./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product22.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_spec2_product22.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 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:00:54,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:00:54,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:00:54,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:00:54,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:00:54,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:00:54,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:00:54,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:00:54,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:00:54,853 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:00:54,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:00:54,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:00:54,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:00:54,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:00:54,857 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:00:54,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:00:54,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:00:54,858 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:00:54,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:00:54,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:00:54,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:00:54,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:00:54,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:00:54,860 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:00:54,860 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:00:54,860 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:00:54,861 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:00:54,861 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:00:54,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:00:54,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:00:54,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:00:54,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:00:54,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:00:54,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:00:54,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:00:54,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:00:54,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:00:54,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:00:54,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:00:54,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:00:54,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:00:54,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:00:54,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a [2024-11-18 14:00:55,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:00:55,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:00:55,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:00:55,103 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:00:55,103 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:00:55,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2024-11-18 14:00:56,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:00:56,826 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:00:56,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2024-11-18 14:00:56,848 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14cb2526d/d87f4a6b7c914d0d8ee93c74ee089d73/FLAGaa74b91ac [2024-11-18 14:00:56,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14cb2526d/d87f4a6b7c914d0d8ee93c74ee089d73 [2024-11-18 14:00:56,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:00:56,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:00:56,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:00:56,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:00:56,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:00:56,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:00:56" (1/1) ... [2024-11-18 14:00:56,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef022d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:56, skipping insertion in model container [2024-11-18 14:00:56,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:00:56" (1/1) ... [2024-11-18 14:00:56,979 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:00:57,138 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c[1545,1558] [2024-11-18 14:00:57,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:00:57,441 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:00:57,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-18 14:00:57,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [57] [2024-11-18 14:00:57,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [421] [2024-11-18 14:00:57,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1088] [2024-11-18 14:00:57,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1454] [2024-11-18 14:00:57,452 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1466] [2024-11-18 14:00:57,452 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1586] [2024-11-18 14:00:57,452 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1621] [2024-11-18 14:00:57,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3188] [2024-11-18 14:00:57,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3279] [2024-11-18 14:00:57,457 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c[1545,1558] [2024-11-18 14:00:57,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:00:57,577 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:00:57,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57 WrapperNode [2024-11-18 14:00:57,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:00:57,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:00:57,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:00:57,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:00:57,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,646 INFO L138 Inliner]: procedures = 94, calls = 345, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 875 [2024-11-18 14:00:57,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:00:57,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:00:57,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:00:57,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:00:57,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,728 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 14:00:57,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:00:57,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:00:57,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:00:57,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:00:57,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (1/1) ... [2024-11-18 14:00:57,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:00:57,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:57,859 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 14:00:57,869 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 14:00:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:00:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:00:57,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:00:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-18 14:00:57,913 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-18 14:00:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:00:57,913 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:00:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:00:57,913 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:00:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:00:57,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:00:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:00:57,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:00:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:00:57,914 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:00:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-18 14:00:57,914 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-18 14:00:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:00:57,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:00:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:00:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:00:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:00:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:00:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:00:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:00:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 14:00:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 14:00:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:00:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:00:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:00:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:00:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:00:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:00:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:00:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:00:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:00:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:00:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:00:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:00:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 14:00:57,921 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 14:00:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:00:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:00:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:00:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:00:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:00:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:00:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-18 14:00:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-18 14:00:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-18 14:00:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-18 14:00:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:00:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:00:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:00:57,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:00:58,065 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:00:58,067 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:00:59,196 INFO L? ?]: Removed 450 outVars from TransFormulas that were not future-live. [2024-11-18 14:00:59,196 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:00:59,228 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:00:59,228 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:00:59,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:00:59 BoogieIcfgContainer [2024-11-18 14:00:59,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:00:59,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:00:59,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:00:59,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:00:59,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:00:56" (1/3) ... [2024-11-18 14:00:59,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dbea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:00:59, skipping insertion in model container [2024-11-18 14:00:59,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:57" (2/3) ... [2024-11-18 14:00:59,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dbea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:00:59, skipping insertion in model container [2024-11-18 14:00:59,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:00:59" (3/3) ... [2024-11-18 14:00:59,243 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2024-11-18 14:00:59,262 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:00:59,263 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:00:59,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:00:59,328 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;@66c453b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:00:59,329 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:00:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-18 14:00:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:00:59,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:59,348 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] [2024-11-18 14:00:59,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:59,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -992084887, now seen corresponding path program 1 times [2024-11-18 14:00:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:59,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399141304] [2024-11-18 14:00:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:59,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:59,746 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 14:00:59,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:59,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399141304] [2024-11-18 14:00:59,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399141304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:59,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:00:59,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:00:59,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604194054] [2024-11-18 14:00:59,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:59,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:00:59,809 INFO L87 Difference]: Start difference. First operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:00:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:59,976 INFO L93 Difference]: Finished difference Result 1124 states and 1879 transitions. [2024-11-18 14:00:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-11-18 14:00:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:00,001 INFO L225 Difference]: With dead ends: 1124 [2024-11-18 14:01:00,002 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:00,016 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 14:01:00,023 INFO L432 NwaCegarLoop]: 931 mSDtfsCounter, 5 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2789 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 14:01:00,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2789 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-11-18 14:01:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 462 states have internal predecessors, (744), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 935 transitions. [2024-11-18 14:01:00,099 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 935 transitions. Word has length 60 [2024-11-18 14:01:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:00,100 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 935 transitions. [2024-11-18 14:01:00,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 935 transitions. [2024-11-18 14:01:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 14:01:00,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:00,104 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] [2024-11-18 14:01:00,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:01:00,104 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:00,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1651182718, now seen corresponding path program 1 times [2024-11-18 14:01:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:00,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777789108] [2024-11-18 14:01:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:00,243 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 14:01:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777789108] [2024-11-18 14:01:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777789108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929626895] [2024-11-18 14:01:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:00,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:00,246 INFO L87 Difference]: Start difference. First operand 564 states and 935 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:00,303 INFO L93 Difference]: Finished difference Result 1110 states and 1847 transitions. [2024-11-18 14:01:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:00,304 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-18 14:01:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:00,308 INFO L225 Difference]: With dead ends: 1110 [2024-11-18 14:01:00,308 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:00,310 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 14:01:00,311 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 4 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2768 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 14:01:00,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2768 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-11-18 14:01:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 934 transitions. [2024-11-18 14:01:00,341 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 934 transitions. Word has length 63 [2024-11-18 14:01:00,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:00,341 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 934 transitions. [2024-11-18 14:01:00,341 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 934 transitions. [2024-11-18 14:01:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 14:01:00,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:00,343 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] [2024-11-18 14:01:00,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:01:00,344 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:00,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash 722898553, now seen corresponding path program 1 times [2024-11-18 14:01:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:00,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208495285] [2024-11-18 14:01:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:00,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:00,528 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 14:01:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:00,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208495285] [2024-11-18 14:01:00,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208495285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:00,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:00,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:00,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236718677] [2024-11-18 14:01:00,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:00,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:00,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:00,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:00,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:00,530 INFO L87 Difference]: Start difference. First operand 564 states and 934 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:00,590 INFO L93 Difference]: Finished difference Result 1110 states and 1846 transitions. [2024-11-18 14:01:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:00,591 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-18 14:01:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:00,597 INFO L225 Difference]: With dead ends: 1110 [2024-11-18 14:01:00,598 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:00,600 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 14:01:00,601 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 3 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2768 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 14:01:00,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2768 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-11-18 14:01:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 462 states have internal predecessors, (742), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 933 transitions. [2024-11-18 14:01:00,632 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 933 transitions. Word has length 64 [2024-11-18 14:01:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:00,632 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 933 transitions. [2024-11-18 14:01:00,632 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 933 transitions. [2024-11-18 14:01:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 14:01:00,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:00,636 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 14:01:00,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:01:00,637 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:00,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash 342813406, now seen corresponding path program 1 times [2024-11-18 14:01:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:00,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843219289] [2024-11-18 14:01:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:00,762 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 14:01:00,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:00,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843219289] [2024-11-18 14:01:00,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843219289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:00,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:00,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:00,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47089282] [2024-11-18 14:01:00,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:00,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:00,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:00,765 INFO L87 Difference]: Start difference. First operand 564 states and 933 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:00,804 INFO L93 Difference]: Finished difference Result 1110 states and 1845 transitions. [2024-11-18 14:01:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:00,804 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-18 14:01:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:00,808 INFO L225 Difference]: With dead ends: 1110 [2024-11-18 14:01:00,808 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:00,810 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 14:01:00,811 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 2 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2768 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 14:01:00,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2768 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-11-18 14:01:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 462 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 932 transitions. [2024-11-18 14:01:00,835 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 932 transitions. Word has length 65 [2024-11-18 14:01:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:00,836 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 932 transitions. [2024-11-18 14:01:00,837 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 932 transitions. [2024-11-18 14:01:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:01:00,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:00,838 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 14:01:00,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:01:00,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:00,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 482915221, now seen corresponding path program 1 times [2024-11-18 14:01:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014519914] [2024-11-18 14:01:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:00,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:00,958 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 14:01:00,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:00,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014519914] [2024-11-18 14:01:00,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014519914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:00,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:00,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:00,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376550991] [2024-11-18 14:01:00,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:00,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:00,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:00,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:00,962 INFO L87 Difference]: Start difference. First operand 564 states and 932 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:00,995 INFO L93 Difference]: Finished difference Result 1110 states and 1844 transitions. [2024-11-18 14:01:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:00,996 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-18 14:01:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:00,999 INFO L225 Difference]: With dead ends: 1110 [2024-11-18 14:01:00,999 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:01,001 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 14:01:01,003 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 1 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2768 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 14:01:01,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2768 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-11-18 14:01:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 462 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 931 transitions. [2024-11-18 14:01:01,027 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 931 transitions. Word has length 66 [2024-11-18 14:01:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:01,028 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 931 transitions. [2024-11-18 14:01:01,028 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 931 transitions. [2024-11-18 14:01:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 14:01:01,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:01,029 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 14:01:01,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:01:01,030 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:01,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash -431056326, now seen corresponding path program 1 times [2024-11-18 14:01:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979676640] [2024-11-18 14:01:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:01,197 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 14:01:01,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979676640] [2024-11-18 14:01:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979676640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:01,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:01,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:01,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90861390] [2024-11-18 14:01:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:01,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:01,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:01,199 INFO L87 Difference]: Start difference. First operand 564 states and 931 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:01:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:01,287 INFO L93 Difference]: Finished difference Result 1076 states and 1776 transitions. [2024-11-18 14:01:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:01,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2024-11-18 14:01:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:01,293 INFO L225 Difference]: With dead ends: 1076 [2024-11-18 14:01:01,293 INFO L226 Difference]: Without dead ends: 579 [2024-11-18 14:01:01,295 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 14:01:01,296 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 91 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5445 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:01,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5445 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-18 14:01:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2024-11-18 14:01:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 474 states have internal predecessors, (755), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2024-11-18 14:01:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 950 transitions. [2024-11-18 14:01:01,324 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 950 transitions. Word has length 67 [2024-11-18 14:01:01,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:01,325 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 950 transitions. [2024-11-18 14:01:01,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:01:01,325 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 950 transitions. [2024-11-18 14:01:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 14:01:01,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:01,328 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 14:01:01,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:01:01,328 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:01,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -671596455, now seen corresponding path program 1 times [2024-11-18 14:01:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814057082] [2024-11-18 14:01:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:01,423 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 14:01:01,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:01,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814057082] [2024-11-18 14:01:01,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814057082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:01,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:01,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687116407] [2024-11-18 14:01:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:01,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:01,425 INFO L87 Difference]: Start difference. First operand 577 states and 950 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:01,466 INFO L93 Difference]: Finished difference Result 1128 states and 1870 transitions. [2024-11-18 14:01:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:01,467 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-18 14:01:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:01,471 INFO L225 Difference]: With dead ends: 1128 [2024-11-18 14:01:01,471 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:01:01,474 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 14:01:01,475 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 0 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2770 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 14:01:01,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2770 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:01:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:01:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6689655172413793) internal successors, (726), 456 states have internal predecessors, (726), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 917 transitions. [2024-11-18 14:01:01,499 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 917 transitions. Word has length 67 [2024-11-18 14:01:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:01,499 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 917 transitions. [2024-11-18 14:01:01,500 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 917 transitions. [2024-11-18 14:01:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:01:01,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:01,506 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 14:01:01,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:01:01,507 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:01,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:01,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1309342962, now seen corresponding path program 1 times [2024-11-18 14:01:01,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:01,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771808052] [2024-11-18 14:01:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:01,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:01,629 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 14:01:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771808052] [2024-11-18 14:01:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771808052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:01,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:01,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653560326] [2024-11-18 14:01:01,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:01,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:01,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:01,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:01,632 INFO L87 Difference]: Start difference. First operand 558 states and 917 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:01,828 INFO L93 Difference]: Finished difference Result 1073 states and 1768 transitions. [2024-11-18 14:01:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:01,829 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-18 14:01:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:01,834 INFO L225 Difference]: With dead ends: 1073 [2024-11-18 14:01:01,834 INFO L226 Difference]: Without dead ends: 567 [2024-11-18 14:01:01,836 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 14:01:01,837 INFO L432 NwaCegarLoop]: 874 mSDtfsCounter, 55 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:01,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4341 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:01:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-18 14:01:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 558. [2024-11-18 14:01:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6597701149425288) internal successors, (722), 456 states have internal predecessors, (722), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 913 transitions. [2024-11-18 14:01:01,853 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 913 transitions. Word has length 68 [2024-11-18 14:01:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:01,853 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 913 transitions. [2024-11-18 14:01:01,853 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 913 transitions. [2024-11-18 14:01:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:01:01,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:01,855 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 14:01:01,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:01:01,855 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:01,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1275660637, now seen corresponding path program 1 times [2024-11-18 14:01:01,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:01,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715813153] [2024-11-18 14:01:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:01,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:01,990 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 14:01:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715813153] [2024-11-18 14:01:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715813153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520844257] [2024-11-18 14:01:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:01,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:01,993 INFO L87 Difference]: Start difference. First operand 558 states and 913 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:02,136 INFO L93 Difference]: Finished difference Result 1073 states and 1764 transitions. [2024-11-18 14:01:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:02,137 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-18 14:01:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:02,142 INFO L225 Difference]: With dead ends: 1073 [2024-11-18 14:01:02,142 INFO L226 Difference]: Without dead ends: 567 [2024-11-18 14:01:02,144 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 14:01:02,145 INFO L432 NwaCegarLoop]: 874 mSDtfsCounter, 54 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4341 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 14:01:02,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4341 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-18 14:01:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 558. [2024-11-18 14:01:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.650574712643678) internal successors, (718), 456 states have internal predecessors, (718), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 909 transitions. [2024-11-18 14:01:02,160 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 909 transitions. Word has length 69 [2024-11-18 14:01:02,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:02,161 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 909 transitions. [2024-11-18 14:01:02,161 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 909 transitions. [2024-11-18 14:01:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:01:02,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:02,163 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 14:01:02,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:01:02,163 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:02,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1857877683, now seen corresponding path program 1 times [2024-11-18 14:01:02,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302100551] [2024-11-18 14:01:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:02,272 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 14:01:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302100551] [2024-11-18 14:01:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302100551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130162289] [2024-11-18 14:01:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:02,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:02,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:02,274 INFO L87 Difference]: Start difference. First operand 558 states and 909 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:02,406 INFO L93 Difference]: Finished difference Result 1073 states and 1760 transitions. [2024-11-18 14:01:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:02,407 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-18 14:01:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:02,411 INFO L225 Difference]: With dead ends: 1073 [2024-11-18 14:01:02,411 INFO L226 Difference]: Without dead ends: 567 [2024-11-18 14:01:02,413 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 14:01:02,413 INFO L432 NwaCegarLoop]: 873 mSDtfsCounter, 53 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4323 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 14:01:02,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4323 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-18 14:01:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 558. [2024-11-18 14:01:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6413793103448275) internal successors, (714), 456 states have internal predecessors, (714), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 905 transitions. [2024-11-18 14:01:02,431 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 905 transitions. Word has length 70 [2024-11-18 14:01:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:02,431 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 905 transitions. [2024-11-18 14:01:02,432 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 905 transitions. [2024-11-18 14:01:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:01:02,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:02,433 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 14:01:02,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:01:02,433 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:02,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash -171355341, now seen corresponding path program 1 times [2024-11-18 14:01:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:02,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620746221] [2024-11-18 14:01:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:02,549 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 14:01:02,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:02,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620746221] [2024-11-18 14:01:02,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620746221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:02,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:02,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:02,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227946704] [2024-11-18 14:01:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:02,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:02,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:02,551 INFO L87 Difference]: Start difference. First operand 558 states and 905 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:01:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:02,603 INFO L93 Difference]: Finished difference Result 1064 states and 1742 transitions. [2024-11-18 14:01:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:02,604 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2024-11-18 14:01:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:02,608 INFO L225 Difference]: With dead ends: 1064 [2024-11-18 14:01:02,608 INFO L226 Difference]: Without dead ends: 537 [2024-11-18 14:01:02,610 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 14:01:02,611 INFO L432 NwaCegarLoop]: 894 mSDtfsCounter, 84 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5291 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 14:01:02,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5291 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-18 14:01:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-11-18 14:01:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.642512077294686) internal successors, (680), 435 states have internal predecessors, (680), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 871 transitions. [2024-11-18 14:01:02,628 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 871 transitions. Word has length 70 [2024-11-18 14:01:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:02,628 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 871 transitions. [2024-11-18 14:01:02,628 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:01:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 871 transitions. [2024-11-18 14:01:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 14:01:02,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:02,629 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 14:01:02,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:01:02,630 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash 483253730, now seen corresponding path program 1 times [2024-11-18 14:01:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:02,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296250651] [2024-11-18 14:01:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:02,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:02,810 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 14:01:02,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:02,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296250651] [2024-11-18 14:01:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296250651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:02,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:02,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101339581] [2024-11-18 14:01:02,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:02,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:02,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:02,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:02,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:02,812 INFO L87 Difference]: Start difference. First operand 537 states and 871 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:02,902 INFO L93 Difference]: Finished difference Result 1043 states and 1708 transitions. [2024-11-18 14:01:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:02,903 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-18 14:01:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:02,907 INFO L225 Difference]: With dead ends: 1043 [2024-11-18 14:01:02,907 INFO L226 Difference]: Without dead ends: 537 [2024-11-18 14:01:02,909 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 14:01:02,909 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 17 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:02,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4261 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-18 14:01:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-11-18 14:01:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6400966183574879) internal successors, (679), 435 states have internal predecessors, (679), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 870 transitions. [2024-11-18 14:01:02,923 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 870 transitions. Word has length 71 [2024-11-18 14:01:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:02,923 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 870 transitions. [2024-11-18 14:01:02,924 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 870 transitions. [2024-11-18 14:01:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 14:01:02,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:02,925 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 14:01:02,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:01:02,925 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:02,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1423899048, now seen corresponding path program 1 times [2024-11-18 14:01:02,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495972192] [2024-11-18 14:01:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:02,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:03,032 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 14:01:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:03,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495972192] [2024-11-18 14:01:03,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495972192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:03,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:03,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:03,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643103637] [2024-11-18 14:01:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:03,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:03,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:03,034 INFO L87 Difference]: Start difference. First operand 537 states and 870 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:03,115 INFO L93 Difference]: Finished difference Result 1043 states and 1707 transitions. [2024-11-18 14:01:03,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:03,115 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-18 14:01:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:03,119 INFO L225 Difference]: With dead ends: 1043 [2024-11-18 14:01:03,119 INFO L226 Difference]: Without dead ends: 537 [2024-11-18 14:01:03,121 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 14:01:03,121 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 16 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:03,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4261 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-18 14:01:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-11-18 14:01:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6376811594202898) internal successors, (678), 435 states have internal predecessors, (678), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 869 transitions. [2024-11-18 14:01:03,136 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 869 transitions. Word has length 72 [2024-11-18 14:01:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:03,136 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 869 transitions. [2024-11-18 14:01:03,136 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 869 transitions. [2024-11-18 14:01:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 14:01:03,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:03,138 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 14:01:03,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:01:03,138 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:03,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1635391079, now seen corresponding path program 1 times [2024-11-18 14:01:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489743271] [2024-11-18 14:01:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:03,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:03,208 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 14:01:03,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489743271] [2024-11-18 14:01:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489743271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:03,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:03,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385915521] [2024-11-18 14:01:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:03,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:03,210 INFO L87 Difference]: Start difference. First operand 537 states and 869 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:03,253 INFO L93 Difference]: Finished difference Result 1037 states and 1695 transitions. [2024-11-18 14:01:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-18 14:01:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:03,257 INFO L225 Difference]: With dead ends: 1037 [2024-11-18 14:01:03,257 INFO L226 Difference]: Without dead ends: 537 [2024-11-18 14:01:03,259 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 14:01:03,260 INFO L432 NwaCegarLoop]: 857 mSDtfsCounter, 5 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:03,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2561 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-18 14:01:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-11-18 14:01:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6352657004830917) internal successors, (677), 435 states have internal predecessors, (677), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-18 14:01:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 868 transitions. [2024-11-18 14:01:03,274 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 868 transitions. Word has length 73 [2024-11-18 14:01:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:03,274 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 868 transitions. [2024-11-18 14:01:03,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:01:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 868 transitions. [2024-11-18 14:01:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 14:01:03,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:03,276 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 14:01:03,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:01:03,276 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:03,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash -789981491, now seen corresponding path program 1 times [2024-11-18 14:01:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090644683] [2024-11-18 14:01:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:03,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:03,448 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 14:01:03,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090644683] [2024-11-18 14:01:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090644683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:03,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557407647] [2024-11-18 14:01:03,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:03,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:03,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:03,450 INFO L87 Difference]: Start difference. First operand 537 states and 868 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, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-18 14:01:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:05,582 INFO L93 Difference]: Finished difference Result 1669 states and 2761 transitions. [2024-11-18 14:01:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:05,583 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, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 74 [2024-11-18 14:01:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:05,592 INFO L225 Difference]: With dead ends: 1669 [2024-11-18 14:01:05,593 INFO L226 Difference]: Without dead ends: 1177 [2024-11-18 14:01:05,596 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 14:01:05,597 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 3271 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:05,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3338 Valid, 993 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 14:01:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-18 14:01:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1055. [2024-11-18 14:01:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 820 states have (on average 1.6560975609756097) internal successors, (1358), 850 states have internal predecessors, (1358), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2024-11-18 14:01:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1740 transitions. [2024-11-18 14:01:05,656 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1740 transitions. Word has length 74 [2024-11-18 14:01:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:05,657 INFO L471 AbstractCegarLoop]: Abstraction has 1055 states and 1740 transitions. [2024-11-18 14:01:05,657 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, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-18 14:01:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1740 transitions. [2024-11-18 14:01:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:01:05,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:05,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:05,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:01:05,662 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:05,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash -682590781, now seen corresponding path program 1 times [2024-11-18 14:01:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924685532] [2024-11-18 14:01:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:05,993 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 14:01:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924685532] [2024-11-18 14:01:05,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924685532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:05,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:05,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:01:05,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425805125] [2024-11-18 14:01:05,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:05,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:01:05,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:05,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:01:05,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:01:05,997 INFO L87 Difference]: Start difference. First operand 1055 states and 1740 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:01:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:07,447 INFO L93 Difference]: Finished difference Result 2073 states and 3482 transitions. [2024-11-18 14:01:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:01:07,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2024-11-18 14:01:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:07,455 INFO L225 Difference]: With dead ends: 2073 [2024-11-18 14:01:07,455 INFO L226 Difference]: Without dead ends: 1063 [2024-11-18 14:01:07,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:01:07,461 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 1315 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:07,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1611 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 14:01:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-18 14:01:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1063. [2024-11-18 14:01:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 826 states have (on average 1.6513317191283292) internal successors, (1364), 856 states have internal predecessors, (1364), 190 states have call successors, (190), 43 states have call predecessors, (190), 46 states have return successors, (224), 176 states have call predecessors, (224), 185 states have call successors, (224) [2024-11-18 14:01:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1778 transitions. [2024-11-18 14:01:07,522 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1778 transitions. Word has length 113 [2024-11-18 14:01:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:07,522 INFO L471 AbstractCegarLoop]: Abstraction has 1063 states and 1778 transitions. [2024-11-18 14:01:07,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:01:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1778 transitions. [2024-11-18 14:01:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:01:07,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:07,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:07,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:01:07,527 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:07,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:07,528 INFO L85 PathProgramCache]: Analyzing trace with hash 851730414, now seen corresponding path program 1 times [2024-11-18 14:01:07,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:07,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884539351] [2024-11-18 14:01:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:07,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:07,881 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 14:01:07,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:07,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884539351] [2024-11-18 14:01:07,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884539351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 14:01:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651360869] [2024-11-18 14:01:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:07,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:01:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:01:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:01:07,883 INFO L87 Difference]: Start difference. First operand 1063 states and 1778 transitions. Second operand has 14 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-18 14:01:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:13,248 INFO L93 Difference]: Finished difference Result 3896 states and 6555 transitions. [2024-11-18 14:01:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:01:13,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 113 [2024-11-18 14:01:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:13,269 INFO L225 Difference]: With dead ends: 3896 [2024-11-18 14:01:13,269 INFO L226 Difference]: Without dead ends: 2878 [2024-11-18 14:01:13,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:01:13,276 INFO L432 NwaCegarLoop]: 763 mSDtfsCounter, 2831 mSDsluCounter, 6444 mSDsCounter, 0 mSdLazyCounter, 12747 mSolverCounterSat, 886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2909 SdHoareTripleChecker+Valid, 7207 SdHoareTripleChecker+Invalid, 13633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 12747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:13,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2909 Valid, 7207 Invalid, 13633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [886 Valid, 12747 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-18 14:01:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2024-11-18 14:01:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2778. [2024-11-18 14:01:13,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2089 states have (on average 1.6189564384873145) internal successors, (3382), 2165 states have internal predecessors, (3382), 566 states have call successors, (566), 99 states have call predecessors, (566), 122 states have return successors, (665), 546 states have call predecessors, (665), 561 states have call successors, (665) [2024-11-18 14:01:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4613 transitions. [2024-11-18 14:01:13,462 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4613 transitions. Word has length 113 [2024-11-18 14:01:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:13,464 INFO L471 AbstractCegarLoop]: Abstraction has 2778 states and 4613 transitions. [2024-11-18 14:01:13,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-18 14:01:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4613 transitions. [2024-11-18 14:01:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 14:01:13,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:13,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:13,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:01:13,468 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:13,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1646081839, now seen corresponding path program 1 times [2024-11-18 14:01:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384506592] [2024-11-18 14:01:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:13,671 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 14:01:13,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384506592] [2024-11-18 14:01:13,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384506592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:13,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:13,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:13,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981494317] [2024-11-18 14:01:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:13,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:13,674 INFO L87 Difference]: Start difference. First operand 2778 states and 4613 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:01:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:16,255 INFO L93 Difference]: Finished difference Result 8911 states and 15178 transitions. [2024-11-18 14:01:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:01:16,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2024-11-18 14:01:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:16,286 INFO L225 Difference]: With dead ends: 8911 [2024-11-18 14:01:16,287 INFO L226 Difference]: Without dead ends: 6178 [2024-11-18 14:01:16,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:01:16,302 INFO L432 NwaCegarLoop]: 617 mSDtfsCounter, 2761 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 4514 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2841 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 5258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 4514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:16,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2841 Valid, 2538 Invalid, 5258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 4514 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 14:01:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6178 states. [2024-11-18 14:01:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6178 to 5943. [2024-11-18 14:01:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5943 states, 4469 states have (on average 1.6102036249720295) internal successors, (7196), 4650 states have internal predecessors, (7196), 1204 states have call successors, (1204), 237 states have call predecessors, (1204), 269 states have return successors, (1389), 1132 states have call predecessors, (1389), 1199 states have call successors, (1389) [2024-11-18 14:01:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5943 states to 5943 states and 9789 transitions. [2024-11-18 14:01:16,541 INFO L78 Accepts]: Start accepts. Automaton has 5943 states and 9789 transitions. Word has length 114 [2024-11-18 14:01:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:16,543 INFO L471 AbstractCegarLoop]: Abstraction has 5943 states and 9789 transitions. [2024-11-18 14:01:16,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:01:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5943 states and 9789 transitions. [2024-11-18 14:01:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:01:16,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:16,546 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:16,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:01:16,547 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:16,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash 668323327, now seen corresponding path program 1 times [2024-11-18 14:01:16,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:16,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648187739] [2024-11-18 14:01:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:16,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:01:16,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:16,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648187739] [2024-11-18 14:01:16,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648187739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:16,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:16,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:16,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994461206] [2024-11-18 14:01:16,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:16,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:16,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:16,722 INFO L87 Difference]: Start difference. First operand 5943 states and 9789 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:01:19,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:19,631 INFO L93 Difference]: Finished difference Result 16893 states and 28293 transitions. [2024-11-18 14:01:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:19,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 116 [2024-11-18 14:01:19,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:19,702 INFO L225 Difference]: With dead ends: 16893 [2024-11-18 14:01:19,702 INFO L226 Difference]: Without dead ends: 10991 [2024-11-18 14:01:19,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:19,722 INFO L432 NwaCegarLoop]: 728 mSDtfsCounter, 3264 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 4198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:19,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3300 Valid, 1835 Invalid, 4198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [882 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 14:01:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10991 states. [2024-11-18 14:01:20,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10991 to 9492. [2024-11-18 14:01:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9492 states, 6992 states have (on average 1.596395881006865) internal successors, (11162), 7330 states have internal predecessors, (11162), 2070 states have call successors, (2070), 360 states have call predecessors, (2070), 429 states have return successors, (2408), 1997 states have call predecessors, (2408), 2065 states have call successors, (2408) [2024-11-18 14:01:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9492 states to 9492 states and 15640 transitions. [2024-11-18 14:01:20,266 INFO L78 Accepts]: Start accepts. Automaton has 9492 states and 15640 transitions. Word has length 116 [2024-11-18 14:01:20,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:20,267 INFO L471 AbstractCegarLoop]: Abstraction has 9492 states and 15640 transitions. [2024-11-18 14:01:20,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:01:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9492 states and 15640 transitions. [2024-11-18 14:01:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-18 14:01:20,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:20,270 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:20,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:01:20,270 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:20,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash 577130711, now seen corresponding path program 1 times [2024-11-18 14:01:20,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:20,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581738040] [2024-11-18 14:01:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:01:20,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:20,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581738040] [2024-11-18 14:01:20,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581738040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:20,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:20,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:20,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617178764] [2024-11-18 14:01:20,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:20,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:20,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:20,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:20,396 INFO L87 Difference]: Start difference. First operand 9492 states and 15640 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:01:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:23,629 INFO L93 Difference]: Finished difference Result 30702 states and 51786 transitions. [2024-11-18 14:01:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 117 [2024-11-18 14:01:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:23,729 INFO L225 Difference]: With dead ends: 30702 [2024-11-18 14:01:23,729 INFO L226 Difference]: Without dead ends: 21258 [2024-11-18 14:01:23,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:23,768 INFO L432 NwaCegarLoop]: 727 mSDtfsCounter, 3277 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 4185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:23,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3314 Valid, 1848 Invalid, 4185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [904 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 14:01:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21258 states. [2024-11-18 14:01:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21258 to 18362. [2024-11-18 14:01:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18362 states, 13194 states have (on average 1.5834470213733516) internal successors, (20892), 13932 states have internal predecessors, (20892), 4359 states have call successors, (4359), 608 states have call predecessors, (4359), 808 states have return successors, (5177), 4318 states have call predecessors, (5177), 4354 states have call successors, (5177) [2024-11-18 14:01:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18362 states to 18362 states and 30428 transitions. [2024-11-18 14:01:25,369 INFO L78 Accepts]: Start accepts. Automaton has 18362 states and 30428 transitions. Word has length 117 [2024-11-18 14:01:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:25,369 INFO L471 AbstractCegarLoop]: Abstraction has 18362 states and 30428 transitions. [2024-11-18 14:01:25,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:01:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 18362 states and 30428 transitions. [2024-11-18 14:01:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 14:01:25,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:25,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:25,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:01:25,374 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:25,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash -985077692, now seen corresponding path program 1 times [2024-11-18 14:01:25,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:25,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143313038] [2024-11-18 14:01:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:01:25,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:25,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143313038] [2024-11-18 14:01:25,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143313038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:25,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:25,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828007044] [2024-11-18 14:01:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:25,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:25,553 INFO L87 Difference]: Start difference. First operand 18362 states and 30428 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:01:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:31,065 INFO L93 Difference]: Finished difference Result 67345 states and 114589 transitions. [2024-11-18 14:01:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 118 [2024-11-18 14:01:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:31,437 INFO L225 Difference]: With dead ends: 67345 [2024-11-18 14:01:31,437 INFO L226 Difference]: Without dead ends: 49033 [2024-11-18 14:01:31,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:31,553 INFO L432 NwaCegarLoop]: 733 mSDtfsCounter, 3289 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 3288 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 4195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 3288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:31,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3327 Valid, 1869 Invalid, 4195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 3288 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 14:01:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49033 states. [2024-11-18 14:01:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49033 to 41666. [2024-11-18 14:01:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41666 states, 29292 states have (on average 1.575822750238973) internal successors, (46159), 31088 states have internal predecessors, (46159), 10614 states have call successors, (10614), 1104 states have call predecessors, (10614), 1759 states have return successors, (12976), 10747 states have call predecessors, (12976), 10609 states have call successors, (12976) [2024-11-18 14:01:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41666 states to 41666 states and 69749 transitions. [2024-11-18 14:01:35,210 INFO L78 Accepts]: Start accepts. Automaton has 41666 states and 69749 transitions. Word has length 118 [2024-11-18 14:01:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:35,210 INFO L471 AbstractCegarLoop]: Abstraction has 41666 states and 69749 transitions. [2024-11-18 14:01:35,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:01:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 41666 states and 69749 transitions. [2024-11-18 14:01:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 14:01:35,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:35,213 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:35,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:01:35,213 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:35,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash -904135236, now seen corresponding path program 1 times [2024-11-18 14:01:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170672638] [2024-11-18 14:01:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:35,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:01:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:35,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170672638] [2024-11-18 14:01:35,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170672638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:35,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040053943] [2024-11-18 14:01:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:35,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:35,336 INFO L87 Difference]: Start difference. First operand 41666 states and 69749 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:01:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:47,137 INFO L93 Difference]: Finished difference Result 169160 states and 290605 transitions. [2024-11-18 14:01:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 119 [2024-11-18 14:01:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:48,335 INFO L225 Difference]: With dead ends: 169160 [2024-11-18 14:01:48,336 INFO L226 Difference]: Without dead ends: 127548 [2024-11-18 14:01:48,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:48,597 INFO L432 NwaCegarLoop]: 739 mSDtfsCounter, 3301 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 4206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:48,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3340 Valid, 1890 Invalid, 4206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 3297 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 14:01:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127548 states. [2024-11-18 14:01:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127548 to 105906. [2024-11-18 14:01:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105906 states, 73416 states have (on average 1.5731448185681596) internal successors, (115494), 78096 states have internal predecessors, (115494), 28189 states have call successors, (28189), 2096 states have call predecessors, (28189), 4300 states have return successors, (35557), 29024 states have call predecessors, (35557), 28184 states have call successors, (35557)