitions. [2025-03-16 18:36:05,320 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4094 transitions. Word has length 129 [2025-03-16 18:36:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:05,321 INFO L471 AbstractCegarLoop]: Abstraction has 2507 states and 4094 transitions. [2025-03-16 18:36:05,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 18:36:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4094 transitions. [2025-03-16 18:36:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 18:36:05,325 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:05,325 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-16 18:36:05,334 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 18:36:05,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:05,526 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:05,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash -419726786, now seen corresponding path program 1 times [2025-03-16 18:36:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:05,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967862462] [2025-03-16 18:36:05,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:05,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:36:05,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:36:05,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:05,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 18:36:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967862462] [2025-03-16 18:36:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967862462] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947374424] [2025-03-16 18:36:05,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:05,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:05,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:05,789 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 18:36:05,791 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 18:36:05,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:36:06,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:36:06,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:06,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:06,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:36:06,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:36:06,179 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947374424] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:06,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2025-03-16 18:36:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473405951] [2025-03-16 18:36:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:06,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:06,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:06,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:36:06,180 INFO L87 Difference]: Start difference. First operand 2507 states and 4094 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-16 18:36:06,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:06,567 INFO L93 Difference]: Finished difference Result 2615 states and 4274 transitions. [2025-03-16 18:36:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:06,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 131 [2025-03-16 18:36:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:06,584 INFO L225 Difference]: With dead ends: 2615 [2025-03-16 18:36:06,584 INFO L226 Difference]: Without dead ends: 2600 [2025-03-16 18:36:06,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:36:06,588 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 836 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:06,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 2290 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:36:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2025-03-16 18:36:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2513. [2025-03-16 18:36:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 1926 states have (on average 1.6349948078920042) internal successors, (3149), 1983 states have internal predecessors, (3149), 458 states have call successors, (458), 117 states have call predecessors, (458), 128 states have return successors, (493), 436 states have call predecessors, (493), 453 states have call successors, (493) [2025-03-16 18:36:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4100 transitions. [2025-03-16 18:36:06,673 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4100 transitions. Word has length 131 [2025-03-16 18:36:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:06,674 INFO L471 AbstractCegarLoop]: Abstraction has 2513 states and 4100 transitions. [2025-03-16 18:36:06,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-16 18:36:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4100 transitions. [2025-03-16 18:36:06,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-16 18:36:06,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:06,678 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-16 18:36:06,687 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 18:36:06,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:06,879 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:06,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1594337084, now seen corresponding path program 1 times [2025-03-16 18:36:06,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:06,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923220631] [2025-03-16 18:36:06,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:06,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:06,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-16 18:36:06,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-16 18:36:06,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:06,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 18:36:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923220631] [2025-03-16 18:36:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923220631] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128860553] [2025-03-16 18:36:07,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:07,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:07,159 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 18:36:07,160 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 18:36:07,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-16 18:36:07,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-16 18:36:07,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:07,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:07,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 18:36:07,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:36:07,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:07,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128860553] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:07,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:07,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-16 18:36:07,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506314840] [2025-03-16 18:36:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:07,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:07,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:07,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:07,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:36:07,611 INFO L87 Difference]: Start difference. First operand 2513 states and 4100 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:36:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:07,949 INFO L93 Difference]: Finished difference Result 2629 states and 4267 transitions. [2025-03-16 18:36:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:07,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2025-03-16 18:36:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:07,964 INFO L225 Difference]: With dead ends: 2629 [2025-03-16 18:36:07,964 INFO L226 Difference]: Without dead ends: 2614 [2025-03-16 18:36:07,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 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 18:36:07,970 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 836 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:07,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 3550 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:36:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2025-03-16 18:36:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2596. [2025-03-16 18:36:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 1993 states have (on average 1.6312092323130958) internal successors, (3251), 2050 states have internal predecessors, (3251), 466 states have call successors, (466), 125 states have call predecessors, (466), 136 states have return successors, (506), 444 states have call predecessors, (506), 461 states have call successors, (506) [2025-03-16 18:36:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 4223 transitions. [2025-03-16 18:36:08,054 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 4223 transitions. Word has length 137 [2025-03-16 18:36:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:08,054 INFO L471 AbstractCegarLoop]: Abstraction has 2596 states and 4223 transitions. [2025-03-16 18:36:08,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:36:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 4223 transitions. [2025-03-16 18:36:08,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 18:36:08,059 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:08,059 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:08,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 18:36:08,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:08,260 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:08,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:08,260 INFO L85 PathProgramCache]: Analyzing trace with hash -762734491, now seen corresponding path program 1 times [2025-03-16 18:36:08,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:08,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383801051] [2025-03-16 18:36:08,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:08,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 18:36:08,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 18:36:08,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:08,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:08,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383801051] [2025-03-16 18:36:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383801051] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647162727] [2025-03-16 18:36:08,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:08,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:08,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:08,540 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 18:36:08,542 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 18:36:08,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 18:36:08,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 18:36:08,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:08,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:08,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 18:36:08,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-16 18:36:08,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:08,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647162727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:08,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:08,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-16 18:36:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311594837] [2025-03-16 18:36:08,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:08,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:08,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:08,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:36:08,964 INFO L87 Difference]: Start difference. First operand 2596 states and 4223 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 6 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-16 18:36:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:10,136 INFO L93 Difference]: Finished difference Result 5984 states and 9747 transitions. [2025-03-16 18:36:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:10,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 6 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 147 [2025-03-16 18:36:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:10,156 INFO L225 Difference]: With dead ends: 5984 [2025-03-16 18:36:10,157 INFO L226 Difference]: Without dead ends: 3434 [2025-03-16 18:36:10,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 153 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 18:36:10,166 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 2096 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:10,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 1047 Invalid, 2207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 18:36:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2025-03-16 18:36:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3327. [2025-03-16 18:36:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 2522 states have (on average 1.6137985725614592) internal successors, (4070), 2598 states have internal predecessors, (4070), 626 states have call successors, (626), 161 states have call predecessors, (626), 178 states have return successors, (686), 600 states have call predecessors, (686), 621 states have call successors, (686) [2025-03-16 18:36:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5382 transitions. [2025-03-16 18:36:10,294 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5382 transitions. Word has length 147 [2025-03-16 18:36:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:10,294 INFO L471 AbstractCegarLoop]: Abstraction has 3327 states and 5382 transitions. [2025-03-16 18:36:10,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 6 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-16 18:36:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5382 transitions. [2025-03-16 18:36:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 18:36:10,298 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:10,298 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:10,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:10,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:10,499 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:10,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1871549690, now seen corresponding path program 1 times [2025-03-16 18:36:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262290416] [2025-03-16 18:36:10,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:10,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 18:36:10,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 18:36:10,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:10,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:10,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:10,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262290416] [2025-03-16 18:36:10,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262290416] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:10,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119399255] [2025-03-16 18:36:10,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:10,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:10,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:10,751 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 18:36:10,753 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 18:36:10,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 18:36:10,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 18:36:10,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:10,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:10,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-16 18:36:11,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:36:11,130 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:11,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119399255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:11,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:11,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-16 18:36:11,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31637080] [2025-03-16 18:36:11,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:11,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:11,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:11,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:36:11,131 INFO L87 Difference]: Start difference. First operand 3327 states and 5382 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-16 18:36:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:13,132 INFO L93 Difference]: Finished difference Result 10881 states and 17831 transitions. [2025-03-16 18:36:13,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 18:36:13,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2025-03-16 18:36:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:13,172 INFO L225 Difference]: With dead ends: 10881 [2025-03-16 18:36:13,172 INFO L226 Difference]: Without dead ends: 7600 [2025-03-16 18:36:13,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-16 18:36:13,184 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 2213 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 4151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:13,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 2144 Invalid, 4151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 18:36:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2025-03-16 18:36:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 7121. [2025-03-16 18:36:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7121 states, 5388 states have (on average 1.6052338530066814) internal successors, (8649), 5561 states have internal predecessors, (8649), 1314 states have call successors, (1314), 335 states have call predecessors, (1314), 418 states have return successors, (1610), 1290 states have call predecessors, (1610), 1309 states have call successors, (1610) [2025-03-16 18:36:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 11573 transitions. [2025-03-16 18:36:13,550 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 11573 transitions. Word has length 147 [2025-03-16 18:36:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:13,552 INFO L471 AbstractCegarLoop]: Abstraction has 7121 states and 11573 transitions. [2025-03-16 18:36:13,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-16 18:36:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 11573 transitions. [2025-03-16 18:36:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 18:36:13,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:13,558 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:13,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 18:36:13,758 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,SelfDestructingSolverStorable23 [2025-03-16 18:36:13,758 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:13,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash -898464270, now seen corresponding path program 1 times [2025-03-16 18:36:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148125529] [2025-03-16 18:36:13,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:13,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 18:36:13,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 18:36:13,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:13,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:13,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:13,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148125529] [2025-03-16 18:36:13,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148125529] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:13,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955470481] [2025-03-16 18:36:13,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:13,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:13,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:13,989 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 18:36:13,991 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 18:36:14,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 18:36:14,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 18:36:14,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:14,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:14,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:14,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:36:14,251 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:14,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955470481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:14,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:14,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-16 18:36:14,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712828873] [2025-03-16 18:36:14,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:14,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:14,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:14,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:36:14,253 INFO L87 Difference]: Start difference. First operand 7121 states and 11573 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 18:36:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:14,660 INFO L93 Difference]: Finished difference Result 17420 states and 28556 transitions. [2025-03-16 18:36:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:14,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2025-03-16 18:36:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:14,706 INFO L225 Difference]: With dead ends: 17420 [2025-03-16 18:36:14,706 INFO L226 Difference]: Without dead ends: 10348 [2025-03-16 18:36:14,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 160 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 18:36:14,728 INFO L435 NwaCegarLoop]: 1633 mSDtfsCounter, 854 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:14,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2532 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2025-03-16 18:36:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 7109. [2025-03-16 18:36:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7109 states, 5382 states have (on average 1.60479375696767) internal successors, (8637), 5549 states have internal predecessors, (8637), 1314 states have call successors, (1314), 335 states have call predecessors, (1314), 412 states have return successors, (1574), 1290 states have call predecessors, (1574), 1309 states have call successors, (1574) [2025-03-16 18:36:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 11525 transitions. [2025-03-16 18:36:15,083 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 11525 transitions. Word has length 152 [2025-03-16 18:36:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:15,084 INFO L471 AbstractCegarLoop]: Abstraction has 7109 states and 11525 transitions. [2025-03-16 18:36:15,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 18:36:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 11525 transitions. [2025-03-16 18:36:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 18:36:15,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:15,088 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:15,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:15,288 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,SelfDestructingSolverStorable24 [2025-03-16 18:36:15,288 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:15,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1923158191, now seen corresponding path program 1 times [2025-03-16 18:36:15,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:15,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531760345] [2025-03-16 18:36:15,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:15,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 18:36:15,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 18:36:15,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:15,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:15,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531760345] [2025-03-16 18:36:15,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531760345] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:15,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667702289] [2025-03-16 18:36:15,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:15,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:15,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:15,507 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 18:36:15,508 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 18:36:15,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 18:36:15,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 18:36:15,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:15,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:15,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 18:36:15,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:36:15,846 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:15,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667702289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:15,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:15,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:36:15,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657987280] [2025-03-16 18:36:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:15,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:15,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:15,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:36:15,847 INFO L87 Difference]: Start difference. First operand 7109 states and 11525 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:18,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:18,007 INFO L93 Difference]: Finished difference Result 19181 states and 31674 transitions. [2025-03-16 18:36:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:18,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 152 [2025-03-16 18:36:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:18,076 INFO L225 Difference]: With dead ends: 19181 [2025-03-16 18:36:18,077 INFO L226 Difference]: Without dead ends: 12112 [2025-03-16 18:36:18,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 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 18:36:18,115 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 2003 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:18,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 927 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 18:36:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12112 states. [2025-03-16 18:36:18,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12112 to 11532. [2025-03-16 18:36:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 8622 states have (on average 1.5944096497332405) internal successors, (13747), 8939 states have internal predecessors, (13747), 2232 states have call successors, (2232), 524 states have call predecessors, (2232), 677 states have return successors, (2906), 2230 states have call predecessors, (2906), 2227 states have call successors, (2906) [2025-03-16 18:36:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 18885 transitions. [2025-03-16 18:36:18,689 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 18885 transitions. Word has length 152 [2025-03-16 18:36:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:18,690 INFO L471 AbstractCegarLoop]: Abstraction has 11532 states and 18885 transitions. [2025-03-16 18:36:18,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 18885 transitions. [2025-03-16 18:36:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-16 18:36:18,696 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:18,696 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:18,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-16 18:36:18,897 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,SelfDestructingSolverStorable25 [2025-03-16 18:36:18,899 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:18,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash 511432355, now seen corresponding path program 1 times [2025-03-16 18:36:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138224649] [2025-03-16 18:36:18,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:18,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:18,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-16 18:36:18,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-16 18:36:18,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:18,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138224649] [2025-03-16 18:36:19,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138224649] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231142394] [2025-03-16 18:36:19,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:19,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:19,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:19,187 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 18:36:19,194 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 18:36:19,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-16 18:36:19,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-16 18:36:19,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:19,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:19,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 18:36:19,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:36:19,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231142394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:19,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:19,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:36:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702907359] [2025-03-16 18:36:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:19,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:19,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:19,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:19,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:36:19,592 INFO L87 Difference]: Start difference. First operand 11532 states and 18885 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:21,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:21,734 INFO L93 Difference]: Finished difference Result 33892 states and 57478 transitions. [2025-03-16 18:36:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:21,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 153 [2025-03-16 18:36:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:21,880 INFO L225 Difference]: With dead ends: 33892 [2025-03-16 18:36:21,880 INFO L226 Difference]: Without dead ends: 22400 [2025-03-16 18:36:21,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 161 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 18:36:21,940 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 2006 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:21,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 895 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 18:36:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22400 states. [2025-03-16 18:36:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22400 to 21361. [2025-03-16 18:36:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21361 states, 15687 states have (on average 1.5836680053547523) internal successors, (24843), 16376 states have internal predecessors, (24843), 4424 states have call successors, (4424), 902 states have call predecessors, (4424), 1249 states have return successors, (6572), 4490 states have call predecessors, (6572), 4419 states have call successors, (6572) [2025-03-16 18:36:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21361 states to 21361 states and 35839 transitions. [2025-03-16 18:36:23,590 INFO L78 Accepts]: Start accepts. Automaton has 21361 states and 35839 transitions. Word has length 153 [2025-03-16 18:36:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:23,591 INFO L471 AbstractCegarLoop]: Abstraction has 21361 states and 35839 transitions. [2025-03-16 18:36:23,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 21361 states and 35839 transitions. [2025-03-16 18:36:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-16 18:36:23,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:23,595 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:23,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-16 18:36:23,796 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,SelfDestructingSolverStorable26 [2025-03-16 18:36:23,796 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:23,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1325675829, now seen corresponding path program 1 times [2025-03-16 18:36:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:23,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511711121] [2025-03-16 18:36:23,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:23,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-16 18:36:23,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-16 18:36:23,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:23,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511711121] [2025-03-16 18:36:24,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511711121] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:24,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297313452] [2025-03-16 18:36:24,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:24,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:24,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:24,168 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 18:36:24,169 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 18:36:24,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-16 18:36:24,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-16 18:36:24,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:24,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:24,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 18:36:24,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:36:24,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:24,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297313452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:24,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:36:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29576108] [2025-03-16 18:36:24,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:24,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:24,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:24,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:24,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:36:24,535 INFO L87 Difference]: Start difference. First operand 21361 states and 35839 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:28,266 INFO L93 Difference]: Finished difference Result 66963 states and 119325 transitions. [2025-03-16 18:36:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 154 [2025-03-16 18:36:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:28,533 INFO L225 Difference]: With dead ends: 66963 [2025-03-16 18:36:28,533 INFO L226 Difference]: Without dead ends: 45642 [2025-03-16 18:36:28,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 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 18:36:28,645 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 1993 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:28,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 891 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 18:36:28,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45642 states. [2025-03-16 18:36:31,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45642 to 43650. [2025-03-16 18:36:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43650 states, 31376 states have (on average 1.572635135135135) internal successors, (49343), 32995 states have internal predecessors, (49343), 9772 states have call successors, (9772), 1658 states have call predecessors, (9772), 2501 states have return successors, (17214), 10046 states have call predecessors, (17214), 9767 states have call successors, (17214) [2025-03-16 18:36:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43650 states to 43650 states and 76329 transitions. [2025-03-16 18:36:31,958 INFO L78 Accepts]: Start accepts. Automaton has 43650 states and 76329 transitions. Word has length 154 [2025-03-16 18:36:31,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:31,959 INFO L471 AbstractCegarLoop]: Abstraction has 43650 states and 76329 transitions. [2025-03-16 18:36:31,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:31,959 INFO L276 IsEmpty]: Start isEmpty. Operand 43650 states and 76329 transitions. [2025-03-16 18:36:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-16 18:36:31,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:31,964 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:31,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-16 18:36:32,165 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,SelfDestructingSolverStorable27 [2025-03-16 18:36:32,165 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:32,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1853508829, now seen corresponding path program 1 times [2025-03-16 18:36:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:32,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526059587] [2025-03-16 18:36:32,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:32,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:32,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-16 18:36:32,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-16 18:36:32,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:32,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526059587] [2025-03-16 18:36:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526059587] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660600199] [2025-03-16 18:36:32,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:32,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:32,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:32,364 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 18:36:32,365 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 18:36:32,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-16 18:36:32,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-16 18:36:32,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:32,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:32,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 18:36:32,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:36:32,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:32,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660600199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:32,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:32,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:36:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827669845] [2025-03-16 18:36:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:32,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:32,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:32,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:36:32,693 INFO L87 Difference]: Start difference. First operand 43650 states and 76329 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:40,521 INFO L93 Difference]: Finished difference Result 142898 states and 275998 transitions. [2025-03-16 18:36:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:40,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 155 [2025-03-16 18:36:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:41,469 INFO L225 Difference]: With dead ends: 142898 [2025-03-16 18:36:41,469 INFO L226 Difference]: Without dead ends: 99288 [2025-03-16 18:36:41,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 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 18:36:41,713 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 1980 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:41,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 887 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 18:36:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99288 states. [2025-03-16 18:36:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99288 to 95523. [2025-03-16 18:36:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95523 states, 67101 states have (on average 1.5612733044216927) internal successors, (104763), 71066 states have internal predecessors, (104763), 23128 states have call successors, (23128), 3170 states have call predecessors, (23128), 5293 states have return successors, (49972), 24034 states have call predecessors, (49972), 23123 states have call successors, (49972) [2025-03-16 18:36:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95523 states to 95523 states and 177863 transitions. [2025-03-16 18:36:49,131 INFO L78 Accepts]: Start accepts. Automaton has 95523 states and 177863 transitions. Word has length 155 [2025-03-16 18:36:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:49,131 INFO L471 AbstractCegarLoop]: Abstraction has 95523 states and 177863 transitions. [2025-03-16 18:36:49,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:36:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 95523 states and 177863 transitions. [2025-03-16 18:36:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-16 18:36:49,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:49,137 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:49,145 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 18:36:49,337 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,SelfDestructingSolverStorable28 [2025-03-16 18:36:49,338 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:49,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:49,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1623981637, now seen corresponding path program 1 times [2025-03-16 18:36:49,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:49,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200679784] [2025-03-16 18:36:49,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:49,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:49,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-16 18:36:49,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-16 18:36:49,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:49,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:36:49,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:49,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200679784] [2025-03-16 18:36:49,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200679784] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:49,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708286421] [2025-03-16 18:36:49,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:49,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:49,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:49,551 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 18:36:49,552 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 18:36:49,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-16 18:36:49,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-16 18:36:49,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:49,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:49,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 18:36:49,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:36:49,884 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708286421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:49,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:36:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693126263] [2025-03-16 18:36:49,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:49,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:49,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:49,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:49,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:36:49,886 INFO L87 Difference]: Start difference. First operand 95523 states and 177863 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)