./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.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 b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 21:44:32,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 21:44:32,332 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 21:44:32,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 21:44:32,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 21:44:32,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 21:44:32,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 21:44:32,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 21:44:32,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 21:44:32,383 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 21:44:32,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 21:44:32,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 21:44:32,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 21:44:32,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 21:44:32,387 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 21:44:32,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 21:44:32,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 21:44:32,388 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 21:44:32,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 21:44:32,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 21:44:32,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 21:44:32,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 21:44:32,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 21:44:32,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 21:44:32,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 21:44:32,395 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 21:44:32,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 21:44:32,395 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 21:44:32,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 21:44:32,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 21:44:32,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 21:44:32,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 21:44:32,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:44:32,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 21:44:32,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 21:44:32,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 21:44:32,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 21:44:32,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 21:44:32,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 21:44:32,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 21:44:32,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 21:44:32,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 21:44:32,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 [2024-11-19 21:44:32,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 21:44:32,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 21:44:32,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 21:44:32,697 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 21:44:32,697 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 21:44:32,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2024-11-19 21:44:34,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 21:44:34,405 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 21:44:34,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2024-11-19 21:44:34,436 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0cc683b/100c659f119b45e7add5e698273eaf7b/FLAGa5313ba6f [2024-11-19 21:44:34,683 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0cc683b/100c659f119b45e7add5e698273eaf7b [2024-11-19 21:44:34,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 21:44:34,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 21:44:34,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 21:44:34,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 21:44:34,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 21:44:34,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:44:34" (1/1) ... [2024-11-19 21:44:34,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143c0516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:34, skipping insertion in model container [2024-11-19 21:44:34,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:44:34" (1/1) ... [2024-11-19 21:44:34,763 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 21:44:35,253 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c[62576,62589] [2024-11-19 21:44:35,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:44:35,293 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 21:44:35,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-11-19 21:44:35,303 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [151] [2024-11-19 21:44:35,303 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [818] [2024-11-19 21:44:35,304 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2396] [2024-11-19 21:44:35,304 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2762] [2024-11-19 21:44:35,304 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2780] [2024-11-19 21:44:35,304 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2818] [2024-11-19 21:44:35,305 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2827] [2024-11-19 21:44:35,305 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3175] [2024-11-19 21:44:35,305 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3293] [2024-11-19 21:44:35,390 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c[62576,62589] [2024-11-19 21:44:35,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:44:35,436 INFO L204 MainTranslator]: Completed translation [2024-11-19 21:44:35,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35 WrapperNode [2024-11-19 21:44:35,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 21:44:35,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 21:44:35,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 21:44:35,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 21:44:35,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,567 INFO L138 Inliner]: procedures = 94, calls = 352, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 1111 [2024-11-19 21:44:35,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 21:44:35,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 21:44:35,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 21:44:35,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 21:44:35,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,642 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-19 21:44:35,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 21:44:35,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 21:44:35,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 21:44:35,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 21:44:35,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (1/1) ... [2024-11-19 21:44:35,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:44:35,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:44:35,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 21:44:35,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 21:44:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 21:44:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-19 21:44:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-19 21:44:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-19 21:44:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-19 21:44:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-19 21:44:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-19 21:44:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-19 21:44:35,856 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-19 21:44:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-19 21:44:35,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-19 21:44:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-19 21:44:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-19 21:44:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-19 21:44:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-19 21:44:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-19 21:44:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-19 21:44:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-19 21:44:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-19 21:44:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-19 21:44:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-19 21:44:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-19 21:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-19 21:44:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-19 21:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-19 21:44:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-19 21:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-19 21:44:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-19 21:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-19 21:44:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-19 21:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-19 21:44:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-19 21:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-19 21:44:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-19 21:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-19 21:44:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-19 21:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-19 21:44:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-19 21:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-19 21:44:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-19 21:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-19 21:44:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-19 21:44:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-19 21:44:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-19 21:44:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-19 21:44:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 21:44:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 21:44:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 21:44:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 21:44:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-19 21:44:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-19 21:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-19 21:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-19 21:44:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-19 21:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-19 21:44:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-19 21:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-19 21:44:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 21:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 21:44:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-19 21:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-19 21:44:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-19 21:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-19 21:44:36,134 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 21:44:36,136 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 21:44:37,419 INFO L? ?]: Removed 461 outVars from TransFormulas that were not future-live. [2024-11-19 21:44:37,423 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 21:44:37,488 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 21:44:37,488 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 21:44:37,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:44:37 BoogieIcfgContainer [2024-11-19 21:44:37,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 21:44:37,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 21:44:37,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 21:44:37,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 21:44:37,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:44:34" (1/3) ... [2024-11-19 21:44:37,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2546ab43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:44:37, skipping insertion in model container [2024-11-19 21:44:37,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:44:35" (2/3) ... [2024-11-19 21:44:37,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2546ab43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:44:37, skipping insertion in model container [2024-11-19 21:44:37,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:44:37" (3/3) ... [2024-11-19 21:44:37,500 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2024-11-19 21:44:37,515 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 21:44:37,516 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 21:44:37,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 21:44:37,604 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f109f0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 21:44:37,605 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 21:44:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 457 states have (on average 1.6652078774617067) internal successors, (761), 477 states have internal predecessors, (761), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-19 21:44:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 21:44:37,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:44:37,627 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:44:37,627 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:44:37,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:44:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1557683510, now seen corresponding path program 1 times [2024-11-19 21:44:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:44:37,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031126843] [2024-11-19 21:44:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:44:37,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:44:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:44:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:44:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:44:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 21:44:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:44:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:44:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:44:38,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:44:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031126843] [2024-11-19 21:44:38,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031126843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:44:38,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:44:38,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 21:44:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404343849] [2024-11-19 21:44:38,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:44:38,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:44:38,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:44:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:44:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:44:39,015 INFO L87 Difference]: Start difference. First operand has 597 states, 457 states have (on average 1.6652078774617067) internal successors, (761), 477 states have internal predecessors, (761), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:44:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:44:46,612 INFO L93 Difference]: Finished difference Result 1466 states and 2507 transitions. [2024-11-19 21:44:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 21:44:46,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2024-11-19 21:44:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:44:46,650 INFO L225 Difference]: With dead ends: 1466 [2024-11-19 21:44:46,650 INFO L226 Difference]: Without dead ends: 873 [2024-11-19 21:44:46,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-19 21:44:46,661 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 902 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 5328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-19 21:44:46,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2433 Invalid, 5328 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [201 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-19 21:44:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-19 21:44:46,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 600. [2024-11-19 21:44:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 460 states have (on average 1.6565217391304348) internal successors, (762), 480 states have internal predecessors, (762), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2024-11-19 21:44:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 983 transitions. [2024-11-19 21:44:46,868 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 983 transitions. Word has length 67 [2024-11-19 21:44:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:44:46,869 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 983 transitions. [2024-11-19 21:44:46,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:44:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 983 transitions. [2024-11-19 21:44:46,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 21:44:46,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:44:46,874 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:44:46,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 21:44:46,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:44:46,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:44:46,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2086699580, now seen corresponding path program 1 times [2024-11-19 21:44:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:44:46,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626544439] [2024-11-19 21:44:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:44:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:44:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:44:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:44:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:44:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 21:44:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-19 21:44:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-19 21:44:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:44:47,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:44:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626544439] [2024-11-19 21:44:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626544439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:44:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:44:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 21:44:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773639716] [2024-11-19 21:44:47,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:44:47,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 21:44:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:44:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 21:44:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:44:47,565 INFO L87 Difference]: Start difference. First operand 600 states and 983 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:44:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:44:52,029 INFO L93 Difference]: Finished difference Result 1453 states and 2462 transitions. [2024-11-19 21:44:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 21:44:52,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-19 21:44:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:44:52,038 INFO L225 Difference]: With dead ends: 1453 [2024-11-19 21:44:52,038 INFO L226 Difference]: Without dead ends: 869 [2024-11-19 21:44:52,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 21:44:52,044 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 859 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-19 21:44:52,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1241 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-19 21:44:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-19 21:44:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 600. [2024-11-19 21:44:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 460 states have (on average 1.6543478260869566) internal successors, (761), 480 states have internal predecessors, (761), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2024-11-19 21:44:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 982 transitions. [2024-11-19 21:44:52,216 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 982 transitions. Word has length 68 [2024-11-19 21:44:52,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:44:52,217 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 982 transitions. [2024-11-19 21:44:52,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:44:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 982 transitions. [2024-11-19 21:44:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 21:44:52,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:44:52,223 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:44:52,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 21:44:52,223 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:44:52,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:44:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1243981530, now seen corresponding path program 1 times [2024-11-19 21:44:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:44:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689846867] [2024-11-19 21:44:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:44:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:44:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:44:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:44:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:44:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 21:44:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-19 21:44:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-19 21:44:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:44:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:44:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689846867] [2024-11-19 21:44:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689846867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:44:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:44:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 21:44:52,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481522828] [2024-11-19 21:44:52,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:44:52,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 21:44:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:44:52,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 21:44:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:44:52,790 INFO L87 Difference]: Start difference. First operand 600 states and 982 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:44:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:44:57,484 INFO L93 Difference]: Finished difference Result 1451 states and 2451 transitions. [2024-11-19 21:44:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 21:44:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-19 21:44:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:44:57,491 INFO L225 Difference]: With dead ends: 1451 [2024-11-19 21:44:57,491 INFO L226 Difference]: Without dead ends: 836 [2024-11-19 21:44:57,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:44:57,495 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 814 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-19 21:44:57,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1289 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-19 21:44:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-19 21:44:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 576. [2024-11-19 21:44:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 439 states have (on average 1.644646924829157) internal successors, (722), 457 states have internal predecessors, (722), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:44:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 939 transitions. [2024-11-19 21:44:57,606 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 939 transitions. Word has length 68 [2024-11-19 21:44:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:44:57,606 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 939 transitions. [2024-11-19 21:44:57,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:44:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 939 transitions. [2024-11-19 21:44:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 21:44:57,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:44:57,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:44:57,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 21:44:57,609 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:44:57,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:44:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1193676970, now seen corresponding path program 1 times [2024-11-19 21:44:57,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:44:57,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58771555] [2024-11-19 21:44:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:44:57,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:44:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:57,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:44:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:44:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:44:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:44:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-19 21:44:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 21:44:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-19 21:44:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:44:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:44:58,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:44:58,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58771555] [2024-11-19 21:44:58,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58771555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:44:58,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:44:58,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 21:44:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643776865] [2024-11-19 21:44:58,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:44:58,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:44:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:44:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:44:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:44:58,229 INFO L87 Difference]: Start difference. First operand 576 states and 939 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:03,633 INFO L93 Difference]: Finished difference Result 1414 states and 2382 transitions. [2024-11-19 21:45:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 21:45:03,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2024-11-19 21:45:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:03,640 INFO L225 Difference]: With dead ends: 1414 [2024-11-19 21:45:03,641 INFO L226 Difference]: Without dead ends: 830 [2024-11-19 21:45:03,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-19 21:45:03,644 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 857 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 4937 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 5140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 4937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:03,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 2279 Invalid, 5140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 4937 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-19 21:45:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-19 21:45:03,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 570. [2024-11-19 21:45:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 433 states have (on average 1.6374133949191685) internal successors, (709), 451 states have internal predecessors, (709), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 926 transitions. [2024-11-19 21:45:03,750 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 926 transitions. Word has length 69 [2024-11-19 21:45:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:03,750 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 926 transitions. [2024-11-19 21:45:03,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 926 transitions. [2024-11-19 21:45:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-19 21:45:03,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:03,752 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:03,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 21:45:03,752 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:03,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:03,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1694657580, now seen corresponding path program 1 times [2024-11-19 21:45:03,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:03,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334499741] [2024-11-19 21:45:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 21:45:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-19 21:45:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-19 21:45:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:04,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:04,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334499741] [2024-11-19 21:45:04,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334499741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:04,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:04,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 21:45:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647047002] [2024-11-19 21:45:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:04,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 21:45:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 21:45:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:45:04,307 INFO L87 Difference]: Start difference. First operand 570 states and 926 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:45:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:08,109 INFO L93 Difference]: Finished difference Result 1384 states and 2331 transitions. [2024-11-19 21:45:08,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 21:45:08,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2024-11-19 21:45:08,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:08,115 INFO L225 Difference]: With dead ends: 1384 [2024-11-19 21:45:08,115 INFO L226 Difference]: Without dead ends: 830 [2024-11-19 21:45:08,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 21:45:08,118 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 1409 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:08,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1222 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-19 21:45:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-19 21:45:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 570. [2024-11-19 21:45:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 433 states have (on average 1.6351039260969977) internal successors, (708), 451 states have internal predecessors, (708), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:08,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 925 transitions. [2024-11-19 21:45:08,212 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 925 transitions. Word has length 70 [2024-11-19 21:45:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:08,213 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 925 transitions. [2024-11-19 21:45:08,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:45:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 925 transitions. [2024-11-19 21:45:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 21:45:08,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:08,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:08,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 21:45:08,214 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:08,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash -254172621, now seen corresponding path program 1 times [2024-11-19 21:45:08,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:08,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523294492] [2024-11-19 21:45:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-19 21:45:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 21:45:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 21:45:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523294492] [2024-11-19 21:45:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523294492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:08,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:08,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 21:45:08,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327398829] [2024-11-19 21:45:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:08,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:45:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:45:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:45:08,779 INFO L87 Difference]: Start difference. First operand 570 states and 925 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:14,211 INFO L93 Difference]: Finished difference Result 1402 states and 2351 transitions. [2024-11-19 21:45:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 21:45:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2024-11-19 21:45:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:14,217 INFO L225 Difference]: With dead ends: 1402 [2024-11-19 21:45:14,217 INFO L226 Difference]: Without dead ends: 824 [2024-11-19 21:45:14,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-19 21:45:14,220 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 834 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 4834 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 5034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 4834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:14,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2315 Invalid, 5034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 4834 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-19 21:45:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-19 21:45:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 564. [2024-11-19 21:45:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 427 states have (on average 1.6276346604215457) internal successors, (695), 445 states have internal predecessors, (695), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 912 transitions. [2024-11-19 21:45:14,311 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 912 transitions. Word has length 71 [2024-11-19 21:45:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:14,312 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 912 transitions. [2024-11-19 21:45:14,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 912 transitions. [2024-11-19 21:45:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-19 21:45:14,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:14,313 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:14,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 21:45:14,314 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:14,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1913246893, now seen corresponding path program 1 times [2024-11-19 21:45:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:14,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059008519] [2024-11-19 21:45:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:14,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:45:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-19 21:45:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-19 21:45:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:14,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:14,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059008519] [2024-11-19 21:45:14,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059008519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:14,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:14,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 21:45:14,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075317677] [2024-11-19 21:45:14,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:14,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:45:14,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:45:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:45:14,928 INFO L87 Difference]: Start difference. First operand 564 states and 912 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:20,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:20,137 INFO L93 Difference]: Finished difference Result 1372 states and 2302 transitions. [2024-11-19 21:45:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 21:45:20,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2024-11-19 21:45:20,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:20,143 INFO L225 Difference]: With dead ends: 1372 [2024-11-19 21:45:20,143 INFO L226 Difference]: Without dead ends: 824 [2024-11-19 21:45:20,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-19 21:45:20,147 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 797 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 4755 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 4755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:20,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 2293 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 4755 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-19 21:45:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-19 21:45:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 564. [2024-11-19 21:45:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 427 states have (on average 1.6252927400468384) internal successors, (694), 445 states have internal predecessors, (694), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 911 transitions. [2024-11-19 21:45:20,244 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 911 transitions. Word has length 72 [2024-11-19 21:45:20,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:20,244 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 911 transitions. [2024-11-19 21:45:20,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 911 transitions. [2024-11-19 21:45:20,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-19 21:45:20,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:20,246 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:20,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 21:45:20,246 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:20,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1908678167, now seen corresponding path program 1 times [2024-11-19 21:45:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:20,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381588950] [2024-11-19 21:45:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:20,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-19 21:45:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-19 21:45:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 21:45:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:20,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381588950] [2024-11-19 21:45:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381588950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 21:45:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4761889] [2024-11-19 21:45:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:20,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:45:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:45:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:45:20,863 INFO L87 Difference]: Start difference. First operand 564 states and 911 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:26,075 INFO L93 Difference]: Finished difference Result 1390 states and 2320 transitions. [2024-11-19 21:45:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 21:45:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2024-11-19 21:45:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:26,081 INFO L225 Difference]: With dead ends: 1390 [2024-11-19 21:45:26,081 INFO L226 Difference]: Without dead ends: 818 [2024-11-19 21:45:26,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-19 21:45:26,084 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 1398 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 4630 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 5055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 4630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:26,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 2253 Invalid, 5055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 4630 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-19 21:45:26,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-11-19 21:45:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 558. [2024-11-19 21:45:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6175771971496438) internal successors, (681), 439 states have internal predecessors, (681), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 898 transitions. [2024-11-19 21:45:26,170 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 898 transitions. Word has length 73 [2024-11-19 21:45:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:26,171 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 898 transitions. [2024-11-19 21:45:26,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 898 transitions. [2024-11-19 21:45:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-19 21:45:26,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:26,174 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 21:45:26,174 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:26,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1586472138, now seen corresponding path program 1 times [2024-11-19 21:45:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:26,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247390738] [2024-11-19 21:45:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-19 21:45:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-19 21:45:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 21:45:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247390738] [2024-11-19 21:45:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247390738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 21:45:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041565454] [2024-11-19 21:45:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:26,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 21:45:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 21:45:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:45:26,682 INFO L87 Difference]: Start difference. First operand 558 states and 898 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:45:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:30,539 INFO L93 Difference]: Finished difference Result 1360 states and 2273 transitions. [2024-11-19 21:45:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 21:45:30,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-19 21:45:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:30,546 INFO L225 Difference]: With dead ends: 1360 [2024-11-19 21:45:30,546 INFO L226 Difference]: Without dead ends: 818 [2024-11-19 21:45:30,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 21:45:30,549 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 776 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:30,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1237 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-19 21:45:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-11-19 21:45:30,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 558. [2024-11-19 21:45:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6152019002375297) internal successors, (680), 439 states have internal predecessors, (680), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 897 transitions. [2024-11-19 21:45:30,673 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 897 transitions. Word has length 73 [2024-11-19 21:45:30,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:30,674 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 897 transitions. [2024-11-19 21:45:30,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 21:45:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 897 transitions. [2024-11-19 21:45:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-19 21:45:30,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:30,675 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:30,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 21:45:30,675 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:30,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1372247179, now seen corresponding path program 1 times [2024-11-19 21:45:30,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:30,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28367404] [2024-11-19 21:45:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:30,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-19 21:45:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-19 21:45:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-19 21:45:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28367404] [2024-11-19 21:45:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28367404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:31,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 21:45:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402294958] [2024-11-19 21:45:31,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:31,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:45:31,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:45:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:45:31,227 INFO L87 Difference]: Start difference. First operand 558 states and 897 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:36,329 INFO L93 Difference]: Finished difference Result 1372 states and 2282 transitions. [2024-11-19 21:45:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 21:45:36,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-11-19 21:45:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:36,334 INFO L225 Difference]: With dead ends: 1372 [2024-11-19 21:45:36,334 INFO L226 Difference]: Without dead ends: 818 [2024-11-19 21:45:36,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-19 21:45:36,337 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 785 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 4635 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 4835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 4635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:36,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2240 Invalid, 4835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 4635 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-19 21:45:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-11-19 21:45:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 558. [2024-11-19 21:45:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6128266033254157) internal successors, (679), 439 states have internal predecessors, (679), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 896 transitions. [2024-11-19 21:45:36,434 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 896 transitions. Word has length 74 [2024-11-19 21:45:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:36,434 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 896 transitions. [2024-11-19 21:45:36,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 896 transitions. [2024-11-19 21:45:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-19 21:45:36,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:36,436 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:36,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 21:45:36,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:36,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1857495582, now seen corresponding path program 1 times [2024-11-19 21:45:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264126490] [2024-11-19 21:45:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:36,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:36,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:36,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:36,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:36,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:37,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-19 21:45:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:37,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-19 21:45:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:37,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 21:45:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:37,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:37,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264126490] [2024-11-19 21:45:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264126490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:37,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:37,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 21:45:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077256451] [2024-11-19 21:45:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:37,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:45:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:45:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:45:37,014 INFO L87 Difference]: Start difference. First operand 558 states and 896 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:41,788 INFO L93 Difference]: Finished difference Result 1355 states and 2262 transitions. [2024-11-19 21:45:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 21:45:41,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-19 21:45:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:41,793 INFO L225 Difference]: With dead ends: 1355 [2024-11-19 21:45:41,793 INFO L226 Difference]: Without dead ends: 813 [2024-11-19 21:45:41,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-19 21:45:41,796 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 768 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 4766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:41,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2194 Invalid, 4766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-19 21:45:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-19 21:45:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 558. [2024-11-19 21:45:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6104513064133017) internal successors, (678), 439 states have internal predecessors, (678), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-19 21:45:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 895 transitions. [2024-11-19 21:45:41,898 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 895 transitions. Word has length 75 [2024-11-19 21:45:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:41,898 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 895 transitions. [2024-11-19 21:45:41,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 895 transitions. [2024-11-19 21:45:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-19 21:45:41,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:41,900 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:41,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 21:45:41,901 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:41,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash -592104548, now seen corresponding path program 1 times [2024-11-19 21:45:41,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:41,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772054213] [2024-11-19 21:45:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:41,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-19 21:45:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-19 21:45:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 21:45:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:45:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772054213] [2024-11-19 21:45:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772054213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:42,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:45:42,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 21:45:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650369778] [2024-11-19 21:45:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:42,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 21:45:42,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 21:45:42,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 21:45:42,436 INFO L87 Difference]: Start difference. First operand 558 states and 895 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 21:45:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:49,757 INFO L93 Difference]: Finished difference Result 2093 states and 3536 transitions. [2024-11-19 21:45:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 21:45:49,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-11-19 21:45:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:49,766 INFO L225 Difference]: With dead ends: 2093 [2024-11-19 21:45:49,766 INFO L226 Difference]: Without dead ends: 1553 [2024-11-19 21:45:49,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-19 21:45:49,768 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 2085 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 5050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:49,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2226 Valid, 1892 Invalid, 5050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-19 21:45:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-19 21:45:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1199. [2024-11-19 21:45:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 865 states have (on average 1.560693641618497) internal successors, (1350), 919 states have internal predecessors, (1350), 277 states have call successors, (277), 53 states have call predecessors, (277), 56 states have return successors, (355), 269 states have call predecessors, (355), 273 states have call successors, (355) [2024-11-19 21:45:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1982 transitions. [2024-11-19 21:45:50,084 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1982 transitions. Word has length 75 [2024-11-19 21:45:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:50,085 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1982 transitions. [2024-11-19 21:45:50,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 21:45:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1982 transitions. [2024-11-19 21:45:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-19 21:45:50,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:50,087 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:50,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 21:45:50,088 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:50,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash 800790684, now seen corresponding path program 1 times [2024-11-19 21:45:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:50,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147433284] [2024-11-19 21:45:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:50,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-19 21:45:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-19 21:45:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 21:45:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 21:45:50,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:50,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147433284] [2024-11-19 21:45:50,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147433284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:45:50,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35891790] [2024-11-19 21:45:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:50,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:45:50,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:45:50,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:45:50,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 21:45:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:50,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 21:45:50,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:45:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:45:51,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:45:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35891790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:51,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 21:45:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2024-11-19 21:45:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001664090] [2024-11-19 21:45:51,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:51,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 21:45:51,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 21:45:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 21:45:51,055 INFO L87 Difference]: Start difference. First operand 1199 states and 1982 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:45:51,507 INFO L93 Difference]: Finished difference Result 3469 states and 5824 transitions. [2024-11-19 21:45:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 21:45:51,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-19 21:45:51,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:45:51,527 INFO L225 Difference]: With dead ends: 3469 [2024-11-19 21:45:51,527 INFO L226 Difference]: Without dead ends: 2288 [2024-11-19 21:45:51,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 21:45:51,567 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 858 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:45:51,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2301 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:45:51,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2024-11-19 21:45:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2227. [2024-11-19 21:45:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1608 states have (on average 1.5752487562189055) internal successors, (2533), 1716 states have internal predecessors, (2533), 511 states have call successors, (511), 96 states have call predecessors, (511), 107 states have return successors, (680), 500 states have call predecessors, (680), 507 states have call successors, (680) [2024-11-19 21:45:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3724 transitions. [2024-11-19 21:45:52,073 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3724 transitions. Word has length 75 [2024-11-19 21:45:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:45:52,074 INFO L471 AbstractCegarLoop]: Abstraction has 2227 states and 3724 transitions. [2024-11-19 21:45:52,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 21:45:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3724 transitions. [2024-11-19 21:45:52,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 21:45:52,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:45:52,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:45:52,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 21:45:52,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 21:45:52,279 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:45:52,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:45:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash -524089649, now seen corresponding path program 1 times [2024-11-19 21:45:52,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:45:52,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980248090] [2024-11-19 21:45:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:45:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 21:45:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 21:45:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-19 21:45:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-19 21:45:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-19 21:45:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-19 21:45:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 21:45:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:45:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980248090] [2024-11-19 21:45:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980248090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:45:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418801670] [2024-11-19 21:45:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:45:52,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:45:52,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:45:52,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:45:52,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 21:45:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:45:53,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 21:45:53,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:45:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:45:53,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:45:53,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418801670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:45:53,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 21:45:53,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2024-11-19 21:45:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138081996] [2024-11-19 21:45:53,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:45:53,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 21:45:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:45:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 21:45:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 21:45:53,140 INFO L87 Difference]: Start difference. First operand 2227 states and 3724 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)