./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:52:15,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:52:15,481 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 22:52:15,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:52:15,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:52:15,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:52:15,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:52:15,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:52:15,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:52:15,517 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:52:15,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:52:15,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:52:15,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:52:15,519 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:52:15,519 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:52:15,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:52:15,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:52:15,520 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 22:52:15,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:52:15,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 22:52:15,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:52:15,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:52:15,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:52:15,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:52:15,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 22:52:15,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:52:15,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:52:15,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:52:15,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:52:15,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:52:15,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:52:15,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:52:15,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:52:15,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:52:15,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:52:15,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:52:15,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:52:15,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:52:15,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:52:15,526 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:52:15,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:52:15,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:52:15,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 22:52:15,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:52:15,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:52:15,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:52:15,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:52:15,800 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:52:15,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2023-11-22 22:52:16,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:52:17,214 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:52:17,218 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2023-11-22 22:52:17,236 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f464d036e/f3b7fb1e3c654bf6bb7848be244670c7/FLAGd83925a06 [2023-11-22 22:52:17,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f464d036e/f3b7fb1e3c654bf6bb7848be244670c7 [2023-11-22 22:52:17,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:52:17,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:52:17,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:52:17,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:52:17,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:52:17,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d02eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17, skipping insertion in model container [2023-11-22 22:52:17,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,320 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:52:17,660 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2023-11-22 22:52:17,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:52:17,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:52:17,734 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-22 22:52:17,742 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2023-11-22 22:52:17,742 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2023-11-22 22:52:17,745 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2023-11-22 22:52:17,745 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2023-11-22 22:52:17,746 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2023-11-22 22:52:17,746 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2023-11-22 22:52:17,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2023-11-22 22:52:17,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2023-11-22 22:52:17,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2023-11-22 22:52:17,786 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2023-11-22 22:52:17,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:52:17,819 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:52:17,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17 WrapperNode [2023-11-22 22:52:17,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:52:17,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:52:17,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:52:17,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:52:17,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,885 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 861 [2023-11-22 22:52:17,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:52:17,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:52:17,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:52:17,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:52:17,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:52:17,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:52:17,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:52:17,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:52:17,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (1/1) ... [2023-11-22 22:52:17,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:52:17,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:18,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 22:52:18,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 22:52:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-22 22:52:18,044 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-22 22:52:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:52:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-22 22:52:18,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-22 22:52:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-22 22:52:18,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-22 22:52:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-22 22:52:18,045 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-22 22:52:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-22 22:52:18,045 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-22 22:52:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-22 22:52:18,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-22 22:52:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-22 22:52:18,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-22 22:52:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-22 22:52:18,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-22 22:52:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-22 22:52:18,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-22 22:52:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-22 22:52:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-22 22:52:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-22 22:52:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-22 22:52:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-22 22:52:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-22 22:52:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-22 22:52:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-22 22:52:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-22 22:52:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-22 22:52:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-22 22:52:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-22 22:52:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-22 22:52:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-22 22:52:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-22 22:52:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-22 22:52:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-22 22:52:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-22 22:52:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-22 22:52:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-22 22:52:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-22 22:52:18,049 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-22 22:52:18,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 22:52:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-22 22:52:18,050 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-22 22:52:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-22 22:52:18,050 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-22 22:52:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-22 22:52:18,050 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-22 22:52:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-22 22:52:18,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-22 22:52:18,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:52:18,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:52:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-22 22:52:18,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-22 22:52:18,201 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:52:18,202 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:52:18,906 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:52:19,011 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:52:19,011 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 22:52:19,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:52:19 BoogieIcfgContainer [2023-11-22 22:52:19,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:52:19,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:52:19,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:52:19,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:52:19,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:52:17" (1/3) ... [2023-11-22 22:52:19,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f7fdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:52:19, skipping insertion in model container [2023-11-22 22:52:19,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:52:17" (2/3) ... [2023-11-22 22:52:19,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f7fdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:52:19, skipping insertion in model container [2023-11-22 22:52:19,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:52:19" (3/3) ... [2023-11-22 22:52:19,018 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2023-11-22 22:52:19,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:52:19,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:52:19,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:52:19,084 INFO L357 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, mHoare=true, 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;@398b1047, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:52:19,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:52:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 452 states have (on average 1.7278761061946903) internal successors, (781), 470 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-22 22:52:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 22:52:19,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:19,129 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:19,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:19,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash -11043965, now seen corresponding path program 1 times [2023-11-22 22:52:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448502773] [2023-11-22 22:52:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:19,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 22:52:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:52:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 22:52:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 22:52:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 22:52:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:52:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 22:52:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 22:52:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 22:52:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 22:52:19,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:19,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448502773] [2023-11-22 22:52:19,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448502773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:19,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546288843] [2023-11-22 22:52:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:19,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:19,788 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) [2023-11-22 22:52:19,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 22:52:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 22:52:20,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 22:52:20,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546288843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:20,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:20,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-11-22 22:52:20,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954369584] [2023-11-22 22:52:20,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:20,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 22:52:20,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 22:52:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:20,099 INFO L87 Difference]: Start difference. First operand has 579 states, 452 states have (on average 1.7278761061946903) internal successors, (781), 470 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:20,192 INFO L93 Difference]: Finished difference Result 1142 states and 1951 transitions. [2023-11-22 22:52:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 22:52:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 22:52:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:20,206 INFO L225 Difference]: With dead ends: 1142 [2023-11-22 22:52:20,206 INFO L226 Difference]: Without dead ends: 573 [2023-11-22 22:52:20,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:20,219 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:20,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 953 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-11-22 22:52:20,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2023-11-22 22:52:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.7037861915367483) internal successors, (765), 465 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-22 22:52:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 962 transitions. [2023-11-22 22:52:20,325 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 962 transitions. Word has length 103 [2023-11-22 22:52:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:20,327 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 962 transitions. [2023-11-22 22:52:20,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 962 transitions. [2023-11-22 22:52:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 22:52:20,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:20,335 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:20,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:20,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 22:52:20,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:20,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1509033501, now seen corresponding path program 1 times [2023-11-22 22:52:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:20,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792658554] [2023-11-22 22:52:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:20,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 22:52:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:52:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 22:52:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 22:52:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 22:52:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:52:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 22:52:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 22:52:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 22:52:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 22:52:20,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:20,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792658554] [2023-11-22 22:52:20,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792658554] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:20,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36314296] [2023-11-22 22:52:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:20,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:20,892 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) [2023-11-22 22:52:20,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 22:52:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:52:21,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 22:52:21,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36314296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-22 22:52:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025371285] [2023-11-22 22:52:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:21,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:52:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:21,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:52:21,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:52:21,125 INFO L87 Difference]: Start difference. First operand 573 states and 962 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:21,251 INFO L93 Difference]: Finished difference Result 1684 states and 2867 transitions. [2023-11-22 22:52:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:52:21,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 22:52:21,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:21,257 INFO L225 Difference]: With dead ends: 1684 [2023-11-22 22:52:21,257 INFO L226 Difference]: Without dead ends: 1126 [2023-11-22 22:52:21,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:52:21,261 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 956 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:21,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1926 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-22 22:52:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1117. [2023-11-22 22:52:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 883 states have (on average 1.7112117780294451) internal successors, (1511), 912 states have internal predecessors, (1511), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 22:52:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1895 transitions. [2023-11-22 22:52:21,302 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1895 transitions. Word has length 103 [2023-11-22 22:52:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:21,303 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1895 transitions. [2023-11-22 22:52:21,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1895 transitions. [2023-11-22 22:52:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 22:52:21,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:21,307 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:21,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:21,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-22 22:52:21,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:21,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2084333921, now seen corresponding path program 1 times [2023-11-22 22:52:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:21,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672036852] [2023-11-22 22:52:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 22:52:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:52:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 22:52:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 22:52:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 22:52:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:52:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 22:52:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 22:52:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 22:52:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 22:52:21,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:21,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672036852] [2023-11-22 22:52:21,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672036852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:21,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132966954] [2023-11-22 22:52:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:21,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:21,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:21,860 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) [2023-11-22 22:52:21,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 22:52:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:52:22,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 22:52:22,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:22,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132966954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:22,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:22,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 22:52:22,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324841500] [2023-11-22 22:52:22,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:22,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:52:22,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:52:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:52:22,136 INFO L87 Difference]: Start difference. First operand 1117 states and 1895 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:22,229 INFO L93 Difference]: Finished difference Result 2240 states and 3803 transitions. [2023-11-22 22:52:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:52:22,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 22:52:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:22,234 INFO L225 Difference]: With dead ends: 2240 [2023-11-22 22:52:22,235 INFO L226 Difference]: Without dead ends: 1126 [2023-11-22 22:52:22,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:52:22,240 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 26 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:22,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2787 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-22 22:52:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2023-11-22 22:52:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 891 states have (on average 1.7115600448933783) internal successors, (1525), 920 states have internal predecessors, (1525), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 22:52:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1909 transitions. [2023-11-22 22:52:22,272 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1909 transitions. Word has length 103 [2023-11-22 22:52:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:22,273 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1909 transitions. [2023-11-22 22:52:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1909 transitions. [2023-11-22 22:52:22,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-22 22:52:22,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:22,276 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:22,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:22,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:22,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:22,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2119825341, now seen corresponding path program 1 times [2023-11-22 22:52:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:22,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019043488] [2023-11-22 22:52:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 22:52:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 22:52:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 22:52:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:52:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 22:52:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 22:52:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 22:52:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 22:52:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 22:52:22,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:22,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019043488] [2023-11-22 22:52:22,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019043488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:22,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144847917] [2023-11-22 22:52:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:22,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:22,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:22,805 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) [2023-11-22 22:52:22,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 22:52:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:52:23,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:23,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144847917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:23,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 22:52:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221120600] [2023-11-22 22:52:23,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:23,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:52:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:52:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:52:23,055 INFO L87 Difference]: Start difference. First operand 1126 states and 1909 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:23,254 INFO L93 Difference]: Finished difference Result 2291 states and 3897 transitions. [2023-11-22 22:52:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:52:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-11-22 22:52:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:23,259 INFO L225 Difference]: With dead ends: 2291 [2023-11-22 22:52:23,260 INFO L226 Difference]: Without dead ends: 1170 [2023-11-22 22:52:23,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:52:23,264 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 168 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:23,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2633 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:52:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-22 22:52:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1170. [2023-11-22 22:52:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 934 states have (on average 1.721627408993576) internal successors, (1608), 963 states have internal predecessors, (1608), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 22:52:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1992 transitions. [2023-11-22 22:52:23,293 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1992 transitions. Word has length 105 [2023-11-22 22:52:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1992 transitions. [2023-11-22 22:52:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1992 transitions. [2023-11-22 22:52:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-22 22:52:23,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:23,297 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:23,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-22 22:52:23,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:23,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:23,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:23,510 INFO L85 PathProgramCache]: Analyzing trace with hash 881188777, now seen corresponding path program 1 times [2023-11-22 22:52:23,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:23,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626223638] [2023-11-22 22:52:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:23,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 22:52:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 22:52:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 22:52:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 22:52:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 22:52:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 22:52:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 22:52:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 22:52:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 22:52:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626223638] [2023-11-22 22:52:23,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626223638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126003079] [2023-11-22 22:52:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:23,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:23,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:23,795 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) [2023-11-22 22:52:23,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 22:52:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:52:24,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:24,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:24,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126003079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:24,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:24,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 22:52:24,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184043279] [2023-11-22 22:52:24,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:24,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:52:24,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:52:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:52:24,085 INFO L87 Difference]: Start difference. First operand 1170 states and 1992 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:24,216 INFO L93 Difference]: Finished difference Result 2368 states and 4029 transitions. [2023-11-22 22:52:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:52:24,216 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-11-22 22:52:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:24,221 INFO L225 Difference]: With dead ends: 2368 [2023-11-22 22:52:24,221 INFO L226 Difference]: Without dead ends: 1203 [2023-11-22 22:52:24,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-22 22:52:24,226 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 113 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5499 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:24,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5499 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-22 22:52:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1182. [2023-11-22 22:52:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 943 states have (on average 1.7200424178154825) internal successors, (1622), 974 states have internal predecessors, (1622), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-22 22:52:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 2012 transitions. [2023-11-22 22:52:24,256 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 2012 transitions. Word has length 107 [2023-11-22 22:52:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:24,256 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 2012 transitions. [2023-11-22 22:52:24,256 INFO L496 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2012 transitions. [2023-11-22 22:52:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-22 22:52:24,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:24,259 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:24,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:24,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:24,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:24,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1751476944, now seen corresponding path program 1 times [2023-11-22 22:52:24,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:24,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802720978] [2023-11-22 22:52:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:24,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 22:52:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 22:52:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 22:52:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 22:52:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 22:52:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 22:52:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 22:52:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:52:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:24,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:24,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802720978] [2023-11-22 22:52:24,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802720978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:24,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165917197] [2023-11-22 22:52:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:24,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:24,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:24,743 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) [2023-11-22 22:52:24,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 22:52:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:24,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:52:24,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:25,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:25,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165917197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:25,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:25,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 22:52:25,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136357120] [2023-11-22 22:52:25,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:25,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:52:25,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:25,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:52:25,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:52:25,037 INFO L87 Difference]: Start difference. First operand 1182 states and 2012 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:25,165 INFO L93 Difference]: Finished difference Result 2386 states and 4058 transitions. [2023-11-22 22:52:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:52:25,165 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-11-22 22:52:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:25,170 INFO L225 Difference]: With dead ends: 2386 [2023-11-22 22:52:25,170 INFO L226 Difference]: Without dead ends: 1211 [2023-11-22 22:52:25,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:52:25,175 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 124 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5487 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:25,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5487 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-11-22 22:52:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1182. [2023-11-22 22:52:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 943 states have (on average 1.7200424178154825) internal successors, (1622), 974 states have internal predecessors, (1622), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-22 22:52:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 2012 transitions. [2023-11-22 22:52:25,202 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 2012 transitions. Word has length 108 [2023-11-22 22:52:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:25,203 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 2012 transitions. [2023-11-22 22:52:25,203 INFO L496 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2012 transitions. [2023-11-22 22:52:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-22 22:52:25,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:25,206 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:25,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:25,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:25,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:25,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1592956374, now seen corresponding path program 1 times [2023-11-22 22:52:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:25,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409498578] [2023-11-22 22:52:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 22:52:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 22:52:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 22:52:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 22:52:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 22:52:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 22:52:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 22:52:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 22:52:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:52:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 22:52:25,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409498578] [2023-11-22 22:52:25,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409498578] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233872422] [2023-11-22 22:52:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:25,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:25,610 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) [2023-11-22 22:52:25,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 22:52:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:25,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:52:25,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 22:52:25,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:25,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233872422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:25,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:25,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 22:52:25,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138815465] [2023-11-22 22:52:25,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:25,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:52:25,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:25,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:52:25,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:52:25,875 INFO L87 Difference]: Start difference. First operand 1182 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:25,960 INFO L93 Difference]: Finished difference Result 2374 states and 4038 transitions. [2023-11-22 22:52:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:52:25,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-11-22 22:52:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:25,966 INFO L225 Difference]: With dead ends: 2374 [2023-11-22 22:52:25,966 INFO L226 Difference]: Without dead ends: 1193 [2023-11-22 22:52:25,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:52:25,971 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 20 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:25,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2788 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-11-22 22:52:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1191. [2023-11-22 22:52:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 22:52:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-22 22:52:25,999 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 108 [2023-11-22 22:52:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:25,999 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-22 22:52:25,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-22 22:52:26,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-22 22:52:26,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:26,003 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:26,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:26,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:26,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:26,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash -411138331, now seen corresponding path program 1 times [2023-11-22 22:52:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481932894] [2023-11-22 22:52:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:26,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 22:52:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 22:52:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 22:52:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 22:52:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 22:52:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 22:52:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 22:52:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:52:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:26,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:26,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481932894] [2023-11-22 22:52:26,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481932894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:26,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842141040] [2023-11-22 22:52:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:26,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:26,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:26,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:26,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 22:52:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:26,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:52:26,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:26,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842141040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:26,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 22:52:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891292895] [2023-11-22 22:52:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:26,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:52:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:52:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:52:26,727 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:26,854 INFO L93 Difference]: Finished difference Result 2395 states and 4053 transitions. [2023-11-22 22:52:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:52:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-22 22:52:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:26,859 INFO L225 Difference]: With dead ends: 2395 [2023-11-22 22:52:26,859 INFO L226 Difference]: Without dead ends: 1222 [2023-11-22 22:52:26,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:52:26,863 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 135 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:26,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5469 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2023-11-22 22:52:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1191. [2023-11-22 22:52:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 22:52:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-22 22:52:26,938 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 109 [2023-11-22 22:52:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:26,938 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-22 22:52:26,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-22 22:52:26,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-22 22:52:26,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:26,942 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:26,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:27,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 22:52:27,154 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:27,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1583551965, now seen corresponding path program 1 times [2023-11-22 22:52:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759627475] [2023-11-22 22:52:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 22:52:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 22:52:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 22:52:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 22:52:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 22:52:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 22:52:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 22:52:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:52:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:27,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:27,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759627475] [2023-11-22 22:52:27,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759627475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:27,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266204309] [2023-11-22 22:52:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:27,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:27,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:27,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 22:52:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:27,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:52:27,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:27,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:27,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266204309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:27,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:27,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 22:52:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108830295] [2023-11-22 22:52:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:27,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:52:27,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:52:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:52:27,687 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:27,867 INFO L93 Difference]: Finished difference Result 2397 states and 4056 transitions. [2023-11-22 22:52:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:52:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-22 22:52:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:27,877 INFO L225 Difference]: With dead ends: 2397 [2023-11-22 22:52:27,877 INFO L226 Difference]: Without dead ends: 1224 [2023-11-22 22:52:27,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:52:27,882 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 131 mSDsluCounter, 5445 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6368 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:27,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6368 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-22 22:52:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1191. [2023-11-22 22:52:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 22:52:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-22 22:52:27,907 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 109 [2023-11-22 22:52:27,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:27,907 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-22 22:52:27,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:27,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-22 22:52:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-22 22:52:27,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:27,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:27,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:28,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:28,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:28,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash 490820428, now seen corresponding path program 1 times [2023-11-22 22:52:28,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613627868] [2023-11-22 22:52:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:28,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 22:52:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 22:52:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 22:52:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:52:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 22:52:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 22:52:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 22:52:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:52:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613627868] [2023-11-22 22:52:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613627868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482509665] [2023-11-22 22:52:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:28,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:28,439 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:28,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 22:52:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:28,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:52:28,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:28,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482509665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:28,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:28,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 22:52:28,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544748601] [2023-11-22 22:52:28,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:28,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:52:28,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:28,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:52:28,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:52:28,723 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:28,911 INFO L93 Difference]: Finished difference Result 2397 states and 4056 transitions. [2023-11-22 22:52:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:52:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-11-22 22:52:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:28,915 INFO L225 Difference]: With dead ends: 2397 [2023-11-22 22:52:28,915 INFO L226 Difference]: Without dead ends: 1224 [2023-11-22 22:52:28,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:52:28,919 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 141 mSDsluCounter, 5433 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:28,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6356 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-22 22:52:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1191. [2023-11-22 22:52:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 22:52:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-22 22:52:28,946 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 110 [2023-11-22 22:52:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:28,946 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-22 22:52:28,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-22 22:52:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-22 22:52:28,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:28,949 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:28,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:29,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 22:52:29,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:29,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:29,162 INFO L85 PathProgramCache]: Analyzing trace with hash 300604446, now seen corresponding path program 1 times [2023-11-22 22:52:29,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:29,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925657643] [2023-11-22 22:52:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:29,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 22:52:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 22:52:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 22:52:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 22:52:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 22:52:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 22:52:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 22:52:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:29,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925657643] [2023-11-22 22:52:29,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925657643] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067333216] [2023-11-22 22:52:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:29,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:29,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:29,409 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:29,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 22:52:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:29,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:52:29,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:29,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067333216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:29,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 22:52:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938895015] [2023-11-22 22:52:29,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:29,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:52:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:52:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:52:29,687 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:29,867 INFO L93 Difference]: Finished difference Result 2389 states and 4042 transitions. [2023-11-22 22:52:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:52:29,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-11-22 22:52:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:29,872 INFO L225 Difference]: With dead ends: 2389 [2023-11-22 22:52:29,872 INFO L226 Difference]: Without dead ends: 1216 [2023-11-22 22:52:29,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:52:29,876 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 151 mSDsluCounter, 5421 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6344 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:29,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6344 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-11-22 22:52:29,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1191. [2023-11-22 22:52:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 22:52:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-22 22:52:29,901 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 111 [2023-11-22 22:52:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:29,901 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-22 22:52:29,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-22 22:52:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-22 22:52:29,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:29,904 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:29,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:30,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 22:52:30,117 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:30,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1296974720, now seen corresponding path program 1 times [2023-11-22 22:52:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:30,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042612852] [2023-11-22 22:52:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 22:52:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 22:52:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 22:52:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 22:52:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 22:52:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 22:52:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 22:52:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 22:52:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 22:52:30,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:30,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042612852] [2023-11-22 22:52:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042612852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54754249] [2023-11-22 22:52:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:30,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:30,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:30,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:30,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 22:52:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:52:30,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 22:52:30,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:30,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54754249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:30,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:30,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 22:52:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397425804] [2023-11-22 22:52:30,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:30,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:52:30,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:30,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:52:30,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:52:30,557 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:30,624 INFO L93 Difference]: Finished difference Result 2353 states and 3989 transitions. [2023-11-22 22:52:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:52:30,624 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2023-11-22 22:52:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:30,632 INFO L225 Difference]: With dead ends: 2353 [2023-11-22 22:52:30,632 INFO L226 Difference]: Without dead ends: 1191 [2023-11-22 22:52:30,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:52:30,636 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 35 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:30,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2786 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2023-11-22 22:52:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2023-11-22 22:52:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7055730809674028) internal successors, (1622), 982 states have internal predecessors, (1622), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 22:52:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2011 transitions. [2023-11-22 22:52:30,662 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2011 transitions. Word has length 111 [2023-11-22 22:52:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:30,663 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2011 transitions. [2023-11-22 22:52:30,663 INFO L496 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2011 transitions. [2023-11-22 22:52:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 22:52:30,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:30,666 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:30,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:30,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 22:52:30,879 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:30,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:30,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1745124619, now seen corresponding path program 1 times [2023-11-22 22:52:30,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:30,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594178101] [2023-11-22 22:52:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:30,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 22:52:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 22:52:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 22:52:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 22:52:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 22:52:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 22:52:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 22:52:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 22:52:31,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:31,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594178101] [2023-11-22 22:52:31,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594178101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:31,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26997820] [2023-11-22 22:52:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:31,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:31,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:31,116 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:31,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 22:52:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:52:31,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 22:52:31,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26997820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:31,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:31,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-22 22:52:31,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769026933] [2023-11-22 22:52:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:31,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:52:31,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:52:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:52:31,380 INFO L87 Difference]: Start difference. First operand 1191 states and 2011 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:31,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:31,518 INFO L93 Difference]: Finished difference Result 2349 states and 3980 transitions. [2023-11-22 22:52:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:52:31,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-11-22 22:52:31,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:31,523 INFO L225 Difference]: With dead ends: 2349 [2023-11-22 22:52:31,523 INFO L226 Difference]: Without dead ends: 1243 [2023-11-22 22:52:31,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:52:31,527 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 239 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:31,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2622 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2023-11-22 22:52:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1235. [2023-11-22 22:52:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 994 states have (on average 1.715291750503018) internal successors, (1705), 1025 states have internal predecessors, (1705), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 22:52:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 2093 transitions. [2023-11-22 22:52:31,553 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 2093 transitions. Word has length 112 [2023-11-22 22:52:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:31,553 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 2093 transitions. [2023-11-22 22:52:31,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:31,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 2093 transitions. [2023-11-22 22:52:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-22 22:52:31,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:31,556 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:31,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:31,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 22:52:31,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:31,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1259957056, now seen corresponding path program 1 times [2023-11-22 22:52:31,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:31,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332883292] [2023-11-22 22:52:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:31,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 22:52:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 22:52:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 22:52:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 22:52:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 22:52:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 22:52:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 22:52:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 22:52:31,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:31,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332883292] [2023-11-22 22:52:31,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332883292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219450525] [2023-11-22 22:52:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:31,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:31,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:31,965 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:32,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 22:52:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:52:32,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:32,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:32,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219450525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:32,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:32,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-22 22:52:32,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937805366] [2023-11-22 22:52:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:32,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:52:32,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:32,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:52:32,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:52:32,291 INFO L87 Difference]: Start difference. First operand 1235 states and 2093 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:32,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:32,421 INFO L93 Difference]: Finished difference Result 2383 states and 4029 transitions. [2023-11-22 22:52:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:52:32,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-11-22 22:52:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:32,427 INFO L225 Difference]: With dead ends: 2383 [2023-11-22 22:52:32,427 INFO L226 Difference]: Without dead ends: 1277 [2023-11-22 22:52:32,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:52:32,432 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 113 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:32,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5494 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-22 22:52:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1247. [2023-11-22 22:52:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 22:52:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-11-22 22:52:32,467 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 113 [2023-11-22 22:52:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:32,468 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-11-22 22:52:32,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-11-22 22:52:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 22:52:32,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:32,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:32,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:32,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:32,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:32,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1299475515, now seen corresponding path program 1 times [2023-11-22 22:52:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407460983] [2023-11-22 22:52:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 22:52:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:52:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 22:52:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 22:52:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 22:52:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 22:52:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 22:52:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 22:52:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407460983] [2023-11-22 22:52:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407460983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112205218] [2023-11-22 22:52:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:32,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:32,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:32,989 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:33,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 22:52:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:52:33,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:33,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:33,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112205218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:33,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-22 22:52:33,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342864943] [2023-11-22 22:52:33,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:33,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:52:33,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:33,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:52:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:52:33,282 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:33,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:33,418 INFO L93 Difference]: Finished difference Result 2391 states and 4042 transitions. [2023-11-22 22:52:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:52:33,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-22 22:52:33,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:33,423 INFO L225 Difference]: With dead ends: 2391 [2023-11-22 22:52:33,423 INFO L226 Difference]: Without dead ends: 1285 [2023-11-22 22:52:33,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:52:33,428 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 124 mSDsluCounter, 4555 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5488 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:33,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5488 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-11-22 22:52:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1247. [2023-11-22 22:52:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 22:52:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-11-22 22:52:33,463 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 114 [2023-11-22 22:52:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:33,463 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-11-22 22:52:33,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-11-22 22:52:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 22:52:33,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:33,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:33,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:33,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 22:52:33,680 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:33,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash 401524923, now seen corresponding path program 1 times [2023-11-22 22:52:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285074204] [2023-11-22 22:52:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 22:52:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:52:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 22:52:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 22:52:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 22:52:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 22:52:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 22:52:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 22:52:33,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:33,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285074204] [2023-11-22 22:52:33,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285074204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:33,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453800347] [2023-11-22 22:52:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:33,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:33,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:33,877 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:33,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 22:52:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:52:34,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:34,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:34,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453800347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:34,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:34,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-22 22:52:34,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478807422] [2023-11-22 22:52:34,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:34,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:52:34,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:52:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:52:34,161 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:34,339 INFO L93 Difference]: Finished difference Result 2393 states and 4044 transitions. [2023-11-22 22:52:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:52:34,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-22 22:52:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:34,344 INFO L225 Difference]: With dead ends: 2393 [2023-11-22 22:52:34,344 INFO L226 Difference]: Without dead ends: 1287 [2023-11-22 22:52:34,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:52:34,347 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 132 mSDsluCounter, 5440 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:34,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6362 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2023-11-22 22:52:34,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1247. [2023-11-22 22:52:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 22:52:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-11-22 22:52:34,372 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 114 [2023-11-22 22:52:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:34,372 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-11-22 22:52:34,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-11-22 22:52:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 22:52:34,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:34,375 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:34,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:34,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 22:52:34,588 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:34,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash 621339121, now seen corresponding path program 1 times [2023-11-22 22:52:34,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:34,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290309518] [2023-11-22 22:52:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:34,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 22:52:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 22:52:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:52:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 22:52:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 22:52:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 22:52:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 22:52:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 22:52:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 22:52:34,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290309518] [2023-11-22 22:52:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290309518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470173858] [2023-11-22 22:52:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:34,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:34,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:34,840 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:34,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 22:52:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 22:52:35,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 22:52:35,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:35,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470173858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:35,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:35,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 22:52:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836932061] [2023-11-22 22:52:35,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:35,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:52:35,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:52:35,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:52:35,166 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:35,242 INFO L93 Difference]: Finished difference Result 2425 states and 4108 transitions. [2023-11-22 22:52:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:52:35,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-11-22 22:52:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:35,247 INFO L225 Difference]: With dead ends: 2425 [2023-11-22 22:52:35,247 INFO L226 Difference]: Without dead ends: 1247 [2023-11-22 22:52:35,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:52:35,250 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 10 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:35,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2788 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2023-11-22 22:52:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2023-11-22 22:52:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7108673978065803) internal successors, (1716), 1036 states have internal predecessors, (1716), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 22:52:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2108 transitions. [2023-11-22 22:52:35,273 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2108 transitions. Word has length 114 [2023-11-22 22:52:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:35,273 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2108 transitions. [2023-11-22 22:52:35,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2108 transitions. [2023-11-22 22:52:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-22 22:52:35,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:35,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:35,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:35,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 22:52:35,489 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:35,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash 801152322, now seen corresponding path program 1 times [2023-11-22 22:52:35,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:35,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114222979] [2023-11-22 22:52:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 22:52:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 22:52:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 22:52:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 22:52:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 22:52:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 22:52:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 22:52:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 22:52:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114222979] [2023-11-22 22:52:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114222979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15812742] [2023-11-22 22:52:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:35,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:35,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:35,696 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:35,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 22:52:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:35,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:52:35,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 22:52:35,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15812742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:35,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:35,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-22 22:52:35,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470752031] [2023-11-22 22:52:35,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:35,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:52:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:52:35,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:52:35,976 INFO L87 Difference]: Start difference. First operand 1247 states and 2108 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:36,186 INFO L93 Difference]: Finished difference Result 2385 states and 4028 transitions. [2023-11-22 22:52:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:52:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-22 22:52:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:36,191 INFO L225 Difference]: With dead ends: 2385 [2023-11-22 22:52:36,191 INFO L226 Difference]: Without dead ends: 1279 [2023-11-22 22:52:36,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:52:36,194 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 142 mSDsluCounter, 5419 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6339 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:36,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6339 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:52:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-22 22:52:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1247. [2023-11-22 22:52:36,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7108673978065803) internal successors, (1716), 1036 states have internal predecessors, (1716), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 22:52:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2108 transitions. [2023-11-22 22:52:36,247 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2108 transitions. Word has length 115 [2023-11-22 22:52:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:36,247 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2108 transitions. [2023-11-22 22:52:36,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2108 transitions. [2023-11-22 22:52:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-22 22:52:36,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:36,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:36,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:36,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 22:52:36,463 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:36,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash -177939296, now seen corresponding path program 1 times [2023-11-22 22:52:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:36,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551719581] [2023-11-22 22:52:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 22:52:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 22:52:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 22:52:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 22:52:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 22:52:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 22:52:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 22:52:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 22:52:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 22:52:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 22:52:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551719581] [2023-11-22 22:52:36,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551719581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539714912] [2023-11-22 22:52:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:36,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:36,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:36,707 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:36,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 22:52:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:36,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 22:52:36,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 22:52:36,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:36,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539714912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:36,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-22 22:52:36,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387780633] [2023-11-22 22:52:36,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:36,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:52:36,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:52:36,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:36,953 INFO L87 Difference]: Start difference. First operand 1247 states and 2108 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:37,016 INFO L93 Difference]: Finished difference Result 2476 states and 4197 transitions. [2023-11-22 22:52:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:52:37,017 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-11-22 22:52:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:37,029 INFO L225 Difference]: With dead ends: 2476 [2023-11-22 22:52:37,029 INFO L226 Difference]: Without dead ends: 1213 [2023-11-22 22:52:37,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:52:37,032 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 13 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:37,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2787 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:52:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-11-22 22:52:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2023-11-22 22:52:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 972 states have (on average 1.6975308641975309) internal successors, (1650), 1003 states have internal predecessors, (1650), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 22:52:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2038 transitions. [2023-11-22 22:52:37,059 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2038 transitions. Word has length 116 [2023-11-22 22:52:37,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:37,060 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 2038 transitions. [2023-11-22 22:52:37,060 INFO L496 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2038 transitions. [2023-11-22 22:52:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-22 22:52:37,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:37,063 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 22:52:37,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:37,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:37,275 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:37,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash -629606631, now seen corresponding path program 1 times [2023-11-22 22:52:37,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:37,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588593933] [2023-11-22 22:52:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 22:52:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 22:52:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 22:52:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 22:52:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 22:52:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 22:52:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:52:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 22:52:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 22:52:37,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:37,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588593933] [2023-11-22 22:52:37,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588593933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:52:37,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137593696] [2023-11-22 22:52:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:37,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:37,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:52:37,520 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:52:37,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 22:52:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:37,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 22:52:37,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:52:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 22:52:37,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:52:37,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137593696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:37,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:52:37,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-11-22 22:52:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333406211] [2023-11-22 22:52:37,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:37,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:52:37,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:37,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:52:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:52:37,774 INFO L87 Difference]: Start difference. First operand 1213 states and 2038 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:37,891 INFO L93 Difference]: Finished difference Result 2432 states and 4084 transitions. [2023-11-22 22:52:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:52:37,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-11-22 22:52:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:37,895 INFO L225 Difference]: With dead ends: 2432 [2023-11-22 22:52:37,895 INFO L226 Difference]: Without dead ends: 1232 [2023-11-22 22:52:37,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:52:37,898 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 134 mSDsluCounter, 4546 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5486 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:37,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5486 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:52:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-11-22 22:52:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1206. [2023-11-22 22:52:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 965 states have (on average 1.6932642487046632) internal successors, (1634), 996 states have internal predecessors, (1634), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 22:52:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2022 transitions. [2023-11-22 22:52:37,925 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2022 transitions. Word has length 117 [2023-11-22 22:52:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:37,925 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2022 transitions. [2023-11-22 22:52:37,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 22:52:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2022 transitions. [2023-11-22 22:52:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-22 22:52:37,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:37,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:37,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 22:52:38,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:52:38,141 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:38,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1803846594, now seen corresponding path program 1 times [2023-11-22 22:52:38,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:38,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765173225] [2023-11-22 22:52:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:52:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 22:52:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 22:52:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 22:52:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 22:52:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 22:52:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:52:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 22:52:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 22:52:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765173225] [2023-11-22 22:52:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765173225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:38,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:38,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:52:38,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669182360] [2023-11-22 22:52:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:38,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:52:38,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:52:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:38,388 INFO L87 Difference]: Start difference. First operand 1206 states and 2022 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:41,556 INFO L93 Difference]: Finished difference Result 2807 states and 4747 transitions. [2023-11-22 22:52:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:52:41,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-22 22:52:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:41,564 INFO L225 Difference]: With dead ends: 2807 [2023-11-22 22:52:41,564 INFO L226 Difference]: Without dead ends: 1697 [2023-11-22 22:52:41,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:52:41,567 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1548 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:41,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 1313 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-22 22:52:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-11-22 22:52:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1266. [2023-11-22 22:52:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1011 states have (on average 1.6844708209693373) internal successors, (1703), 1042 states have internal predecessors, (1703), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2023-11-22 22:52:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2124 transitions. [2023-11-22 22:52:41,700 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2124 transitions. Word has length 118 [2023-11-22 22:52:41,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:41,700 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 2124 transitions. [2023-11-22 22:52:41,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:41,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2124 transitions. [2023-11-22 22:52:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-22 22:52:41,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:41,703 INFO L195 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] [2023-11-22 22:52:41,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 22:52:41,703 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:41,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2101313970, now seen corresponding path program 1 times [2023-11-22 22:52:41,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:41,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916002864] [2023-11-22 22:52:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:41,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:52:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 22:52:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 22:52:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 22:52:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 22:52:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 22:52:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 22:52:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:52:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 22:52:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 22:52:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:41,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916002864] [2023-11-22 22:52:41,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916002864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:41,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:41,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:52:41,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938467420] [2023-11-22 22:52:41,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:41,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:52:41,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:41,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:52:41,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:41,886 INFO L87 Difference]: Start difference. First operand 1266 states and 2124 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:44,906 INFO L93 Difference]: Finished difference Result 2894 states and 4887 transitions. [2023-11-22 22:52:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:52:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-22 22:52:44,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:44,912 INFO L225 Difference]: With dead ends: 2894 [2023-11-22 22:52:44,912 INFO L226 Difference]: Without dead ends: 1633 [2023-11-22 22:52:44,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:52:44,916 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1486 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:44,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1277 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-22 22:52:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-22 22:52:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1239. [2023-11-22 22:52:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 987 states have (on average 1.67983789260385) internal successors, (1658), 1016 states have internal predecessors, (1658), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2023-11-22 22:52:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2075 transitions. [2023-11-22 22:52:45,022 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2075 transitions. Word has length 118 [2023-11-22 22:52:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:45,022 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 2075 transitions. [2023-11-22 22:52:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 22:52:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2075 transitions. [2023-11-22 22:52:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-22 22:52:45,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:45,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 22:52:45,025 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:45,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1730527367, now seen corresponding path program 1 times [2023-11-22 22:52:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992564204] [2023-11-22 22:52:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:45,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:52:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:52:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:52:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:52:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 22:52:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 22:52:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 22:52:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:52:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 22:52:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:52:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992564204] [2023-11-22 22:52:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992564204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:45,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:52:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992078996] [2023-11-22 22:52:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:52:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:52:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:45,221 INFO L87 Difference]: Start difference. First operand 1239 states and 2075 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 22:52:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:50,421 INFO L93 Difference]: Finished difference Result 4184 states and 7318 transitions. [2023-11-22 22:52:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 22:52:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 119 [2023-11-22 22:52:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:50,433 INFO L225 Difference]: With dead ends: 4184 [2023-11-22 22:52:50,433 INFO L226 Difference]: Without dead ends: 3026 [2023-11-22 22:52:50,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:52:50,438 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 4428 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 1352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 5378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1352 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:50,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 1435 Invalid, 5378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1352 Valid, 4026 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-22 22:52:50,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2023-11-22 22:52:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2352. [2023-11-22 22:52:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 1871 states have (on average 1.675040085515767) internal successors, (3134), 1927 states have internal predecessors, (3134), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (455), 376 states have call predecessors, (455), 377 states have call successors, (455) [2023-11-22 22:52:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3972 transitions. [2023-11-22 22:52:50,696 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3972 transitions. Word has length 119 [2023-11-22 22:52:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:50,696 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3972 transitions. [2023-11-22 22:52:50,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 22:52:50,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3972 transitions. [2023-11-22 22:52:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-22 22:52:50,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:50,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:50,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 22:52:50,699 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:50,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash 631725454, now seen corresponding path program 1 times [2023-11-22 22:52:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:50,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847988134] [2023-11-22 22:52:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:52:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:52:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:52:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:52:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 22:52:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 22:52:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 22:52:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 22:52:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 22:52:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:52:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847988134] [2023-11-22 22:52:50,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847988134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:50,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:50,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:52:50,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387946959] [2023-11-22 22:52:50,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:50,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:52:50,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:50,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:52:50,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:52:50,891 INFO L87 Difference]: Start difference. First operand 2352 states and 3972 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 22:52:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:52:56,703 INFO L93 Difference]: Finished difference Result 8101 states and 14478 transitions. [2023-11-22 22:52:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 22:52:56,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2023-11-22 22:52:56,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:52:56,760 INFO L225 Difference]: With dead ends: 8101 [2023-11-22 22:52:56,760 INFO L226 Difference]: Without dead ends: 5830 [2023-11-22 22:52:56,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:52:56,789 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 4427 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 4098 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 5406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 4098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:52:56,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 1525 Invalid, 5406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 4098 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-22 22:52:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2023-11-22 22:52:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 4588. [2023-11-22 22:52:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 3647 states have (on average 1.6682204551686317) internal successors, (6084), 3757 states have internal predecessors, (6084), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (987), 740 states have call predecessors, (987), 741 states have call successors, (987) [2023-11-22 22:52:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7822 transitions. [2023-11-22 22:52:57,347 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7822 transitions. Word has length 120 [2023-11-22 22:52:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:52:57,347 INFO L495 AbstractCegarLoop]: Abstraction has 4588 states and 7822 transitions. [2023-11-22 22:52:57,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 22:52:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7822 transitions. [2023-11-22 22:52:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-22 22:52:57,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:52:57,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:52:57,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 22:52:57,351 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:52:57,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:52:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash 889807724, now seen corresponding path program 1 times [2023-11-22 22:52:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:52:57,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242069741] [2023-11-22 22:52:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:52:57,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:52:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:52:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:52:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:52:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:52:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:52:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:52:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:52:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 22:52:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 22:52:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 22:52:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 22:52:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:52:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:52:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:52:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:52:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242069741] [2023-11-22 22:52:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242069741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:52:57,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:52:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 22:52:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958937985] [2023-11-22 22:52:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:52:57,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:52:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:52:57,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:52:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:52:57,612 INFO L87 Difference]: Start difference. First operand 4588 states and 7822 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 22:53:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:04,217 INFO L93 Difference]: Finished difference Result 10410 states and 18083 transitions. [2023-11-22 22:53:04,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 22:53:04,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 121 [2023-11-22 22:53:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:04,233 INFO L225 Difference]: With dead ends: 10410 [2023-11-22 22:53:04,234 INFO L226 Difference]: Without dead ends: 5906 [2023-11-22 22:53:04,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-11-22 22:53:04,246 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 4097 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 5532 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4159 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 6570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 5532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:04,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4159 Valid, 2783 Invalid, 6570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1038 Valid, 5532 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-22 22:53:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2023-11-22 22:53:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 4616. [2023-11-22 22:53:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 3667 states have (on average 1.6645759476411235) internal successors, (6104), 3773 states have internal predecessors, (6104), 751 states have call successors, (751), 186 states have call predecessors, (751), 197 states have return successors, (1003), 752 states have call predecessors, (1003), 741 states have call successors, (1003) [2023-11-22 22:53:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 7858 transitions. [2023-11-22 22:53:04,835 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 7858 transitions. Word has length 121 [2023-11-22 22:53:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:53:04,836 INFO L495 AbstractCegarLoop]: Abstraction has 4616 states and 7858 transitions. [2023-11-22 22:53:04,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 22:53:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 7858 transitions. [2023-11-22 22:53:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-22 22:53:04,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:53:04,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:53:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 22:53:04,839 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:53:04,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:53:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1912628502, now seen corresponding path program 1 times [2023-11-22 22:53:04,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:53:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424076904] [2023-11-22 22:53:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:53:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:53:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:53:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:53:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:53:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:53:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:53:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 22:53:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 22:53:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 22:53:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 22:53:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-22 22:53:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:53:05,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:53:05,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424076904] [2023-11-22 22:53:05,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424076904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:53:05,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:53:05,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 22:53:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627115638] [2023-11-22 22:53:05,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:53:05,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 22:53:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:53:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 22:53:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:53:05,171 INFO L87 Difference]: Start difference. First operand 4616 states and 7858 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:10,629 INFO L93 Difference]: Finished difference Result 10652 states and 18604 transitions. [2023-11-22 22:53:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 22:53:10,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2023-11-22 22:53:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:10,652 INFO L225 Difference]: With dead ends: 10652 [2023-11-22 22:53:10,652 INFO L226 Difference]: Without dead ends: 6120 [2023-11-22 22:53:10,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:53:10,669 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1498 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 6242 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 6642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 6242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:10,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3289 Invalid, 6642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [400 Valid, 6242 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-22 22:53:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2023-11-22 22:53:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 4672. [2023-11-22 22:53:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 3707 states have (on average 1.6574049096304289) internal successors, (6144), 3813 states have internal predecessors, (6144), 751 states have call successors, (751), 186 states have call predecessors, (751), 213 states have return successors, (1043), 768 states have call predecessors, (1043), 741 states have call successors, (1043) [2023-11-22 22:53:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 7938 transitions. [2023-11-22 22:53:11,274 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 7938 transitions. Word has length 125 [2023-11-22 22:53:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:53:11,274 INFO L495 AbstractCegarLoop]: Abstraction has 4672 states and 7938 transitions. [2023-11-22 22:53:11,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 7938 transitions. [2023-11-22 22:53:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-22 22:53:11,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:53:11,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:53:11,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 22:53:11,278 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:53:11,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:53:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1146583673, now seen corresponding path program 1 times [2023-11-22 22:53:11,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:53:11,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314617448] [2023-11-22 22:53:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:53:11,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:53:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:53:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:53:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:53:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:53:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:53:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:53:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 22:53:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:53:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 22:53:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 22:53:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:53:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:53:11,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314617448] [2023-11-22 22:53:11,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314617448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:53:11,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:53:11,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 22:53:11,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030943573] [2023-11-22 22:53:11,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:53:11,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:53:11,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:53:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:53:11,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:53:11,550 INFO L87 Difference]: Start difference. First operand 4672 states and 7938 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:16,460 INFO L93 Difference]: Finished difference Result 10748 states and 18732 transitions. [2023-11-22 22:53:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:53:16,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 126 [2023-11-22 22:53:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:16,477 INFO L225 Difference]: With dead ends: 10748 [2023-11-22 22:53:16,477 INFO L226 Difference]: Without dead ends: 6160 [2023-11-22 22:53:16,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:53:16,490 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1478 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 5422 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 5811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 5422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:16,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 2816 Invalid, 5811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 5422 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-22 22:53:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2023-11-22 22:53:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 4680. [2023-11-22 22:53:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4680 states, 3715 states have (on average 1.6559892328398385) internal successors, (6152), 3813 states have internal predecessors, (6152), 751 states have call successors, (751), 186 states have call predecessors, (751), 213 states have return successors, (1043), 776 states have call predecessors, (1043), 741 states have call successors, (1043) [2023-11-22 22:53:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4680 states to 4680 states and 7946 transitions. [2023-11-22 22:53:17,063 INFO L78 Accepts]: Start accepts. Automaton has 4680 states and 7946 transitions. Word has length 126 [2023-11-22 22:53:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:53:17,064 INFO L495 AbstractCegarLoop]: Abstraction has 4680 states and 7946 transitions. [2023-11-22 22:53:17,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4680 states and 7946 transitions. [2023-11-22 22:53:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-22 22:53:17,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:53:17,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:53:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-22 22:53:17,067 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:53:17,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:53:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash 283527321, now seen corresponding path program 1 times [2023-11-22 22:53:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:53:17,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878413118] [2023-11-22 22:53:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:53:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:53:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:53:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:53:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:53:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:53:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:53:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:53:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 22:53:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:53:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 22:53:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 22:53:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:53:17,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:53:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878413118] [2023-11-22 22:53:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878413118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:53:17,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:53:17,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:53:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179618442] [2023-11-22 22:53:17,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:53:17,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:53:17,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:53:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:53:17,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:53:17,294 INFO L87 Difference]: Start difference. First operand 4680 states and 7946 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:21,019 INFO L93 Difference]: Finished difference Result 10525 states and 18288 transitions. [2023-11-22 22:53:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:53:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 4 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 126 [2023-11-22 22:53:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:21,037 INFO L225 Difference]: With dead ends: 10525 [2023-11-22 22:53:21,037 INFO L226 Difference]: Without dead ends: 5929 [2023-11-22 22:53:21,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:53:21,054 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1472 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:21,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1370 Invalid, 3139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-22 22:53:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2023-11-22 22:53:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 4671. [2023-11-22 22:53:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 3712 states have (on average 1.6554418103448276) internal successors, (6145), 3813 states have internal predecessors, (6145), 745 states have call successors, (745), 186 states have call predecessors, (745), 213 states have return successors, (1028), 767 states have call predecessors, (1028), 735 states have call successors, (1028) [2023-11-22 22:53:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 7918 transitions. [2023-11-22 22:53:21,642 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 7918 transitions. Word has length 126 [2023-11-22 22:53:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:53:21,642 INFO L495 AbstractCegarLoop]: Abstraction has 4671 states and 7918 transitions. [2023-11-22 22:53:21,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 7918 transitions. [2023-11-22 22:53:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-22 22:53:21,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:53:21,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:53:21,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-22 22:53:21,645 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:53:21,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:53:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1358246382, now seen corresponding path program 1 times [2023-11-22 22:53:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:53:21,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280992711] [2023-11-22 22:53:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:53:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:53:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:53:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:53:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:53:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:53:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:53:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 22:53:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:53:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 22:53:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 22:53:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:53:21,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:53:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280992711] [2023-11-22 22:53:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280992711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:53:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:53:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 22:53:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942942564] [2023-11-22 22:53:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:53:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 22:53:21,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:53:21,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 22:53:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:53:21,909 INFO L87 Difference]: Start difference. First operand 4671 states and 7918 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:27,586 INFO L93 Difference]: Finished difference Result 10731 states and 18600 transitions. [2023-11-22 22:53:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 22:53:27,587 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2023-11-22 22:53:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:27,603 INFO L225 Difference]: With dead ends: 10731 [2023-11-22 22:53:27,604 INFO L226 Difference]: Without dead ends: 6144 [2023-11-22 22:53:27,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:53:27,616 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1489 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 6345 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 6741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 6345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:27,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 3251 Invalid, 6741 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [396 Valid, 6345 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-22 22:53:27,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2023-11-22 22:53:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 4673. [2023-11-22 22:53:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 3714 states have (on average 1.6550888529886914) internal successors, (6147), 3813 states have internal predecessors, (6147), 745 states have call successors, (745), 186 states have call predecessors, (745), 213 states have return successors, (1028), 769 states have call predecessors, (1028), 735 states have call successors, (1028) [2023-11-22 22:53:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7920 transitions. [2023-11-22 22:53:28,179 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7920 transitions. Word has length 128 [2023-11-22 22:53:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:53:28,179 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7920 transitions. [2023-11-22 22:53:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:53:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7920 transitions. [2023-11-22 22:53:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-22 22:53:28,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:53:28,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:53:28,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-22 22:53:28,183 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:53:28,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:53:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash 208009996, now seen corresponding path program 1 times [2023-11-22 22:53:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:53:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733445569] [2023-11-22 22:53:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:53:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:53:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:53:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:53:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:53:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:53:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:53:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:53:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 22:53:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 22:53:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 22:53:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:53:28,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:53:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733445569] [2023-11-22 22:53:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733445569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:53:28,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:53:28,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:53:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977647500] [2023-11-22 22:53:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:53:28,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:53:28,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:53:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:53:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:53:28,433 INFO L87 Difference]: Start difference. First operand 4673 states and 7920 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-22 22:53:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:36,636 INFO L93 Difference]: Finished difference Result 16510 states and 28972 transitions. [2023-11-22 22:53:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 22:53:36,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2023-11-22 22:53:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:36,669 INFO L225 Difference]: With dead ends: 16510 [2023-11-22 22:53:36,670 INFO L226 Difference]: Without dead ends: 11921 [2023-11-22 22:53:36,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:53:36,691 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 3904 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 5144 mSolverCounterSat, 1109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 6253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1109 IncrementalHoareTripleChecker+Valid, 5144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:36,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 2105 Invalid, 6253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1109 Valid, 5144 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-22 22:53:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11921 states. [2023-11-22 22:53:37,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11921 to 9593. [2023-11-22 22:53:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 7614 states have (on average 1.6142631993695824) internal successors, (12291), 7807 states have internal predecessors, (12291), 1501 states have call successors, (1501), 410 states have call predecessors, (1501), 477 states have return successors, (2200), 1567 states have call predecessors, (2200), 1483 states have call successors, (2200) [2023-11-22 22:53:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 15992 transitions. [2023-11-22 22:53:38,051 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 15992 transitions. Word has length 137 [2023-11-22 22:53:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:53:38,052 INFO L495 AbstractCegarLoop]: Abstraction has 9593 states and 15992 transitions. [2023-11-22 22:53:38,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-22 22:53:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 15992 transitions. [2023-11-22 22:53:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 22:53:38,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:53:38,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:53:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-22 22:53:38,056 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:53:38,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:53:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 820024711, now seen corresponding path program 1 times [2023-11-22 22:53:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:53:38,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537234128] [2023-11-22 22:53:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:53:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:53:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:53:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:53:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:53:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:53:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:53:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 22:53:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 22:53:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:53:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 22:53:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 22:53:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 22:53:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:53:38,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:53:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537234128] [2023-11-22 22:53:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537234128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:53:38,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:53:38,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:53:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361168554] [2023-11-22 22:53:38,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:53:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:53:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:53:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:53:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:53:38,326 INFO L87 Difference]: Start difference. First operand 9593 states and 15992 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:53:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:43,550 INFO L93 Difference]: Finished difference Result 21203 states and 36668 transitions. [2023-11-22 22:53:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:53:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2023-11-22 22:53:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:43,584 INFO L225 Difference]: With dead ends: 21203 [2023-11-22 22:53:43,584 INFO L226 Difference]: Without dead ends: 11967 [2023-11-22 22:53:43,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:53:43,614 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1463 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:43,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1350 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-22 22:53:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11967 states. [2023-11-22 22:53:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11967 to 9673. [2023-11-22 22:53:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9673 states, 7674 states have (on average 1.608939275475632) internal successors, (12347), 7867 states have internal predecessors, (12347), 1501 states have call successors, (1501), 430 states have call predecessors, (1501), 497 states have return successors, (2216), 1567 states have call predecessors, (2216), 1483 states have call successors, (2216) [2023-11-22 22:53:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9673 states to 9673 states and 16064 transitions. [2023-11-22 22:53:44,917 INFO L78 Accepts]: Start accepts. Automaton has 9673 states and 16064 transitions. Word has length 136 [2023-11-22 22:53:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:53:44,917 INFO L495 AbstractCegarLoop]: Abstraction has 9673 states and 16064 transitions. [2023-11-22 22:53:44,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:53:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 9673 states and 16064 transitions. [2023-11-22 22:53:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-22 22:53:44,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:53:44,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:53:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-22 22:53:44,920 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:53:44,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:53:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1242477841, now seen corresponding path program 1 times [2023-11-22 22:53:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:53:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644559990] [2023-11-22 22:53:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:53:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:53:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:53:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:53:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:53:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:53:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:53:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:53:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 22:53:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:53:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 22:53:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:53:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 22:53:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 22:53:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 22:53:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:53:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:53:45,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:53:45,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644559990] [2023-11-22 22:53:45,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644559990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:53:45,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:53:45,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 22:53:45,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116225682] [2023-11-22 22:53:45,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:53:45,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 22:53:45,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:53:45,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 22:53:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:53:45,262 INFO L87 Difference]: Start difference. First operand 9673 states and 16064 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-22 22:53:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:53:58,933 INFO L93 Difference]: Finished difference Result 34042 states and 59371 transitions. [2023-11-22 22:53:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 22:53:58,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2023-11-22 22:53:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:53:59,009 INFO L225 Difference]: With dead ends: 34042 [2023-11-22 22:53:59,010 INFO L226 Difference]: Without dead ends: 26094 [2023-11-22 22:53:59,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-11-22 22:53:59,041 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 6078 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 10050 mSolverCounterSat, 2080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6088 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 12130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2080 IncrementalHoareTripleChecker+Valid, 10050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:53:59,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6088 Valid, 3547 Invalid, 12130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2080 Valid, 10050 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-22 22:53:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26094 states. [2023-11-22 22:54:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26094 to 19870. [2023-11-22 22:54:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19870 states, 15305 states have (on average 1.5903299575302188) internal successors, (24340), 15809 states have internal predecessors, (24340), 3511 states have call successors, (3511), 806 states have call predecessors, (3511), 1053 states have return successors, (5415), 3718 states have call predecessors, (5415), 3477 states have call successors, (5415) [2023-11-22 22:54:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19870 states to 19870 states and 33266 transitions. [2023-11-22 22:54:02,461 INFO L78 Accepts]: Start accepts. Automaton has 19870 states and 33266 transitions. Word has length 137 [2023-11-22 22:54:02,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:54:02,461 INFO L495 AbstractCegarLoop]: Abstraction has 19870 states and 33266 transitions. [2023-11-22 22:54:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-22 22:54:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 19870 states and 33266 transitions. [2023-11-22 22:54:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 22:54:02,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:54:02,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:54:02,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-22 22:54:02,465 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:54:02,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:54:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 951707353, now seen corresponding path program 1 times [2023-11-22 22:54:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:54:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023698182] [2023-11-22 22:54:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:54:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:54:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:54:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:54:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:54:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:54:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:54:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 22:54:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:54:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 22:54:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 22:54:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 22:54:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:54:02,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:54:02,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023698182] [2023-11-22 22:54:02,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023698182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:54:02,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:54:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:54:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387031531] [2023-11-22 22:54:02,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:54:02,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:54:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:54:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:54:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:54:02,686 INFO L87 Difference]: Start difference. First operand 19870 states and 33266 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:54:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:54:11,127 INFO L93 Difference]: Finished difference Result 41977 states and 72838 transitions. [2023-11-22 22:54:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:54:11,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 4 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 136 [2023-11-22 22:54:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:54:11,205 INFO L225 Difference]: With dead ends: 41977 [2023-11-22 22:54:11,205 INFO L226 Difference]: Without dead ends: 25528 [2023-11-22 22:54:11,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:54:11,262 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1552 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:54:11,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1007 Invalid, 2384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-22 22:54:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25528 states. [2023-11-22 22:54:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25528 to 20822. [2023-11-22 22:54:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20822 states, 16101 states have (on average 1.5832556984038257) internal successors, (25492), 16613 states have internal predecessors, (25492), 3655 states have call successors, (3655), 806 states have call predecessors, (3655), 1065 states have return successors, (5655), 3866 states have call predecessors, (5655), 3621 states have call successors, (5655) [2023-11-22 22:54:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20822 states to 20822 states and 34802 transitions. [2023-11-22 22:54:14,994 INFO L78 Accepts]: Start accepts. Automaton has 20822 states and 34802 transitions. Word has length 136 [2023-11-22 22:54:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:54:14,995 INFO L495 AbstractCegarLoop]: Abstraction has 20822 states and 34802 transitions. [2023-11-22 22:54:14,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:54:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 20822 states and 34802 transitions. [2023-11-22 22:54:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-22 22:54:14,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:54:14,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:54:14,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-22 22:54:14,998 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:54:14,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:54:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash 268947104, now seen corresponding path program 1 times [2023-11-22 22:54:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:54:14,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755457856] [2023-11-22 22:54:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:54:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:54:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:54:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:54:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:54:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:54:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:54:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:54:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 22:54:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 22:54:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:54:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 22:54:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-22 22:54:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:54:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:54:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755457856] [2023-11-22 22:54:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755457856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:54:15,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:54:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:54:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830190259] [2023-11-22 22:54:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:54:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:54:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:54:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:54:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:54:15,187 INFO L87 Difference]: Start difference. First operand 20822 states and 34802 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:54:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:54:24,236 INFO L93 Difference]: Finished difference Result 45769 states and 79533 transitions. [2023-11-22 22:54:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:54:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2023-11-22 22:54:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:54:24,324 INFO L225 Difference]: With dead ends: 45769 [2023-11-22 22:54:24,325 INFO L226 Difference]: Without dead ends: 25344 [2023-11-22 22:54:24,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:54:24,394 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1453 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:54:24,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1395 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-22 22:54:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25344 states. [2023-11-22 22:54:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25344 to 20958. [2023-11-22 22:54:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20958 states, 16213 states have (on average 1.5799666933941898) internal successors, (25616), 16729 states have internal predecessors, (25616), 3655 states have call successors, (3655), 854 states have call predecessors, (3655), 1089 states have return successors, (5439), 3838 states have call predecessors, (5439), 3621 states have call successors, (5439) [2023-11-22 22:54:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20958 states to 20958 states and 34710 transitions. [2023-11-22 22:54:28,086 INFO L78 Accepts]: Start accepts. Automaton has 20958 states and 34710 transitions. Word has length 139 [2023-11-22 22:54:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:54:28,087 INFO L495 AbstractCegarLoop]: Abstraction has 20958 states and 34710 transitions. [2023-11-22 22:54:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:54:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 20958 states and 34710 transitions. [2023-11-22 22:54:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-22 22:54:28,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:54:28,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:54:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-22 22:54:28,090 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:54:28,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:54:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1632166792, now seen corresponding path program 1 times [2023-11-22 22:54:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:54:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162921235] [2023-11-22 22:54:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:54:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:54:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:54:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:54:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:54:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:54:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:54:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:54:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:54:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 22:54:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 22:54:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 22:54:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:54:28,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:54:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162921235] [2023-11-22 22:54:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162921235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:54:28,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:54:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 22:54:28,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852439487] [2023-11-22 22:54:28,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:54:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:54:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:54:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:54:28,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:54:28,326 INFO L87 Difference]: Start difference. First operand 20958 states and 34710 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 22:54:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:54:40,335 INFO L93 Difference]: Finished difference Result 42487 states and 72498 transitions. [2023-11-22 22:54:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 22:54:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 138 [2023-11-22 22:54:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:54:40,434 INFO L225 Difference]: With dead ends: 42487 [2023-11-22 22:54:40,434 INFO L226 Difference]: Without dead ends: 25704 [2023-11-22 22:54:40,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:54:40,493 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 3521 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3582 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 5222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-22 22:54:40,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3582 Valid, 1892 Invalid, 5222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 4284 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-22 22:54:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25704 states. [2023-11-22 22:54:44,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25704 to 21118. [2023-11-22 22:54:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21118 states, 16309 states have (on average 1.5765528235943345) internal successors, (25712), 16865 states have internal predecessors, (25712), 3695 states have call successors, (3695), 878 states have call predecessors, (3695), 1113 states have return successors, (5607), 3838 states have call predecessors, (5607), 3661 states have call successors, (5607) [2023-11-22 22:54:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21118 states to 21118 states and 35014 transitions. [2023-11-22 22:54:44,378 INFO L78 Accepts]: Start accepts. Automaton has 21118 states and 35014 transitions. Word has length 138 [2023-11-22 22:54:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:54:44,378 INFO L495 AbstractCegarLoop]: Abstraction has 21118 states and 35014 transitions. [2023-11-22 22:54:44,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 22:54:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 21118 states and 35014 transitions. [2023-11-22 22:54:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-22 22:54:44,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:54:44,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:54:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-22 22:54:44,382 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:54:44,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:54:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1456025574, now seen corresponding path program 1 times [2023-11-22 22:54:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:54:44,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751828267] [2023-11-22 22:54:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:54:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:54:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:54:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:54:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:54:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:54:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:54:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 22:54:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:54:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 22:54:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-22 22:54:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-22 22:54:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 22:54:44,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:54:44,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751828267] [2023-11-22 22:54:44,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751828267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:54:44,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:54:44,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 22:54:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622503835] [2023-11-22 22:54:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:54:44,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 22:54:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:54:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 22:54:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:54:44,694 INFO L87 Difference]: Start difference. First operand 21118 states and 35014 transitions. Second operand has 11 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-22 22:54:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:54:55,402 INFO L93 Difference]: Finished difference Result 47611 states and 80299 transitions. [2023-11-22 22:54:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 22:54:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2023-11-22 22:54:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:54:55,490 INFO L225 Difference]: With dead ends: 47611 [2023-11-22 22:54:55,490 INFO L226 Difference]: Without dead ends: 29576 [2023-11-22 22:54:55,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-22 22:54:55,547 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1849 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 7036 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 7457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 7036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-22 22:54:55,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 3523 Invalid, 7457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 7036 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-22 22:54:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29576 states. [2023-11-22 22:54:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29576 to 25238. [2023-11-22 22:54:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25238 states, 19797 states have (on average 1.5693286861645703) internal successors, (31068), 20445 states have internal predecessors, (31068), 4187 states have call successors, (4187), 926 states have call predecessors, (4187), 1253 states have return successors, (6099), 4330 states have call predecessors, (6099), 4153 states have call successors, (6099) [2023-11-22 22:54:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25238 states to 25238 states and 41354 transitions. [2023-11-22 22:54:59,660 INFO L78 Accepts]: Start accepts. Automaton has 25238 states and 41354 transitions. Word has length 141 [2023-11-22 22:54:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:54:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 25238 states and 41354 transitions. [2023-11-22 22:54:59,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-22 22:54:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 25238 states and 41354 transitions. [2023-11-22 22:54:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-22 22:54:59,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:54:59,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:54:59,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-22 22:54:59,664 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:54:59,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:54:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash 669951093, now seen corresponding path program 1 times [2023-11-22 22:54:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:54:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489627675] [2023-11-22 22:54:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:54:59,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:54:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:54:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:54:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:54:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:54:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:54:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:54:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:54:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:54:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:54:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 22:54:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 22:54:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 22:54:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:54:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 22:54:59,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:54:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489627675] [2023-11-22 22:54:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489627675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:54:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519821482] [2023-11-22 22:54:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:54:59,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:54:59,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:54:59,884 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:54:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 22:55:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:00,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:55:00,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:55:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 22:55:00,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:55:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519821482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:55:00,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:55:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-22 22:55:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023248864] [2023-11-22 22:55:00,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:55:00,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:55:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:55:00,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:55:00,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:55:00,163 INFO L87 Difference]: Start difference. First operand 25238 states and 41354 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:55:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:55:06,800 INFO L93 Difference]: Finished difference Result 58416 states and 96161 transitions. [2023-11-22 22:55:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:55:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2023-11-22 22:55:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:55:06,909 INFO L225 Difference]: With dead ends: 58416 [2023-11-22 22:55:06,910 INFO L226 Difference]: Without dead ends: 37777 [2023-11-22 22:55:06,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:55:06,979 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 904 mSDsluCounter, 5133 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 6875 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:55:06,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 6875 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 22:55:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37777 states. [2023-11-22 22:55:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37777 to 37622. [2023-11-22 22:55:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37622 states, 29565 states have (on average 1.5700321325892101) internal successors, (46418), 30491 states have internal predecessors, (46418), 6231 states have call successors, (6231), 1358 states have call predecessors, (6231), 1825 states have return successors, (9080), 6468 states have call predecessors, (9080), 6181 states have call successors, (9080) [2023-11-22 22:55:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37622 states to 37622 states and 61729 transitions. [2023-11-22 22:55:13,185 INFO L78 Accepts]: Start accepts. Automaton has 37622 states and 61729 transitions. Word has length 142 [2023-11-22 22:55:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:55:13,185 INFO L495 AbstractCegarLoop]: Abstraction has 37622 states and 61729 transitions. [2023-11-22 22:55:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:55:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 37622 states and 61729 transitions. [2023-11-22 22:55:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-22 22:55:13,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:55:13,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:55:13,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 22:55:13,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-22 22:55:13,401 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:55:13,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:55:13,401 INFO L85 PathProgramCache]: Analyzing trace with hash 243110833, now seen corresponding path program 1 times [2023-11-22 22:55:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:55:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160574077] [2023-11-22 22:55:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:55:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:55:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:55:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:55:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 22:55:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 22:55:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 22:55:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:55:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 22:55:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:55:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 22:55:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:55:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:55:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 22:55:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 22:55:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 22:55:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 22:55:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 22:55:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:55:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160574077] [2023-11-22 22:55:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160574077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:55:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422500646] [2023-11-22 22:55:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:55:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:55:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:55:13,610 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:55:13,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 22:55:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:55:13,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 22:55:13,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:55:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 22:55:13,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:55:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422500646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:55:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:55:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-22 22:55:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41321160] [2023-11-22 22:55:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:55:13,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:55:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:55:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:55:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:55:13,857 INFO L87 Difference]: Start difference. First operand 37622 states and 61729 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)