./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product03.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_spec3_product03.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 ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:02:02,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:02:02,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:02:02,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:02:02,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:02:03,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:02:03,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:02:03,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:02:03,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:02:03,011 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:02:03,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:02:03,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:02:03,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:02:03,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:02:03,013 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:02:03,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:02:03,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:02:03,014 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:02:03,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:02:03,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:02:03,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:02:03,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:02:03,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:02:03,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:02:03,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:02:03,016 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:02:03,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:02:03,016 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:02:03,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:02:03,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:02:03,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:02:03,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:02:03,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:02:03,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:02:03,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:02:03,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:02:03,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:02:03,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:02:03,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:02:03,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:02:03,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:02:03,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:02:03,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 [2024-11-18 14:02:03,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:02:03,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:02:03,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:02:03,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:02:03,295 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:02:03,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2024-11-18 14:02:04,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:02:05,201 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:02:05,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2024-11-18 14:02:05,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91175c7ad/4fa6b1c65ba84854bf7c5e82fb759753/FLAG4b9ce951e [2024-11-18 14:02:05,515 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91175c7ad/4fa6b1c65ba84854bf7c5e82fb759753 [2024-11-18 14:02:05,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:02:05,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:02:05,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:02:05,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:02:05,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:02:05,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:02:05" (1/1) ... [2024-11-18 14:02:05,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c20914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:05, skipping insertion in model container [2024-11-18 14:02:05,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:02:05" (1/1) ... [2024-11-18 14:02:05,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:02:06,318 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_spec3_product03.cil.c[33356,33369] [2024-11-18 14:02:06,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:02:06,435 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:02:06,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-18 14:02:06,445 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2024-11-18 14:02:06,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [514] [2024-11-18 14:02:06,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [704] [2024-11-18 14:02:06,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1371] [2024-11-18 14:02:06,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1389] [2024-11-18 14:02:06,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1427] [2024-11-18 14:02:06,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1436] [2024-11-18 14:02:06,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2938] [2024-11-18 14:02:06,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3057] [2024-11-18 14:02:06,477 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_spec3_product03.cil.c[33356,33369] [2024-11-18 14:02:06,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:02:06,541 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:02:06,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06 WrapperNode [2024-11-18 14:02:06,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:02:06,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:02:06,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:02:06,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:02:06,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,617 INFO L138 Inliner]: procedures = 90, calls = 342, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 1042 [2024-11-18 14:02:06,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:02:06,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:02:06,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:02:06,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:02:06,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,663 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 14:02:06,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:02:06,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:02:06,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:02:06,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:02:06,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (1/1) ... [2024-11-18 14:02:06,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:02:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:06,755 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 14:02:06,758 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 14:02:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:02:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-18 14:02:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-18 14:02:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:02:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:02:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-18 14:02:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-18 14:02:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:02:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:02:06,818 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-18 14:02:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-18 14:02:06,819 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:02:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:02:06,819 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:02:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:02:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:02:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:02:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:02:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:02:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:02:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:02:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:02:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:02:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:02:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:02:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 14:02:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 14:02:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-18 14:02:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-18 14:02:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:02:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:02:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-18 14:02:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-18 14:02:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:02:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:02:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:02:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:02:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:02:06,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:02:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:02:06,824 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:02:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2024-11-18 14:02:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2024-11-18 14:02:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:02:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:02:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:02:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:02:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:02:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:02:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:02:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:02:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:02:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:02:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:02:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:02:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:02:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:02:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:02:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:02:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:02:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:02:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:02:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:02:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 14:02:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 14:02:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:02:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:02:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:02:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:02:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:02:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:02:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:02:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:02:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:02:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:02:07,036 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:02:07,040 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:02:08,379 INFO L? ?]: Removed 439 outVars from TransFormulas that were not future-live. [2024-11-18 14:02:08,380 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:02:08,399 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:02:08,399 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:02:08,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:02:08 BoogieIcfgContainer [2024-11-18 14:02:08,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:02:08,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:02:08,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:02:08,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:02:08,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:02:05" (1/3) ... [2024-11-18 14:02:08,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43198b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:02:08, skipping insertion in model container [2024-11-18 14:02:08,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:02:06" (2/3) ... [2024-11-18 14:02:08,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43198b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:02:08, skipping insertion in model container [2024-11-18 14:02:08,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:02:08" (3/3) ... [2024-11-18 14:02:08,407 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2024-11-18 14:02:08,423 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:02:08,423 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:02:08,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:02:08,510 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;@62e19138, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:02:08,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:02:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 574 states, 440 states have (on average 1.6727272727272726) internal successors, (736), 458 states have internal predecessors, (736), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-18 14:02:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:02:08,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:08,553 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:08,554 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:08,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:08,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1064458506, now seen corresponding path program 1 times [2024-11-18 14:02:08,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:08,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307402703] [2024-11-18 14:02:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:08,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307402703] [2024-11-18 14:02:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307402703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:09,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:09,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:02:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237040580] [2024-11-18 14:02:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:09,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:02:09,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:09,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:02:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:02:09,226 INFO L87 Difference]: Start difference. First operand has 574 states, 440 states have (on average 1.6727272727272726) internal successors, (736), 458 states have internal predecessors, (736), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:09,409 INFO L93 Difference]: Finished difference Result 1145 states and 1908 transitions. [2024-11-18 14:02:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:02:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2024-11-18 14:02:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:09,431 INFO L225 Difference]: With dead ends: 1145 [2024-11-18 14:02:09,431 INFO L226 Difference]: Without dead ends: 579 [2024-11-18 14:02:09,441 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 14:02:09,444 INFO L432 NwaCegarLoop]: 933 mSDtfsCounter, 91 mSDsluCounter, 4579 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:09,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5512 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:02:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-18 14:02:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2024-11-18 14:02:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 443 states have (on average 1.6636568848758464) internal successors, (737), 461 states have internal predecessors, (737), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-11-18 14:02:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 950 transitions. [2024-11-18 14:02:09,550 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 950 transitions. Word has length 113 [2024-11-18 14:02:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:09,550 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 950 transitions. [2024-11-18 14:02:09,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 950 transitions. [2024-11-18 14:02:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 14:02:09,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:09,556 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:09,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:02:09,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:09,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash -601072762, now seen corresponding path program 1 times [2024-11-18 14:02:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:09,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673660481] [2024-11-18 14:02:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:09,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:09,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673660481] [2024-11-18 14:02:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673660481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:09,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:09,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:09,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802342094] [2024-11-18 14:02:09,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:09,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:09,737 INFO L87 Difference]: Start difference. First operand 577 states and 950 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:09,832 INFO L93 Difference]: Finished difference Result 1136 states and 1881 transitions. [2024-11-18 14:02:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2024-11-18 14:02:09,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:09,837 INFO L225 Difference]: With dead ends: 1136 [2024-11-18 14:02:09,837 INFO L226 Difference]: Without dead ends: 553 [2024-11-18 14:02:09,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:09,841 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 14 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:09,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2755 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-18 14:02:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-11-18 14:02:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 422 states have (on average 1.6540284360189574) internal successors, (698), 438 states have internal predecessors, (698), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 907 transitions. [2024-11-18 14:02:09,872 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 907 transitions. Word has length 114 [2024-11-18 14:02:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:09,872 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 907 transitions. [2024-11-18 14:02:09,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 907 transitions. [2024-11-18 14:02:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 14:02:09,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:09,876 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:09,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:02:09,877 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:09,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:09,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1244322680, now seen corresponding path program 1 times [2024-11-18 14:02:09,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:09,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346362337] [2024-11-18 14:02:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:09,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:10,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:10,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346362337] [2024-11-18 14:02:10,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346362337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:10,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:10,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:02:10,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759613158] [2024-11-18 14:02:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:10,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:02:10,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:02:10,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:02:10,283 INFO L87 Difference]: Start difference. First operand 553 states and 907 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:10,465 INFO L93 Difference]: Finished difference Result 1099 states and 1813 transitions. [2024-11-18 14:02:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:02:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2024-11-18 14:02:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:10,472 INFO L225 Difference]: With dead ends: 1099 [2024-11-18 14:02:10,473 INFO L226 Difference]: Without dead ends: 547 [2024-11-18 14:02:10,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:02:10,478 INFO L432 NwaCegarLoop]: 896 mSDtfsCounter, 77 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5306 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:10,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5306 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:02:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-18 14:02:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2024-11-18 14:02:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 416 states have (on average 1.6466346153846154) internal successors, (685), 432 states have internal predecessors, (685), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 894 transitions. [2024-11-18 14:02:10,539 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 894 transitions. Word has length 114 [2024-11-18 14:02:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:10,542 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 894 transitions. [2024-11-18 14:02:10,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 894 transitions. [2024-11-18 14:02:10,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-18 14:02:10,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:10,550 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:10,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:02:10,551 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:10,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash 562107374, now seen corresponding path program 1 times [2024-11-18 14:02:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596758902] [2024-11-18 14:02:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:10,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:10,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596758902] [2024-11-18 14:02:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596758902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:10,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:10,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:02:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456038333] [2024-11-18 14:02:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:10,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:02:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:02:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:02:10,758 INFO L87 Difference]: Start difference. First operand 547 states and 894 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:10,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:10,826 INFO L93 Difference]: Finished difference Result 1087 states and 1787 transitions. [2024-11-18 14:02:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:02:10,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2024-11-18 14:02:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:10,831 INFO L225 Difference]: With dead ends: 1087 [2024-11-18 14:02:10,831 INFO L226 Difference]: Without dead ends: 541 [2024-11-18 14:02:10,834 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 14:02:10,835 INFO L432 NwaCegarLoop]: 884 mSDtfsCounter, 63 mSDsluCounter, 4362 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5246 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:10,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5246 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-18 14:02:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2024-11-18 14:02:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 410 states have (on average 1.6390243902439023) internal successors, (672), 426 states have internal predecessors, (672), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 881 transitions. [2024-11-18 14:02:10,852 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 881 transitions. Word has length 115 [2024-11-18 14:02:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:10,853 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 881 transitions. [2024-11-18 14:02:10,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 881 transitions. [2024-11-18 14:02:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:02:10,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:10,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:10,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:02:10,859 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:10,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1074768036, now seen corresponding path program 1 times [2024-11-18 14:02:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:10,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90864274] [2024-11-18 14:02:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:11,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:11,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90864274] [2024-11-18 14:02:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90864274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:11,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:11,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:02:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978047329] [2024-11-18 14:02:11,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:11,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:02:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:02:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:02:11,049 INFO L87 Difference]: Start difference. First operand 541 states and 881 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:11,130 INFO L93 Difference]: Finished difference Result 1075 states and 1761 transitions. [2024-11-18 14:02:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:02:11,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-11-18 14:02:11,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:11,134 INFO L225 Difference]: With dead ends: 1075 [2024-11-18 14:02:11,135 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 14:02:11,137 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 14:02:11,139 INFO L432 NwaCegarLoop]: 872 mSDtfsCounter, 49 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:11,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5186 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 14:02:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-18 14:02:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 404 states have (on average 1.631188118811881) internal successors, (659), 420 states have internal predecessors, (659), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:11,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 868 transitions. [2024-11-18 14:02:11,159 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 868 transitions. Word has length 116 [2024-11-18 14:02:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:11,159 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 868 transitions. [2024-11-18 14:02:11,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 868 transitions. [2024-11-18 14:02:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:02:11,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:11,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:11,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:02:11,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:11,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:11,164 INFO L85 PathProgramCache]: Analyzing trace with hash -327107363, now seen corresponding path program 1 times [2024-11-18 14:02:11,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:11,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588640612] [2024-11-18 14:02:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:11,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588640612] [2024-11-18 14:02:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588640612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:11,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:11,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:02:11,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467663733] [2024-11-18 14:02:11,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:11,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:02:11,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:11,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:02:11,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:02:11,320 INFO L87 Difference]: Start difference. First operand 535 states and 868 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:11,377 INFO L93 Difference]: Finished difference Result 1063 states and 1735 transitions. [2024-11-18 14:02:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:02:11,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-11-18 14:02:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:11,380 INFO L225 Difference]: With dead ends: 1063 [2024-11-18 14:02:11,380 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 14:02:11,383 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 14:02:11,383 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 24 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5138 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:11,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5138 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 14:02:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-18 14:02:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 404 states have (on average 1.6287128712871286) internal successors, (658), 420 states have internal predecessors, (658), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 867 transitions. [2024-11-18 14:02:11,399 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 867 transitions. Word has length 116 [2024-11-18 14:02:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:11,399 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 867 transitions. [2024-11-18 14:02:11,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 867 transitions. [2024-11-18 14:02:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-18 14:02:11,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:11,402 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:11,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:02:11,402 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:11,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:11,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2053631698, now seen corresponding path program 1 times [2024-11-18 14:02:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:11,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940181962] [2024-11-18 14:02:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:11,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940181962] [2024-11-18 14:02:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940181962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:11,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:11,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:11,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109551176] [2024-11-18 14:02:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:11,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:11,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:11,495 INFO L87 Difference]: Start difference. First operand 535 states and 867 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:11,561 INFO L93 Difference]: Finished difference Result 1054 states and 1720 transitions. [2024-11-18 14:02:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:02:11,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2024-11-18 14:02:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:11,564 INFO L225 Difference]: With dead ends: 1054 [2024-11-18 14:02:11,564 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 14:02:11,566 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 14:02:11,567 INFO L432 NwaCegarLoop]: 852 mSDtfsCounter, 15 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:11,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2541 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 14:02:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-18 14:02:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 404 states have (on average 1.6262376237623761) internal successors, (657), 420 states have internal predecessors, (657), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 866 transitions. [2024-11-18 14:02:11,583 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 866 transitions. Word has length 117 [2024-11-18 14:02:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:11,584 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 866 transitions. [2024-11-18 14:02:11,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 866 transitions. [2024-11-18 14:02:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 14:02:11,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:11,586 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:11,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:02:11,586 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:11,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 466323196, now seen corresponding path program 1 times [2024-11-18 14:02:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320215590] [2024-11-18 14:02:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:11,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:11,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320215590] [2024-11-18 14:02:11,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320215590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:11,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:11,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:11,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160269307] [2024-11-18 14:02:11,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:11,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:11,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:11,671 INFO L87 Difference]: Start difference. First operand 535 states and 866 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:11,709 INFO L93 Difference]: Finished difference Result 1054 states and 1718 transitions. [2024-11-18 14:02:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:02:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-11-18 14:02:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:11,715 INFO L225 Difference]: With dead ends: 1054 [2024-11-18 14:02:11,716 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 14:02:11,718 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 14:02:11,718 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 14 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:11,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2543 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 14:02:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-18 14:02:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 404 states have (on average 1.6237623762376239) internal successors, (656), 420 states have internal predecessors, (656), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 865 transitions. [2024-11-18 14:02:11,733 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 865 transitions. Word has length 118 [2024-11-18 14:02:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:11,734 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 865 transitions. [2024-11-18 14:02:11,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 865 transitions. [2024-11-18 14:02:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 14:02:11,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:11,736 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:11,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:02:11,736 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:11,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1048123287, now seen corresponding path program 1 times [2024-11-18 14:02:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:11,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177986051] [2024-11-18 14:02:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:11,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:11,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177986051] [2024-11-18 14:02:11,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177986051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:11,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:11,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547333893] [2024-11-18 14:02:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:11,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:11,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:11,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:11,823 INFO L87 Difference]: Start difference. First operand 535 states and 865 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:11,857 INFO L93 Difference]: Finished difference Result 1054 states and 1716 transitions. [2024-11-18 14:02:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:02:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2024-11-18 14:02:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:11,864 INFO L225 Difference]: With dead ends: 1054 [2024-11-18 14:02:11,864 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 14:02:11,866 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 14:02:11,867 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 13 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2545 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 14:02:11,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2545 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 14:02:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-18 14:02:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 404 states have (on average 1.6212871287128714) internal successors, (655), 420 states have internal predecessors, (655), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 864 transitions. [2024-11-18 14:02:11,882 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 864 transitions. Word has length 119 [2024-11-18 14:02:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:11,882 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 864 transitions. [2024-11-18 14:02:11,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 864 transitions. [2024-11-18 14:02:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 14:02:11,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:11,885 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:11,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:02:11,885 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:11,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 152813025, now seen corresponding path program 1 times [2024-11-18 14:02:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:11,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723197125] [2024-11-18 14:02:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723197125] [2024-11-18 14:02:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723197125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:12,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:12,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637612111] [2024-11-18 14:02:12,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:12,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:12,023 INFO L87 Difference]: Start difference. First operand 535 states and 864 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:12,064 INFO L93 Difference]: Finished difference Result 1054 states and 1714 transitions. [2024-11-18 14:02:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:02:12,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2024-11-18 14:02:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:12,077 INFO L225 Difference]: With dead ends: 1054 [2024-11-18 14:02:12,077 INFO L226 Difference]: Without dead ends: 535 [2024-11-18 14:02:12,080 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 14:02:12,081 INFO L432 NwaCegarLoop]: 855 mSDtfsCounter, 12 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:12,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2547 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-18 14:02:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-18 14:02:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 404 states have (on average 1.618811881188119) internal successors, (654), 420 states have internal predecessors, (654), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:02:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 863 transitions. [2024-11-18 14:02:12,099 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 863 transitions. Word has length 120 [2024-11-18 14:02:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:12,100 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 863 transitions. [2024-11-18 14:02:12,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:02:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 863 transitions. [2024-11-18 14:02:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-18 14:02:12,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:12,103 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:12,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:02:12,103 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:12,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash 711722076, now seen corresponding path program 1 times [2024-11-18 14:02:12,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:12,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616695677] [2024-11-18 14:02:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:12,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:02:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616695677] [2024-11-18 14:02:12,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616695677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157528609] [2024-11-18 14:02:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:12,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:12,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:12,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:02:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:12,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:02:12,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:02:12,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157528609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:12,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:12,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-18 14:02:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686984304] [2024-11-18 14:02:12,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:12,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:02:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:02:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:02:12,754 INFO L87 Difference]: Start difference. First operand 535 states and 863 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:12,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:12,845 INFO L93 Difference]: Finished difference Result 1516 states and 2477 transitions. [2024-11-18 14:02:12,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:02:12,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2024-11-18 14:02:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:12,851 INFO L225 Difference]: With dead ends: 1516 [2024-11-18 14:02:12,852 INFO L226 Difference]: Without dead ends: 999 [2024-11-18 14:02:12,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:02:12,856 INFO L432 NwaCegarLoop]: 1466 mSDtfsCounter, 788 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:12,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 2223 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2024-11-18 14:02:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 984. [2024-11-18 14:02:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 750 states have (on average 1.632) internal successors, (1224), 781 states have internal predecessors, (1224), 187 states have call successors, (187), 47 states have call predecessors, (187), 46 states have return successors, (189), 181 states have call predecessors, (189), 184 states have call successors, (189) [2024-11-18 14:02:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1600 transitions. [2024-11-18 14:02:12,892 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1600 transitions. Word has length 121 [2024-11-18 14:02:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:12,892 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1600 transitions. [2024-11-18 14:02:12,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1600 transitions. [2024-11-18 14:02:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 14:02:12,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:12,896 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:12,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:02:13,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 14:02:13,101 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:13,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2085059873, now seen corresponding path program 1 times [2024-11-18 14:02:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91410973] [2024-11-18 14:02:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:02:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91410973] [2024-11-18 14:02:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91410973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695913189] [2024-11-18 14:02:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:13,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:13,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:13,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:13,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:02:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:13,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:02:13,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:02:13,723 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695913189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:13,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:13,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-18 14:02:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537792144] [2024-11-18 14:02:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:13,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:02:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:02:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:02:13,725 INFO L87 Difference]: Start difference. First operand 984 states and 1600 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:13,798 INFO L93 Difference]: Finished difference Result 2414 states and 3953 transitions. [2024-11-18 14:02:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:02:13,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2024-11-18 14:02:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:13,843 INFO L225 Difference]: With dead ends: 2414 [2024-11-18 14:02:13,843 INFO L226 Difference]: Without dead ends: 1448 [2024-11-18 14:02:13,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:02:13,848 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 787 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:13,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1686 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2024-11-18 14:02:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1400. [2024-11-18 14:02:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1069 states have (on average 1.6445275958840038) internal successors, (1758), 1115 states have internal predecessors, (1758), 265 states have call successors, (265), 65 states have call predecessors, (265), 65 states have return successors, (272), 258 states have call predecessors, (272), 262 states have call successors, (272) [2024-11-18 14:02:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2295 transitions. [2024-11-18 14:02:13,906 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2295 transitions. Word has length 122 [2024-11-18 14:02:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:13,906 INFO L471 AbstractCegarLoop]: Abstraction has 1400 states and 2295 transitions. [2024-11-18 14:02:13,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2295 transitions. [2024-11-18 14:02:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:02:13,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:13,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:13,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:02:14,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 14:02:14,114 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:14,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:14,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1609599375, now seen corresponding path program 1 times [2024-11-18 14:02:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:14,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762429330] [2024-11-18 14:02:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:14,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:02:14,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762429330] [2024-11-18 14:02:14,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762429330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:14,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:14,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:02:14,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827656192] [2024-11-18 14:02:14,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:14,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:02:14,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:02:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:02:14,254 INFO L87 Difference]: Start difference. First operand 1400 states and 2295 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:02:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:14,734 INFO L93 Difference]: Finished difference Result 4136 states and 6886 transitions. [2024-11-18 14:02:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:02:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2024-11-18 14:02:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:14,752 INFO L225 Difference]: With dead ends: 4136 [2024-11-18 14:02:14,752 INFO L226 Difference]: Without dead ends: 2754 [2024-11-18 14:02:14,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:02:14,762 INFO L432 NwaCegarLoop]: 962 mSDtfsCounter, 852 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 4426 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:14,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 4426 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:02:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2024-11-18 14:02:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2707. [2024-11-18 14:02:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2071 states have (on average 1.6479961371318204) internal successors, (3413), 2159 states have internal predecessors, (3413), 509 states have call successors, (509), 124 states have call predecessors, (509), 126 states have return successors, (585), 501 states have call predecessors, (585), 505 states have call successors, (585) [2024-11-18 14:02:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4507 transitions. [2024-11-18 14:02:14,923 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4507 transitions. Word has length 124 [2024-11-18 14:02:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:14,923 INFO L471 AbstractCegarLoop]: Abstraction has 2707 states and 4507 transitions. [2024-11-18 14:02:14,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:02:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4507 transitions. [2024-11-18 14:02:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 14:02:14,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:14,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:14,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:02:14,930 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:14,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash -616203294, now seen corresponding path program 1 times [2024-11-18 14:02:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:14,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369869699] [2024-11-18 14:02:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:02:15,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369869699] [2024-11-18 14:02:15,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369869699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669275857] [2024-11-18 14:02:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:15,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:15,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:15,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:15,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:02:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:15,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:02:15,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:02:15,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:15,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669275857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:15,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:15,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-18 14:02:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808114466] [2024-11-18 14:02:15,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:15,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:02:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:02:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:02:15,671 INFO L87 Difference]: Start difference. First operand 2707 states and 4507 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:02:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:16,028 INFO L93 Difference]: Finished difference Result 7831 states and 13226 transitions. [2024-11-18 14:02:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:02:16,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-11-18 14:02:16,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:16,073 INFO L225 Difference]: With dead ends: 7831 [2024-11-18 14:02:16,073 INFO L226 Difference]: Without dead ends: 5143 [2024-11-18 14:02:16,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:02:16,100 INFO L432 NwaCegarLoop]: 885 mSDtfsCounter, 698 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:16,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1652 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:02:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2024-11-18 14:02:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5106. [2024-11-18 14:02:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 3892 states have (on average 1.6145940390544706) internal successors, (6284), 4066 states have internal predecessors, (6284), 966 states have call successors, (966), 242 states have call predecessors, (966), 247 states have return successors, (1215), 953 states have call predecessors, (1215), 960 states have call successors, (1215) [2024-11-18 14:02:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8465 transitions. [2024-11-18 14:02:16,464 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8465 transitions. Word has length 125 [2024-11-18 14:02:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:16,465 INFO L471 AbstractCegarLoop]: Abstraction has 5106 states and 8465 transitions. [2024-11-18 14:02:16,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:02:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8465 transitions. [2024-11-18 14:02:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 14:02:16,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:16,472 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:16,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:02:16,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:16,675 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:16,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1201905060, now seen corresponding path program 1 times [2024-11-18 14:02:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:16,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332396803] [2024-11-18 14:02:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:02:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:17,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332396803] [2024-11-18 14:02:17,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332396803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:17,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132547837] [2024-11-18 14:02:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:17,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:17,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:17,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:17,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:02:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:17,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:02:17,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:02:17,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:17,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132547837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:17,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:17,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2024-11-18 14:02:17,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150564568] [2024-11-18 14:02:17,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:17,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:02:17,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:17,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:02:17,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:02:17,360 INFO L87 Difference]: Start difference. First operand 5106 states and 8465 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:02:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:18,014 INFO L93 Difference]: Finished difference Result 15204 states and 25528 transitions. [2024-11-18 14:02:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:02:18,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-18 14:02:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:18,137 INFO L225 Difference]: With dead ends: 15204 [2024-11-18 14:02:18,139 INFO L226 Difference]: Without dead ends: 10119 [2024-11-18 14:02:18,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:02:18,290 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 847 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:18,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1704 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:02:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10119 states. [2024-11-18 14:02:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10119 to 10016. [2024-11-18 14:02:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10016 states, 7660 states have (on average 1.6181462140992167) internal successors, (12395), 7988 states have internal predecessors, (12395), 1872 states have call successors, (1872), 466 states have call predecessors, (1872), 483 states have return successors, (2424), 1867 states have call predecessors, (2424), 1862 states have call successors, (2424) [2024-11-18 14:02:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10016 states to 10016 states and 16691 transitions. [2024-11-18 14:02:18,692 INFO L78 Accepts]: Start accepts. Automaton has 10016 states and 16691 transitions. Word has length 127 [2024-11-18 14:02:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:18,693 INFO L471 AbstractCegarLoop]: Abstraction has 10016 states and 16691 transitions. [2024-11-18 14:02:18,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:02:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10016 states and 16691 transitions. [2024-11-18 14:02:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 14:02:18,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:18,698 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:18,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:02:18,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:02:18,899 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:18,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash 190787810, now seen corresponding path program 1 times [2024-11-18 14:02:18,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:18,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572147633] [2024-11-18 14:02:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:18,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:02:19,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:19,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572147633] [2024-11-18 14:02:19,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572147633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:19,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141909174] [2024-11-18 14:02:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:19,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:19,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:19,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:19,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:02:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:19,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:02:19,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:02:19,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:19,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141909174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:19,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:19,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-18 14:02:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170955520] [2024-11-18 14:02:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:19,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:02:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:02:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:02:19,701 INFO L87 Difference]: Start difference. First operand 10016 states and 16691 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-18 14:02:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:20,984 INFO L93 Difference]: Finished difference Result 18947 states and 31646 transitions. [2024-11-18 14:02:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:02:20,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-11-18 14:02:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:21,189 INFO L225 Difference]: With dead ends: 18947 [2024-11-18 14:02:21,193 INFO L226 Difference]: Without dead ends: 8949 [2024-11-18 14:02:21,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:02:21,366 INFO L432 NwaCegarLoop]: 910 mSDtfsCounter, 718 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:21,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 4175 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 14:02:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2024-11-18 14:02:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 8927. [2024-11-18 14:02:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8927 states, 6847 states have (on average 1.6043522710676208) internal successors, (10985), 7122 states have internal predecessors, (10985), 1638 states have call successors, (1638), 426 states have call predecessors, (1638), 441 states have return successors, (2098), 1634 states have call predecessors, (2098), 1628 states have call successors, (2098) [2024-11-18 14:02:22,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8927 states to 8927 states and 14721 transitions. [2024-11-18 14:02:22,055 INFO L78 Accepts]: Start accepts. Automaton has 8927 states and 14721 transitions. Word has length 127 [2024-11-18 14:02:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:22,056 INFO L471 AbstractCegarLoop]: Abstraction has 8927 states and 14721 transitions. [2024-11-18 14:02:22,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-18 14:02:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 8927 states and 14721 transitions. [2024-11-18 14:02:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 14:02:22,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:22,063 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:22,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:02:22,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 14:02:22,268 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:22,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1126236296, now seen corresponding path program 1 times [2024-11-18 14:02:22,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:22,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41953271] [2024-11-18 14:02:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:22,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 14:02:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41953271] [2024-11-18 14:02:22,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41953271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:22,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:22,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958554426] [2024-11-18 14:02:22,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:22,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:22,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:22,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:22,539 INFO L87 Difference]: Start difference. First operand 8927 states and 14721 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:02:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:23,253 INFO L93 Difference]: Finished difference Result 17884 states and 29837 transitions. [2024-11-18 14:02:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-18 14:02:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:23,306 INFO L225 Difference]: With dead ends: 17884 [2024-11-18 14:02:23,307 INFO L226 Difference]: Without dead ends: 8975 [2024-11-18 14:02:23,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:23,358 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 12 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:23,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2513 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:02:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2024-11-18 14:02:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 8943. [2024-11-18 14:02:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8943 states, 6859 states have (on average 1.6027117655634933) internal successors, (10993), 7134 states have internal predecessors, (10993), 1638 states have call successors, (1638), 434 states have call predecessors, (1638), 445 states have return successors, (2072), 1630 states have call predecessors, (2072), 1628 states have call successors, (2072) [2024-11-18 14:02:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8943 states to 8943 states and 14703 transitions. [2024-11-18 14:02:23,648 INFO L78 Accepts]: Start accepts. Automaton has 8943 states and 14703 transitions. Word has length 127 [2024-11-18 14:02:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:23,649 INFO L471 AbstractCegarLoop]: Abstraction has 8943 states and 14703 transitions. [2024-11-18 14:02:23,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:02:23,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8943 states and 14703 transitions. [2024-11-18 14:02:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 14:02:23,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:23,653 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:23,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:02:23,653 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:23,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash -710353866, now seen corresponding path program 1 times [2024-11-18 14:02:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:23,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876217866] [2024-11-18 14:02:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:02:23,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876217866] [2024-11-18 14:02:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876217866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:23,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:02:23,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664659098] [2024-11-18 14:02:23,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:23,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:02:23,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:23,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:02:23,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:02:23,788 INFO L87 Difference]: Start difference. First operand 8943 states and 14703 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:02:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:24,999 INFO L93 Difference]: Finished difference Result 26775 states and 45207 transitions. [2024-11-18 14:02:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:02:25,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-11-18 14:02:25,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:25,150 INFO L225 Difference]: With dead ends: 26775 [2024-11-18 14:02:25,151 INFO L226 Difference]: Without dead ends: 17850 [2024-11-18 14:02:25,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:02:25,225 INFO L432 NwaCegarLoop]: 931 mSDtfsCounter, 847 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:25,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 4310 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:02:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17850 states. [2024-11-18 14:02:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17850 to 17749. [2024-11-18 14:02:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17749 states, 13624 states have (on average 1.5990898414562538) internal successors, (21786), 14165 states have internal predecessors, (21786), 3231 states have call successors, (3231), 862 states have call predecessors, (3231), 893 states have return successors, (4745), 3233 states have call predecessors, (4745), 3213 states have call successors, (4745) [2024-11-18 14:02:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17749 states to 17749 states and 29762 transitions. [2024-11-18 14:02:26,232 INFO L78 Accepts]: Start accepts. Automaton has 17749 states and 29762 transitions. Word has length 135 [2024-11-18 14:02:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:26,233 INFO L471 AbstractCegarLoop]: Abstraction has 17749 states and 29762 transitions. [2024-11-18 14:02:26,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:02:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 17749 states and 29762 transitions. [2024-11-18 14:02:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-18 14:02:26,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:26,237 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:26,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:02:26,237 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:26,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1725870857, now seen corresponding path program 1 times [2024-11-18 14:02:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030103335] [2024-11-18 14:02:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 14:02:26,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030103335] [2024-11-18 14:02:26,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030103335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:26,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:26,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:26,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114970372] [2024-11-18 14:02:26,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:26,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:26,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:26,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:26,318 INFO L87 Difference]: Start difference. First operand 17749 states and 29762 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:02:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:27,871 INFO L93 Difference]: Finished difference Result 35624 states and 60739 transitions. [2024-11-18 14:02:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:27,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2024-11-18 14:02:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:28,002 INFO L225 Difference]: With dead ends: 35624 [2024-11-18 14:02:28,003 INFO L226 Difference]: Without dead ends: 17893 [2024-11-18 14:02:28,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:28,137 INFO L432 NwaCegarLoop]: 843 mSDtfsCounter, 12 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:28,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2507 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17893 states. [2024-11-18 14:02:28,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17893 to 17829. [2024-11-18 14:02:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17829 states, 13696 states have (on average 1.5965245327102804) internal successors, (21866), 14221 states have internal predecessors, (21866), 3231 states have call successors, (3231), 894 states have call predecessors, (3231), 901 states have return successors, (4705), 3225 states have call predecessors, (4705), 3213 states have call successors, (4705) [2024-11-18 14:02:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17829 states to 17829 states and 29802 transitions. [2024-11-18 14:02:29,030 INFO L78 Accepts]: Start accepts. Automaton has 17829 states and 29802 transitions. Word has length 136 [2024-11-18 14:02:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:29,030 INFO L471 AbstractCegarLoop]: Abstraction has 17829 states and 29802 transitions. [2024-11-18 14:02:29,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:02:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 17829 states and 29802 transitions. [2024-11-18 14:02:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 14:02:29,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:29,035 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:29,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:02:29,035 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:29,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1967892634, now seen corresponding path program 1 times [2024-11-18 14:02:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:29,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706916199] [2024-11-18 14:02:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:02:29,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706916199] [2024-11-18 14:02:29,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706916199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:29,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:29,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:02:29,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334843535] [2024-11-18 14:02:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:29,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:02:29,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:02:29,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:02:29,182 INFO L87 Difference]: Start difference. First operand 17829 states and 29802 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:02:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:31,705 INFO L93 Difference]: Finished difference Result 53573 states and 93050 transitions. [2024-11-18 14:02:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:02:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-11-18 14:02:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:32,007 INFO L225 Difference]: With dead ends: 53573 [2024-11-18 14:02:32,008 INFO L226 Difference]: Without dead ends: 35762 [2024-11-18 14:02:32,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:02:32,182 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 842 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:32,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 4286 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:02:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35762 states. [2024-11-18 14:02:34,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35762 to 35597. [2024-11-18 14:02:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35597 states, 27355 states have (on average 1.5929446170718333) internal successors, (43575), 28396 states have internal predecessors, (43575), 6428 states have call successors, (6428), 1782 states have call predecessors, (6428), 1813 states have return successors, (11267), 6442 states have call predecessors, (11267), 6394 states have call successors, (11267) [2024-11-18 14:02:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35597 states to 35597 states and 61270 transitions. [2024-11-18 14:02:35,085 INFO L78 Accepts]: Start accepts. Automaton has 35597 states and 61270 transitions. Word has length 145 [2024-11-18 14:02:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:35,086 INFO L471 AbstractCegarLoop]: Abstraction has 35597 states and 61270 transitions. [2024-11-18 14:02:35,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:02:35,087 INFO L276 IsEmpty]: Start isEmpty. Operand 35597 states and 61270 transitions. [2024-11-18 14:02:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:02:35,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:35,094 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:35,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:02:35,095 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:35,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1698097119, now seen corresponding path program 1 times [2024-11-18 14:02:35,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:35,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168526100] [2024-11-18 14:02:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:35,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 14:02:35,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168526100] [2024-11-18 14:02:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168526100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:35,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:35,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928188057] [2024-11-18 14:02:35,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:35,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:35,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:35,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:35,195 INFO L87 Difference]: Start difference. First operand 35597 states and 61270 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:02:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:37,826 INFO L93 Difference]: Finished difference Result 71464 states and 126196 transitions. [2024-11-18 14:02:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-11-18 14:02:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:38,113 INFO L225 Difference]: With dead ends: 71464 [2024-11-18 14:02:38,114 INFO L226 Difference]: Without dead ends: 35885 [2024-11-18 14:02:38,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:38,361 INFO L432 NwaCegarLoop]: 843 mSDtfsCounter, 11 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:38,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2507 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:02:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35885 states. [2024-11-18 14:02:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35885 to 35757. [2024-11-18 14:02:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35757 states, 27499 states have (on average 1.5904214698716317) internal successors, (43735), 28540 states have internal predecessors, (43735), 6428 states have call successors, (6428), 1814 states have call predecessors, (6428), 1829 states have return successors, (11211), 6426 states have call predecessors, (11211), 6394 states have call successors, (11211) [2024-11-18 14:02:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35757 states to 35757 states and 61374 transitions. [2024-11-18 14:02:40,206 INFO L78 Accepts]: Start accepts. Automaton has 35757 states and 61374 transitions. Word has length 146 [2024-11-18 14:02:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:40,207 INFO L471 AbstractCegarLoop]: Abstraction has 35757 states and 61374 transitions. [2024-11-18 14:02:40,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:02:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 35757 states and 61374 transitions. [2024-11-18 14:02:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:02:40,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:40,214 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:40,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:02:40,215 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:40,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1787047039, now seen corresponding path program 1 times [2024-11-18 14:02:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534964341] [2024-11-18 14:02:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 14:02:40,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:40,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534964341] [2024-11-18 14:02:40,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534964341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:40,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:40,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:02:40,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768686827] [2024-11-18 14:02:40,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:40,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:02:40,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:40,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:02:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:02:40,388 INFO L87 Difference]: Start difference. First operand 35757 states and 61374 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:02:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:44,612 INFO L93 Difference]: Finished difference Result 107593 states and 195562 transitions. [2024-11-18 14:02:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:02:44,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-11-18 14:02:44,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:45,286 INFO L225 Difference]: With dead ends: 107593 [2024-11-18 14:02:45,286 INFO L226 Difference]: Without dead ends: 71854 [2024-11-18 14:02:45,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:02:45,762 INFO L432 NwaCegarLoop]: 913 mSDtfsCounter, 839 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 4255 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:45,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 4255 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:02:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71854 states. [2024-11-18 14:02:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71854 to 71561. [2024-11-18 14:02:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71561 states, 55042 states have (on average 1.58773300388794) internal successors, (87392), 57115 states have internal predecessors, (87392), 12833 states have call successors, (12833), 3622 states have call predecessors, (12833), 3685 states have return successors, (28065), 12871 states have call predecessors, (28065), 12767 states have call successors, (28065) [2024-11-18 14:02:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71561 states to 71561 states and 128290 transitions. [2024-11-18 14:02:51,006 INFO L78 Accepts]: Start accepts. Automaton has 71561 states and 128290 transitions. Word has length 156 [2024-11-18 14:02:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:51,007 INFO L471 AbstractCegarLoop]: Abstraction has 71561 states and 128290 transitions. [2024-11-18 14:02:51,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:02:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 71561 states and 128290 transitions. [2024-11-18 14:02:51,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 14:02:51,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:51,017 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:51,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:02:51,017 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:51,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash -59088784, now seen corresponding path program 1 times [2024-11-18 14:02:51,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:51,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763817618] [2024-11-18 14:02:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:51,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:02:51,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763817618] [2024-11-18 14:02:51,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763817618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:51,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:51,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650538796] [2024-11-18 14:02:51,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:51,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:51,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:51,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:51,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:51,208 INFO L87 Difference]: Start difference. First operand 71561 states and 128290 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:02:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:56,839 INFO L93 Difference]: Finished difference Result 143744 states and 268017 transitions. [2024-11-18 14:02:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:56,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-11-18 14:02:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:57,388 INFO L225 Difference]: With dead ends: 143744 [2024-11-18 14:02:57,389 INFO L226 Difference]: Without dead ends: 72201 [2024-11-18 14:02:58,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:58,305 INFO L432 NwaCegarLoop]: 843 mSDtfsCounter, 10 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:58,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2507 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72201 states. [2024-11-18 14:03:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72201 to 71945. [2024-11-18 14:03:01,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71945 states, 55394 states have (on average 1.58457594685345) internal successors, (87776), 57467 states have internal predecessors, (87776), 12833 states have call successors, (12833), 3686 states have call predecessors, (12833), 3717 states have return successors, (28001), 12839 states have call predecessors, (28001), 12767 states have call successors, (28001) [2024-11-18 14:03:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71945 states to 71945 states and 128610 transitions. [2024-11-18 14:03:02,390 INFO L78 Accepts]: Start accepts. Automaton has 71945 states and 128610 transitions. Word has length 157 [2024-11-18 14:03:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:02,390 INFO L471 AbstractCegarLoop]: Abstraction has 71945 states and 128610 transitions. [2024-11-18 14:03:02,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:03:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 71945 states and 128610 transitions. [2024-11-18 14:03:02,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 14:03:02,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:02,409 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:02,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:03:02,410 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:02,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1008064641, now seen corresponding path program 1 times [2024-11-18 14:03:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:02,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953147473] [2024-11-18 14:03:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 14:03:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953147473] [2024-11-18 14:03:02,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953147473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191457166] [2024-11-18 14:03:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:02,791 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:02,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:03:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:03,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:03:03,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 14:03:03,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191457166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:03,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:03,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-18 14:03:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982032278] [2024-11-18 14:03:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:03,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:03:03,570 INFO L87 Difference]: Start difference. First operand 71945 states and 128610 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-18 14:03:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:10,228 INFO L93 Difference]: Finished difference Result 176001 states and 328159 transitions. [2024-11-18 14:03:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:10,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 168 [2024-11-18 14:03:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:11,716 INFO L225 Difference]: With dead ends: 176001 [2024-11-18 14:03:11,716 INFO L226 Difference]: Without dead ends: 104026 [2024-11-18 14:03:12,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:03:12,500 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 845 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:12,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 3935 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:03:12,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104026 states. [2024-11-18 14:03:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104026 to 103818. [2024-11-18 14:03:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103818 states, 80125 states have (on average 1.5665023400936038) internal successors, (125516), 82894 states have internal predecessors, (125516), 18105 states have call successors, (18105), 5588 states have call predecessors, (18105), 5587 states have return successors, (41665), 17983 states have call predecessors, (41665), 18023 states have call successors, (41665) [2024-11-18 14:03:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103818 states to 103818 states and 185286 transitions. [2024-11-18 14:03:18,338 INFO L78 Accepts]: Start accepts. Automaton has 103818 states and 185286 transitions. Word has length 168 [2024-11-18 14:03:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:18,339 INFO L471 AbstractCegarLoop]: Abstraction has 103818 states and 185286 transitions. [2024-11-18 14:03:18,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-18 14:03:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 103818 states and 185286 transitions. [2024-11-18 14:03:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-18 14:03:18,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:18,354 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:18,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:03:18,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:18,559 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:18,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1303210476, now seen corresponding path program 1 times [2024-11-18 14:03:18,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:18,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273348370] [2024-11-18 14:03:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:18,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 14:03:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273348370] [2024-11-18 14:03:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273348370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518099360] [2024-11-18 14:03:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:18,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:18,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:18,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:18,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:03:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:19,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:03:19,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:03:19,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:19,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518099360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:19,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:19,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-18 14:03:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129486663] [2024-11-18 14:03:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:19,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:03:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:03:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:03:19,369 INFO L87 Difference]: Start difference. First operand 103818 states and 185286 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25)