./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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_spec9_product28.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:04:11,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:04:11,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:04:11,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:04:11,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:04:11,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:04:11,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:04:11,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:04:11,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:04:11,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:04:11,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:04:11,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:04:11,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:04:11,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:04:11,506 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:04:11,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:04:11,506 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:04:11,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:04:11,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:04:11,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:04:11,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:04:11,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:04:11,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:04:11,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:04:11,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:04:11,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:04:11,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:04:11,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:04:11,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:04:11,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:04:11,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:04:11,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:04:11,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:04:11,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:04:11,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:04:11,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:04:11,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:04:11,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:04:11,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:04:11,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:04:11,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:04:11,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:04:11,517 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 [2024-11-18 14:04:11,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:04:11,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:04:11,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:04:11,828 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:04:11,828 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:04:11,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2024-11-18 14:04:13,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:04:13,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:04:13,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2024-11-18 14:04:13,653 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf630e0c/940cbf90eec54b66b2d612bf214908cd/FLAG5dad4671c [2024-11-18 14:04:13,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf630e0c/940cbf90eec54b66b2d612bf214908cd [2024-11-18 14:04:13,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:04:13,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:04:13,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:04:13,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:04:13,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:04:13,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:04:13" (1/1) ... [2024-11-18 14:04:13,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495c434d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:13, skipping insertion in model container [2024-11-18 14:04:13,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:04:13" (1/1) ... [2024-11-18 14:04:13,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:04:14,467 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_spec9_product28.cil.c[73050,73063] [2024-11-18 14:04:14,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:04:14,484 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:04:14,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-18 14:04:14,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [716] [2024-11-18 14:04:14,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [837] [2024-11-18 14:04:14,499 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [875] [2024-11-18 14:04:14,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2483] [2024-11-18 14:04:14,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [2849] [2024-11-18 14:04:14,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3009] [2024-11-18 14:04:14,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3361] [2024-11-18 14:04:14,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3373] [2024-11-18 14:04:14,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3464] [2024-11-18 14:04:14,596 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_spec9_product28.cil.c[73050,73063] [2024-11-18 14:04:14,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:04:14,630 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:04:14,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14 WrapperNode [2024-11-18 14:04:14,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:04:14,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:04:14,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:04:14,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:04:14,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,724 INFO L138 Inliner]: procedures = 97, calls = 345, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1130 [2024-11-18 14:04:14,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:04:14,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:04:14,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:04:14,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:04:14,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,753 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,789 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 14:04:14,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:04:14,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:04:14,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:04:14,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:04:14,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (1/1) ... [2024-11-18 14:04:14,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:04:14,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:14,934 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) [2024-11-18 14:04:14,939 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 [2024-11-18 14:04:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-18 14:04:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-18 14:04:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:04:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:04:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:04:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:04:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:04:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:04:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:04:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:04:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:04:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:04:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 14:04:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 14:04:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:04:14,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:04:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:04:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:04:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:04:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:04:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:04:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-18 14:04:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-18 14:04:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:04:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:04:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:04:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:04:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-18 14:04:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-18 14:04:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:04:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:04:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:04:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:04:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:04:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-18 14:04:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-18 14:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:04:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:04:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:04:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:04:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:04:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:04:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:04:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:04:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2024-11-18 14:04:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2024-11-18 14:04:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:04:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:04:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:04:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:04:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:04:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:04:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:04:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:04:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:04:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:04:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:04:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:04:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:04:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:04:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:04:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:04:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:04:15,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:04:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:04:15,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:04:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:04:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:04:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-18 14:04:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-18 14:04:15,218 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:04:15,222 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:04:16,484 INFO L? ?]: Removed 456 outVars from TransFormulas that were not future-live. [2024-11-18 14:04:16,485 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:04:16,525 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:04:16,527 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:04:16,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:04:16 BoogieIcfgContainer [2024-11-18 14:04:16,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:04:16,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:04:16,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:04:16,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:04:16,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:04:13" (1/3) ... [2024-11-18 14:04:16,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456d75d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:04:16, skipping insertion in model container [2024-11-18 14:04:16,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:04:14" (2/3) ... [2024-11-18 14:04:16,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456d75d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:04:16, skipping insertion in model container [2024-11-18 14:04:16,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:04:16" (3/3) ... [2024-11-18 14:04:16,539 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2024-11-18 14:04:16,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:04:16,555 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:04:16,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:04:16,650 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;@166ad0bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:04:16,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:04:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 573 states, 448 states have (on average 1.6875) internal successors, (756), 471 states have internal predecessors, (756), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 14:04:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 14:04:16,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:16,678 INFO L215 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] [2024-11-18 14:04:16,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:16,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2105504779, now seen corresponding path program 1 times [2024-11-18 14:04:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:16,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035444601] [2024-11-18 14:04:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:17,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035444601] [2024-11-18 14:04:17,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035444601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:17,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:17,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:04:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671192545] [2024-11-18 14:04:17,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:17,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:04:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:17,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:04:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:17,283 INFO L87 Difference]: Start difference. First operand has 573 states, 448 states have (on average 1.6875) internal successors, (756), 471 states have internal predecessors, (756), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:17,466 INFO L93 Difference]: Finished difference Result 1126 states and 1875 transitions. [2024-11-18 14:04:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:04:17,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-11-18 14:04:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:17,495 INFO L225 Difference]: With dead ends: 1126 [2024-11-18 14:04:17,495 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 14:04:17,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:17,505 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 5 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2783 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 [2024-11-18 14:04:17,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2783 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:17,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 14:04:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-18 14:04:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6832579185520362) internal successors, (744), 463 states have internal predecessors, (744), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 933 transitions. [2024-11-18 14:04:17,599 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 933 transitions. Word has length 62 [2024-11-18 14:04:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:17,599 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 933 transitions. [2024-11-18 14:04:17,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 933 transitions. [2024-11-18 14:04:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 14:04:17,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:17,604 INFO L215 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] [2024-11-18 14:04:17,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:04:17,605 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:17,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:17,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1663681637, now seen corresponding path program 1 times [2024-11-18 14:04:17,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:17,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774137759] [2024-11-18 14:04:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:17,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:17,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774137759] [2024-11-18 14:04:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774137759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:17,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:17,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:04:17,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294256482] [2024-11-18 14:04:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:17,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:04:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:17,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:04:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:17,802 INFO L87 Difference]: Start difference. First operand 565 states and 933 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:17,880 INFO L93 Difference]: Finished difference Result 1112 states and 1843 transitions. [2024-11-18 14:04:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:04:17,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2024-11-18 14:04:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:17,890 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 14:04:17,891 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 14:04:17,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:17,896 INFO L432 NwaCegarLoop]: 922 mSDtfsCounter, 4 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2762 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 [2024-11-18 14:04:17,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2762 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:17,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 14:04:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-18 14:04:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6809954751131222) internal successors, (743), 463 states have internal predecessors, (743), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 932 transitions. [2024-11-18 14:04:17,959 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 932 transitions. Word has length 65 [2024-11-18 14:04:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:17,959 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 932 transitions. [2024-11-18 14:04:17,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 932 transitions. [2024-11-18 14:04:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:04:17,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:17,966 INFO L215 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] [2024-11-18 14:04:17,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:04:17,967 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:17,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash 645158875, now seen corresponding path program 1 times [2024-11-18 14:04:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172006802] [2024-11-18 14:04:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172006802] [2024-11-18 14:04:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172006802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:18,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:18,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:04:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551973806] [2024-11-18 14:04:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:18,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:04:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:04:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:18,150 INFO L87 Difference]: Start difference. First operand 565 states and 932 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:18,219 INFO L93 Difference]: Finished difference Result 1112 states and 1842 transitions. [2024-11-18 14:04:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:04:18,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2024-11-18 14:04:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:18,226 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 14:04:18,227 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 14:04:18,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:18,231 INFO L432 NwaCegarLoop]: 922 mSDtfsCounter, 3 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2762 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 [2024-11-18 14:04:18,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2762 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 14:04:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-18 14:04:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6787330316742082) internal successors, (742), 463 states have internal predecessors, (742), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 931 transitions. [2024-11-18 14:04:18,269 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 931 transitions. Word has length 66 [2024-11-18 14:04:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:18,269 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 931 transitions. [2024-11-18 14:04:18,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 931 transitions. [2024-11-18 14:04:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 14:04:18,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:18,274 INFO L215 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] [2024-11-18 14:04:18,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:04:18,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:18,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2082562911, now seen corresponding path program 1 times [2024-11-18 14:04:18,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:18,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400815656] [2024-11-18 14:04:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:18,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:18,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:18,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400815656] [2024-11-18 14:04:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400815656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:18,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:04:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592861355] [2024-11-18 14:04:18,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:18,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:04:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:04:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:18,448 INFO L87 Difference]: Start difference. First operand 565 states and 931 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:18,506 INFO L93 Difference]: Finished difference Result 1112 states and 1841 transitions. [2024-11-18 14:04:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:04:18,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2024-11-18 14:04:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:18,514 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 14:04:18,515 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 14:04:18,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:18,521 INFO L432 NwaCegarLoop]: 922 mSDtfsCounter, 2 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2762 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 [2024-11-18 14:04:18,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2762 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 14:04:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-18 14:04:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 463 states have internal predecessors, (741), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 930 transitions. [2024-11-18 14:04:18,556 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 930 transitions. Word has length 67 [2024-11-18 14:04:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:18,557 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 930 transitions. [2024-11-18 14:04:18,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 930 transitions. [2024-11-18 14:04:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:04:18,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:18,561 INFO L215 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] [2024-11-18 14:04:18,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:04:18,563 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:18,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1960879593, now seen corresponding path program 1 times [2024-11-18 14:04:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:18,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119198917] [2024-11-18 14:04:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119198917] [2024-11-18 14:04:18,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119198917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:18,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:18,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:04:18,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519459534] [2024-11-18 14:04:18,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:18,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:04:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:18,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:04:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:18,723 INFO L87 Difference]: Start difference. First operand 565 states and 930 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:18,766 INFO L93 Difference]: Finished difference Result 1112 states and 1840 transitions. [2024-11-18 14:04:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:04:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-18 14:04:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:18,772 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 14:04:18,773 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 14:04:18,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:18,776 INFO L432 NwaCegarLoop]: 922 mSDtfsCounter, 1 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:18,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2762 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:18,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 14:04:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-18 14:04:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6742081447963801) internal successors, (740), 463 states have internal predecessors, (740), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 929 transitions. [2024-11-18 14:04:18,800 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 929 transitions. Word has length 68 [2024-11-18 14:04:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:18,801 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 929 transitions. [2024-11-18 14:04:18,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 929 transitions. [2024-11-18 14:04:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:04:18,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:18,802 INFO L215 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, 1] [2024-11-18 14:04:18,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:04:18,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:18,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash 593016029, now seen corresponding path program 1 times [2024-11-18 14:04:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414994132] [2024-11-18 14:04:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414994132] [2024-11-18 14:04:19,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414994132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:19,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:19,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 14:04:19,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346123488] [2024-11-18 14:04:19,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:19,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:04:19,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:04:19,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:04:19,056 INFO L87 Difference]: Start difference. First operand 565 states and 929 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:04:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:19,190 INFO L93 Difference]: Finished difference Result 1078 states and 1772 transitions. [2024-11-18 14:04:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:04:19,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2024-11-18 14:04:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:19,196 INFO L225 Difference]: With dead ends: 1078 [2024-11-18 14:04:19,197 INFO L226 Difference]: Without dead ends: 580 [2024-11-18 14:04:19,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:04:19,202 INFO L432 NwaCegarLoop]: 917 mSDtfsCounter, 91 mSDsluCounter, 6336 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7253 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 [2024-11-18 14:04:19,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7253 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:04:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-18 14:04:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 578. [2024-11-18 14:04:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 452 states have (on average 1.670353982300885) internal successors, (755), 475 states have internal predecessors, (755), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 90 states have call predecessors, (95), 93 states have call successors, (95) [2024-11-18 14:04:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 948 transitions. [2024-11-18 14:04:19,231 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 948 transitions. Word has length 69 [2024-11-18 14:04:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:19,232 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 948 transitions. [2024-11-18 14:04:19,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:04:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 948 transitions. [2024-11-18 14:04:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:04:19,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:19,235 INFO L215 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, 1] [2024-11-18 14:04:19,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:04:19,236 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:19,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1362186044, now seen corresponding path program 1 times [2024-11-18 14:04:19,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:19,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165865464] [2024-11-18 14:04:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:19,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165865464] [2024-11-18 14:04:19,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165865464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:19,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:19,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:04:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681580627] [2024-11-18 14:04:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:19,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:04:19,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:04:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:19,332 INFO L87 Difference]: Start difference. First operand 578 states and 948 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:19,373 INFO L93 Difference]: Finished difference Result 1130 states and 1866 transitions. [2024-11-18 14:04:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:04:19,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2024-11-18 14:04:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:19,378 INFO L225 Difference]: With dead ends: 1130 [2024-11-18 14:04:19,379 INFO L226 Difference]: Without dead ends: 559 [2024-11-18 14:04:19,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:04:19,384 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 0 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2764 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 [2024-11-18 14:04:19,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2764 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-18 14:04:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2024-11-18 14:04:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 436 states have (on average 1.665137614678899) internal successors, (726), 457 states have internal predecessors, (726), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 915 transitions. [2024-11-18 14:04:19,409 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 915 transitions. Word has length 69 [2024-11-18 14:04:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:19,411 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 915 transitions. [2024-11-18 14:04:19,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 915 transitions. [2024-11-18 14:04:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:04:19,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:19,414 INFO L215 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, 1, 1] [2024-11-18 14:04:19,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:04:19,414 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:19,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 977842114, now seen corresponding path program 1 times [2024-11-18 14:04:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922124428] [2024-11-18 14:04:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922124428] [2024-11-18 14:04:19,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922124428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:19,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:19,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:19,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448371405] [2024-11-18 14:04:19,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:19,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:19,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:19,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:19,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:19,576 INFO L87 Difference]: Start difference. First operand 559 states and 915 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:19,771 INFO L93 Difference]: Finished difference Result 1075 states and 1764 transitions. [2024-11-18 14:04:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2024-11-18 14:04:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:19,777 INFO L225 Difference]: With dead ends: 1075 [2024-11-18 14:04:19,777 INFO L226 Difference]: Without dead ends: 568 [2024-11-18 14:04:19,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:19,781 INFO L432 NwaCegarLoop]: 872 mSDtfsCounter, 55 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4331 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 [2024-11-18 14:04:19,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4331 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:04:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-18 14:04:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 559. [2024-11-18 14:04:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 436 states have (on average 1.6559633027522935) internal successors, (722), 457 states have internal predecessors, (722), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 911 transitions. [2024-11-18 14:04:19,802 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 911 transitions. Word has length 70 [2024-11-18 14:04:19,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:19,803 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 911 transitions. [2024-11-18 14:04:19,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 911 transitions. [2024-11-18 14:04:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 14:04:19,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:19,804 INFO L215 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, 1, 1, 1] [2024-11-18 14:04:19,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:04:19,805 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:19,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1816316256, now seen corresponding path program 1 times [2024-11-18 14:04:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:19,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355746302] [2024-11-18 14:04:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355746302] [2024-11-18 14:04:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355746302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:19,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571694568] [2024-11-18 14:04:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:19,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:19,965 INFO L87 Difference]: Start difference. First operand 559 states and 911 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:20,148 INFO L93 Difference]: Finished difference Result 1075 states and 1760 transitions. [2024-11-18 14:04:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:20,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-18 14:04:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:20,154 INFO L225 Difference]: With dead ends: 1075 [2024-11-18 14:04:20,155 INFO L226 Difference]: Without dead ends: 568 [2024-11-18 14:04:20,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:20,158 INFO L432 NwaCegarLoop]: 872 mSDtfsCounter, 54 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4331 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 [2024-11-18 14:04:20,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4331 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:04:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-18 14:04:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 559. [2024-11-18 14:04:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 436 states have (on average 1.646788990825688) internal successors, (718), 457 states have internal predecessors, (718), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2024-11-18 14:04:20,178 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 71 [2024-11-18 14:04:20,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:20,178 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2024-11-18 14:04:20,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2024-11-18 14:04:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 14:04:20,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:20,180 INFO L215 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, 1, 1, 1, 1] [2024-11-18 14:04:20,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:04:20,180 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:20,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:20,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2125443079, now seen corresponding path program 1 times [2024-11-18 14:04:20,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:20,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490435661] [2024-11-18 14:04:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:20,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:20,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490435661] [2024-11-18 14:04:20,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490435661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:20,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:20,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649756957] [2024-11-18 14:04:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:20,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:20,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:20,329 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:20,481 INFO L93 Difference]: Finished difference Result 1075 states and 1756 transitions. [2024-11-18 14:04:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-18 14:04:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:20,492 INFO L225 Difference]: With dead ends: 1075 [2024-11-18 14:04:20,492 INFO L226 Difference]: Without dead ends: 568 [2024-11-18 14:04:20,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:20,495 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 53 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4313 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 [2024-11-18 14:04:20,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4313 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:04:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-18 14:04:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 559. [2024-11-18 14:04:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 436 states have (on average 1.6376146788990826) internal successors, (714), 457 states have internal predecessors, (714), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 903 transitions. [2024-11-18 14:04:20,518 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 903 transitions. Word has length 72 [2024-11-18 14:04:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:20,521 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 903 transitions. [2024-11-18 14:04:20,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 903 transitions. [2024-11-18 14:04:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 14:04:20,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:20,523 INFO L215 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, 1, 1, 1, 1] [2024-11-18 14:04:20,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:04:20,524 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:20,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1947659399, now seen corresponding path program 1 times [2024-11-18 14:04:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584003345] [2024-11-18 14:04:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:20,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584003345] [2024-11-18 14:04:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584003345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:20,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:04:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498036132] [2024-11-18 14:04:20,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:20,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:04:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:04:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:20,661 INFO L87 Difference]: Start difference. First operand 559 states and 903 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:04:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:20,736 INFO L93 Difference]: Finished difference Result 1066 states and 1738 transitions. [2024-11-18 14:04:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:04:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2024-11-18 14:04:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:20,743 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 14:04:20,743 INFO L226 Difference]: Without dead ends: 538 [2024-11-18 14:04:20,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:04:20,746 INFO L432 NwaCegarLoop]: 892 mSDtfsCounter, 84 mSDsluCounter, 4387 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5279 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 [2024-11-18 14:04:20,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5279 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-18 14:04:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-18 14:04:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 415 states have (on average 1.6385542168674698) internal successors, (680), 436 states have internal predecessors, (680), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 869 transitions. [2024-11-18 14:04:20,784 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 869 transitions. Word has length 72 [2024-11-18 14:04:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:20,784 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 869 transitions. [2024-11-18 14:04:20,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:04:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 869 transitions. [2024-11-18 14:04:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 14:04:20,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:20,786 INFO L215 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, 1, 1, 1, 1, 1] [2024-11-18 14:04:20,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:04:20,786 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:20,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:20,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1090295099, now seen corresponding path program 1 times [2024-11-18 14:04:20,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:20,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759646961] [2024-11-18 14:04:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:20,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759646961] [2024-11-18 14:04:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759646961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:20,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:20,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290962273] [2024-11-18 14:04:20,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:20,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:20,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:20,947 INFO L87 Difference]: Start difference. First operand 538 states and 869 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:21,019 INFO L93 Difference]: Finished difference Result 1045 states and 1704 transitions. [2024-11-18 14:04:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-18 14:04:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:21,025 INFO L225 Difference]: With dead ends: 1045 [2024-11-18 14:04:21,025 INFO L226 Difference]: Without dead ends: 538 [2024-11-18 14:04:21,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:21,028 INFO L432 NwaCegarLoop]: 852 mSDtfsCounter, 17 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4251 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 [2024-11-18 14:04:21,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4251 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-18 14:04:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-18 14:04:21,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 415 states have (on average 1.636144578313253) internal successors, (679), 436 states have internal predecessors, (679), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 868 transitions. [2024-11-18 14:04:21,046 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 868 transitions. Word has length 73 [2024-11-18 14:04:21,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:21,047 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 868 transitions. [2024-11-18 14:04:21,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 868 transitions. [2024-11-18 14:04:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 14:04:21,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:21,048 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:21,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:04:21,049 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:21,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:21,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1907698612, now seen corresponding path program 1 times [2024-11-18 14:04:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:21,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115100348] [2024-11-18 14:04:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:21,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:21,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115100348] [2024-11-18 14:04:21,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115100348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:21,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:21,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744283205] [2024-11-18 14:04:21,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:21,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:21,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:21,171 INFO L87 Difference]: Start difference. First operand 538 states and 868 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:21,241 INFO L93 Difference]: Finished difference Result 1045 states and 1703 transitions. [2024-11-18 14:04:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:21,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-18 14:04:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:21,247 INFO L225 Difference]: With dead ends: 1045 [2024-11-18 14:04:21,247 INFO L226 Difference]: Without dead ends: 538 [2024-11-18 14:04:21,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:21,250 INFO L432 NwaCegarLoop]: 852 mSDtfsCounter, 16 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4251 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 [2024-11-18 14:04:21,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4251 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:21,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-18 14:04:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-18 14:04:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 415 states have (on average 1.6337349397590362) internal successors, (678), 436 states have internal predecessors, (678), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 867 transitions. [2024-11-18 14:04:21,268 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 867 transitions. Word has length 74 [2024-11-18 14:04:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:21,268 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 867 transitions. [2024-11-18 14:04:21,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:04:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 867 transitions. [2024-11-18 14:04:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:04:21,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:21,270 INFO L215 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:21,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:04:21,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:21,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1391171542, now seen corresponding path program 1 times [2024-11-18 14:04:21,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:21,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319720027] [2024-11-18 14:04:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:21,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:21,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319720027] [2024-11-18 14:04:21,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319720027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:21,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:21,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 14:04:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724683036] [2024-11-18 14:04:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:21,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:04:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:04:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:04:21,490 INFO L87 Difference]: Start difference. First operand 538 states and 867 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:04:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:21,589 INFO L93 Difference]: Finished difference Result 1039 states and 1691 transitions. [2024-11-18 14:04:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:04:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-18 14:04:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:21,595 INFO L225 Difference]: With dead ends: 1039 [2024-11-18 14:04:21,595 INFO L226 Difference]: Without dead ends: 538 [2024-11-18 14:04:21,597 INFO L431 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 [2024-11-18 14:04:21,598 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 6 mSDsluCounter, 6786 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7637 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 [2024-11-18 14:04:21,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7637 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:04:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-18 14:04:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-11-18 14:04:21,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 415 states have (on average 1.6313253012048192) internal successors, (677), 436 states have internal predecessors, (677), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 14:04:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 866 transitions. [2024-11-18 14:04:21,616 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 866 transitions. Word has length 75 [2024-11-18 14:04:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:21,616 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 866 transitions. [2024-11-18 14:04:21,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:04:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 866 transitions. [2024-11-18 14:04:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:04:21,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:21,618 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:21,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:04:21,618 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:21,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1280651935, now seen corresponding path program 1 times [2024-11-18 14:04:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764312505] [2024-11-18 14:04:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:04:21,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764312505] [2024-11-18 14:04:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764312505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:21,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454521545] [2024-11-18 14:04:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:21,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:21,813 INFO L87 Difference]: Start difference. First operand 538 states and 866 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-18 14:04:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:24,140 INFO L93 Difference]: Finished difference Result 1659 states and 2733 transitions. [2024-11-18 14:04:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:24,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 76 [2024-11-18 14:04:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:24,152 INFO L225 Difference]: With dead ends: 1659 [2024-11-18 14:04:24,152 INFO L226 Difference]: Without dead ends: 1166 [2024-11-18 14:04:24,171 INFO L431 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 [2024-11-18 14:04:24,173 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 1968 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:24,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1250 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 14:04:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2024-11-18 14:04:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1034. [2024-11-18 14:04:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 805 states have (on average 1.6521739130434783) internal successors, (1330), 835 states have internal predecessors, (1330), 181 states have call successors, (181), 46 states have call predecessors, (181), 47 states have return successors, (183), 165 states have call predecessors, (183), 176 states have call successors, (183) [2024-11-18 14:04:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1694 transitions. [2024-11-18 14:04:24,221 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1694 transitions. Word has length 76 [2024-11-18 14:04:24,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:24,222 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1694 transitions. [2024-11-18 14:04:24,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-18 14:04:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1694 transitions. [2024-11-18 14:04:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 14:04:24,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:24,226 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:24,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:04:24,226 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:24,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:24,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2074351956, now seen corresponding path program 1 times [2024-11-18 14:04:24,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:24,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731994662] [2024-11-18 14:04:24,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:24,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:04:24,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731994662] [2024-11-18 14:04:24,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731994662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:24,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:24,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 14:04:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682266763] [2024-11-18 14:04:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:24,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:04:24,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:04:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:04:24,555 INFO L87 Difference]: Start difference. First operand 1034 states and 1694 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 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) [2024-11-18 14:04:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:29,565 INFO L93 Difference]: Finished difference Result 3752 states and 6164 transitions. [2024-11-18 14:04:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 14:04:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 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 128 [2024-11-18 14:04:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:29,585 INFO L225 Difference]: With dead ends: 3752 [2024-11-18 14:04:29,586 INFO L226 Difference]: Without dead ends: 2763 [2024-11-18 14:04:29,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:04:29,594 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 2798 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 9584 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 10458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 9584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:29,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2873 Valid, 4214 Invalid, 10458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [874 Valid, 9584 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-18 14:04:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2024-11-18 14:04:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2667. [2024-11-18 14:04:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2014 states have (on average 1.6221449851042702) internal successors, (3267), 2090 states have internal predecessors, (3267), 524 states have call successors, (524), 111 states have call predecessors, (524), 128 states have return successors, (557), 498 states have call predecessors, (557), 519 states have call successors, (557) [2024-11-18 14:04:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4348 transitions. [2024-11-18 14:04:29,772 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4348 transitions. Word has length 128 [2024-11-18 14:04:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:29,773 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4348 transitions. [2024-11-18 14:04:29,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 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) [2024-11-18 14:04:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4348 transitions. [2024-11-18 14:04:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 14:04:29,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:29,778 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:04:29,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:04:29,778 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:29,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash 565151035, now seen corresponding path program 1 times [2024-11-18 14:04:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:29,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795249965] [2024-11-18 14:04:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:04:29,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:29,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795249965] [2024-11-18 14:04:29,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795249965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:29,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222238515] [2024-11-18 14:04:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:29,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:29,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:29,940 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) [2024-11-18 14:04:29,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:04:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:30,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:04:30,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:04:30,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222238515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:30,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:04:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584639232] [2024-11-18 14:04:30,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:30,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:04:30,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:04:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:30,343 INFO L87 Difference]: Start difference. First operand 2667 states and 4348 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-18 14:04:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:30,536 INFO L93 Difference]: Finished difference Result 6788 states and 11173 transitions. [2024-11-18 14:04:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:04:30,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 129 [2024-11-18 14:04:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:30,567 INFO L225 Difference]: With dead ends: 6788 [2024-11-18 14:04:30,567 INFO L226 Difference]: Without dead ends: 4166 [2024-11-18 14:04:30,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:30,583 INFO L432 NwaCegarLoop]: 985 mSDtfsCounter, 850 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:30,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1791 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2024-11-18 14:04:30,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 4164. [2024-11-18 14:04:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 3129 states have (on average 1.6174496644295302) internal successors, (5061), 3251 states have internal predecessors, (5061), 835 states have call successors, (835), 169 states have call predecessors, (835), 199 states have return successors, (934), 809 states have call predecessors, (934), 830 states have call successors, (934) [2024-11-18 14:04:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 6830 transitions. [2024-11-18 14:04:30,795 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 6830 transitions. Word has length 129 [2024-11-18 14:04:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:30,796 INFO L471 AbstractCegarLoop]: Abstraction has 4164 states and 6830 transitions. [2024-11-18 14:04:30,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-18 14:04:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 6830 transitions. [2024-11-18 14:04:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 14:04:30,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:30,800 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:04:30,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:04:31,001 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 [2024-11-18 14:04:31,002 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:31,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash 339535674, now seen corresponding path program 1 times [2024-11-18 14:04:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:31,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215891814] [2024-11-18 14:04:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:31,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:04:31,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:31,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215891814] [2024-11-18 14:04:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215891814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:31,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966530623] [2024-11-18 14:04:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:31,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:31,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:31,215 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) [2024-11-18 14:04:31,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:04:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:31,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:04:31,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:04:31,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:31,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966530623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:31,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:31,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:04:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662868351] [2024-11-18 14:04:31,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:31,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:04:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:04:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:31,636 INFO L87 Difference]: Start difference. First operand 4164 states and 6830 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (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) [2024-11-18 14:04:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:31,843 INFO L93 Difference]: Finished difference Result 11281 states and 18732 transitions. [2024-11-18 14:04:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:04:31,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (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 130 [2024-11-18 14:04:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:31,949 INFO L225 Difference]: With dead ends: 11281 [2024-11-18 14:04:31,949 INFO L226 Difference]: Without dead ends: 7162 [2024-11-18 14:04:31,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:31,975 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 849 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:31,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1747 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7162 states. [2024-11-18 14:04:32,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 7159. [2024-11-18 14:04:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7159 states, 5360 states have (on average 1.6134328358208956) internal successors, (8648), 5574 states have internal predecessors, (8648), 1457 states have call successors, (1457), 285 states have call predecessors, (1457), 341 states have return successors, (1756), 1431 states have call predecessors, (1756), 1452 states have call successors, (1756) [2024-11-18 14:04:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 11861 transitions. [2024-11-18 14:04:32,400 INFO L78 Accepts]: Start accepts. Automaton has 7159 states and 11861 transitions. Word has length 130 [2024-11-18 14:04:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:32,400 INFO L471 AbstractCegarLoop]: Abstraction has 7159 states and 11861 transitions. [2024-11-18 14:04:32,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (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) [2024-11-18 14:04:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7159 states and 11861 transitions. [2024-11-18 14:04:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 14:04:32,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:32,407 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:32,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:04:32,607 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 [2024-11-18 14:04:32,608 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:32,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1935397981, now seen corresponding path program 1 times [2024-11-18 14:04:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862042692] [2024-11-18 14:04:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:04:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:32,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862042692] [2024-11-18 14:04:32,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862042692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:32,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268378987] [2024-11-18 14:04:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:32,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:32,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:32,748 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) [2024-11-18 14:04:32,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:04:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:33,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:04:33,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:04:33,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:33,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268378987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:33,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:33,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:04:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041912917] [2024-11-18 14:04:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:33,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:04:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:04:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:33,145 INFO L87 Difference]: Start difference. First operand 7159 states and 11861 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-18 14:04:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:33,603 INFO L93 Difference]: Finished difference Result 20268 states and 34160 transitions. [2024-11-18 14:04:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:04:33,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 [2024-11-18 14:04:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:33,691 INFO L225 Difference]: With dead ends: 20268 [2024-11-18 14:04:33,691 INFO L226 Difference]: Without dead ends: 13154 [2024-11-18 14:04:33,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:33,722 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 848 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:33,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1739 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:33,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13154 states. [2024-11-18 14:04:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13154 to 13150. [2024-11-18 14:04:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13150 states, 9823 states have (on average 1.6096915402626488) internal successors, (15812), 10221 states have internal predecessors, (15812), 2701 states have call successors, (2701), 517 states have call predecessors, (2701), 625 states have return successors, (3610), 2675 states have call predecessors, (3610), 2696 states have call successors, (3610) [2024-11-18 14:04:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13150 states to 13150 states and 22123 transitions. [2024-11-18 14:04:34,655 INFO L78 Accepts]: Start accepts. Automaton has 13150 states and 22123 transitions. Word has length 131 [2024-11-18 14:04:34,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:34,656 INFO L471 AbstractCegarLoop]: Abstraction has 13150 states and 22123 transitions. [2024-11-18 14:04:34,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-18 14:04:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand 13150 states and 22123 transitions. [2024-11-18 14:04:34,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 14:04:34,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:34,664 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:04:34,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:04:34,864 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 [2024-11-18 14:04:34,865 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:34,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:34,865 INFO L85 PathProgramCache]: Analyzing trace with hash -132474148, now seen corresponding path program 1 times [2024-11-18 14:04:34,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:34,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71025460] [2024-11-18 14:04:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:34,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:04:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71025460] [2024-11-18 14:04:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71025460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195035984] [2024-11-18 14:04:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:35,016 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) [2024-11-18 14:04:35,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:04:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:35,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:04:35,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:04:35,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195035984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:35,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:35,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:04:35,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325982316] [2024-11-18 14:04:35,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:35,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:04:35,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:04:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:35,407 INFO L87 Difference]: Start difference. First operand 13150 states and 22123 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-11-18 14:04:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:36,233 INFO L93 Difference]: Finished difference Result 38243 states and 66033 transitions. [2024-11-18 14:04:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:04:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 132 [2024-11-18 14:04:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:36,410 INFO L225 Difference]: With dead ends: 38243 [2024-11-18 14:04:36,410 INFO L226 Difference]: Without dead ends: 25138 [2024-11-18 14:04:36,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:36,481 INFO L432 NwaCegarLoop]: 918 mSDtfsCounter, 847 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:36,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1733 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25138 states. [2024-11-18 14:04:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25138 to 25133. [2024-11-18 14:04:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25133 states, 18750 states have (on average 1.6059733333333333) internal successors, (30112), 19516 states have internal predecessors, (30112), 5189 states have call successors, (5189), 981 states have call predecessors, (5189), 1193 states have return successors, (8008), 5163 states have call predecessors, (8008), 5184 states have call successors, (8008) [2024-11-18 14:04:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25133 states to 25133 states and 43309 transitions. [2024-11-18 14:04:38,375 INFO L78 Accepts]: Start accepts. Automaton has 25133 states and 43309 transitions. Word has length 132 [2024-11-18 14:04:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:38,376 INFO L471 AbstractCegarLoop]: Abstraction has 25133 states and 43309 transitions. [2024-11-18 14:04:38,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-11-18 14:04:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 25133 states and 43309 transitions. [2024-11-18 14:04:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:04:38,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:38,382 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:04:38,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:04:38,582 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 [2024-11-18 14:04:38,584 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:38,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash 188003199, now seen corresponding path program 1 times [2024-11-18 14:04:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211794885] [2024-11-18 14:04:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:38,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:04:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211794885] [2024-11-18 14:04:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211794885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059857573] [2024-11-18 14:04:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:38,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:38,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:38,738 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) [2024-11-18 14:04:38,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:04:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:39,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:04:39,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:04:39,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059857573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:39,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:39,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:04:39,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699364901] [2024-11-18 14:04:39,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:39,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:04:39,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:04:39,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:39,166 INFO L87 Difference]: Start difference. First operand 25133 states and 43309 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-18 14:04:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:41,180 INFO L93 Difference]: Finished difference Result 74194 states and 133321 transitions. [2024-11-18 14:04:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:04:41,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 133 [2024-11-18 14:04:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:41,608 INFO L225 Difference]: With dead ends: 74194 [2024-11-18 14:04:41,609 INFO L226 Difference]: Without dead ends: 49098 [2024-11-18 14:04:41,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:04:41,739 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 846 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:41,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1743 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49098 states. [2024-11-18 14:04:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49098 to 49092. [2024-11-18 14:04:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49092 states, 36598 states have (on average 1.601699546423302) internal successors, (58619), 38100 states have internal predecessors, (58619), 10165 states have call successors, (10165), 1909 states have call predecessors, (10165), 2328 states have return successors, (19185), 10138 states have call predecessors, (19185), 10160 states have call successors, (19185) [2024-11-18 14:04:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49092 states to 49092 states and 87969 transitions. [2024-11-18 14:04:44,879 INFO L78 Accepts]: Start accepts. Automaton has 49092 states and 87969 transitions. Word has length 133 [2024-11-18 14:04:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:44,880 INFO L471 AbstractCegarLoop]: Abstraction has 49092 states and 87969 transitions. [2024-11-18 14:04:44,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-18 14:04:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 49092 states and 87969 transitions. [2024-11-18 14:04:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 14:04:44,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:44,907 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:44,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:04:45,111 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 [2024-11-18 14:04:45,113 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:45,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1737423671, now seen corresponding path program 1 times [2024-11-18 14:04:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715627731] [2024-11-18 14:04:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:45,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 14:04:45,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:45,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715627731] [2024-11-18 14:04:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715627731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:45,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:45,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012060990] [2024-11-18 14:04:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:45,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:45,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:45,576 INFO L87 Difference]: Start difference. First operand 49092 states and 87969 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:04:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:48,710 INFO L93 Difference]: Finished difference Result 98667 states and 186248 transitions. [2024-11-18 14:04:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:48,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 205 [2024-11-18 14:04:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:49,172 INFO L225 Difference]: With dead ends: 98667 [2024-11-18 14:04:49,172 INFO L226 Difference]: Without dead ends: 49620 [2024-11-18 14:04:49,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:04:49,591 INFO L432 NwaCegarLoop]: 848 mSDtfsCounter, 860 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:49,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 3171 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:04:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49620 states. [2024-11-18 14:04:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49620 to 49620. [2024-11-18 14:04:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49620 states, 36994 states have (on average 1.5952586905984754) internal successors, (59015), 38496 states have internal predecessors, (59015), 10165 states have call successors, (10165), 2041 states have call predecessors, (10165), 2460 states have return successors, (19284), 10138 states have call predecessors, (19284), 10160 states have call successors, (19284) [2024-11-18 14:04:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49620 states to 49620 states and 88464 transitions. [2024-11-18 14:04:52,822 INFO L78 Accepts]: Start accepts. Automaton has 49620 states and 88464 transitions. Word has length 205 [2024-11-18 14:04:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:52,825 INFO L471 AbstractCegarLoop]: Abstraction has 49620 states and 88464 transitions. [2024-11-18 14:04:52,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:04:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 49620 states and 88464 transitions. [2024-11-18 14:04:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 14:04:52,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:52,853 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:52,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:04:52,854 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:52,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash 626362369, now seen corresponding path program 1 times [2024-11-18 14:04:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:52,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262015890] [2024-11-18 14:04:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 14:04:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262015890] [2024-11-18 14:04:53,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262015890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:53,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:04:53,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:04:53,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187663831] [2024-11-18 14:04:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:53,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:04:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:04:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:04:53,025 INFO L87 Difference]: Start difference. First operand 49620 states and 88464 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:04:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:56,457 INFO L93 Difference]: Finished difference Result 99855 states and 187205 transitions. [2024-11-18 14:04:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:04:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 206 [2024-11-18 14:04:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:56,816 INFO L225 Difference]: With dead ends: 99855 [2024-11-18 14:04:56,816 INFO L226 Difference]: Without dead ends: 50280 [2024-11-18 14:04:57,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:04:57,059 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 859 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:57,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 3177 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:04:57,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50280 states. [2024-11-18 14:04:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50280 to 50280. [2024-11-18 14:04:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50280 states, 37522 states have (on average 1.5868823623474229) internal successors, (59543), 39024 states have internal predecessors, (59543), 10165 states have call successors, (10165), 2173 states have call predecessors, (10165), 2592 states have return successors, (19383), 10138 states have call predecessors, (19383), 10160 states have call successors, (19383) [2024-11-18 14:05:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50280 states to 50280 states and 89091 transitions. [2024-11-18 14:05:00,398 INFO L78 Accepts]: Start accepts. Automaton has 50280 states and 89091 transitions. Word has length 206 [2024-11-18 14:05:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:00,398 INFO L471 AbstractCegarLoop]: Abstraction has 50280 states and 89091 transitions. [2024-11-18 14:05:00,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:05:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 50280 states and 89091 transitions. [2024-11-18 14:05:00,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-18 14:05:00,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:00,425 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:00,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:05:00,425 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:00,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:00,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1661010381, now seen corresponding path program 1 times [2024-11-18 14:05:00,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:00,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858373387] [2024-11-18 14:05:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 14:05:00,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:00,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858373387] [2024-11-18 14:05:00,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858373387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:00,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:00,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:05:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144379853] [2024-11-18 14:05:00,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:00,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:05:00,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:05:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:05:00,612 INFO L87 Difference]: Start difference. First operand 50280 states and 89091 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:05:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:03,591 INFO L93 Difference]: Finished difference Result 101307 states and 188426 transitions. [2024-11-18 14:05:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:05:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 207 [2024-11-18 14:05:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:04,090 INFO L225 Difference]: With dead ends: 101307 [2024-11-18 14:05:04,090 INFO L226 Difference]: Without dead ends: 51072 [2024-11-18 14:05:04,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:04,672 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 859 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:04,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 3177 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:05:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51072 states. [2024-11-18 14:05:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51072 to 51072. [2024-11-18 14:05:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51072 states, 38182 states have (on average 1.5767377298203342) internal successors, (60203), 39684 states have internal predecessors, (60203), 10165 states have call successors, (10165), 2305 states have call predecessors, (10165), 2724 states have return successors, (19482), 10138 states have call predecessors, (19482), 10160 states have call successors, (19482) [2024-11-18 14:05:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51072 states to 51072 states and 89850 transitions. [2024-11-18 14:05:07,386 INFO L78 Accepts]: Start accepts. Automaton has 51072 states and 89850 transitions. Word has length 207 [2024-11-18 14:05:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:07,387 INFO L471 AbstractCegarLoop]: Abstraction has 51072 states and 89850 transitions. [2024-11-18 14:05:07,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:05:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand 51072 states and 89850 transitions. [2024-11-18 14:05:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 14:05:07,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:07,412 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:07,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:05:07,412 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:07,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash 147085189, now seen corresponding path program 1 times [2024-11-18 14:05:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011852926] [2024-11-18 14:05:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 14:05:07,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:07,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011852926] [2024-11-18 14:05:07,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011852926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:07,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:07,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:05:07,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169009783] [2024-11-18 14:05:07,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:07,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:05:07,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:05:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:05:07,642 INFO L87 Difference]: Start difference. First operand 51072 states and 89850 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:05:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:05:10,646 INFO L93 Difference]: Finished difference Result 103023 states and 189911 transitions. [2024-11-18 14:05:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:05:10,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 208 [2024-11-18 14:05:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:05:11,048 INFO L225 Difference]: With dead ends: 103023 [2024-11-18 14:05:11,048 INFO L226 Difference]: Without dead ends: 51996 [2024-11-18 14:05:11,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:05:11,732 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 859 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:05:11,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 3177 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:05:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51996 states. [2024-11-18 14:05:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51996 to 51996. [2024-11-18 14:05:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51996 states, 38974 states have (on average 1.5650177041104325) internal successors, (60995), 40476 states have internal predecessors, (60995), 10165 states have call successors, (10165), 2437 states have call predecessors, (10165), 2856 states have return successors, (19581), 10138 states have call predecessors, (19581), 10160 states have call successors, (19581) [2024-11-18 14:05:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51996 states to 51996 states and 90741 transitions. [2024-11-18 14:05:14,563 INFO L78 Accepts]: Start accepts. Automaton has 51996 states and 90741 transitions. Word has length 208 [2024-11-18 14:05:14,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:05:14,564 INFO L471 AbstractCegarLoop]: Abstraction has 51996 states and 90741 transitions. [2024-11-18 14:05:14,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-18 14:05:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 51996 states and 90741 transitions. [2024-11-18 14:05:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 14:05:14,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:05:14,578 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:05:14,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:05:14,578 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:05:14,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:05:14,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1424700498, now seen corresponding path program 1 times [2024-11-18 14:05:14,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:05:14,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186529499] [2024-11-18 14:05:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:05:14,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:05:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:05:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 14:05:14,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:05:14,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186529499] [2024-11-18 14:05:14,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186529499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:05:14,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:05:14,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:05:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88042558] [2024-11-18 14:05:14,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:05:14,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:05:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:05:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:05:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:05:14,746 INFO L87 Difference]: Start difference. First operand 51996 states and 90741 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26)